October 30, 2013																																																							Final AEGLs

 Page 1 of 60

Final AEGLs (131)

 Magnesium aluminum phosphide (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 1.3 1.3 0.67 0.17 0.080 

AEGL 3 2.4 2.4 1.2 0.30 0.15 

NR = Not recommended due to insufficient data 

57-14-7 1,1- Dimethyl hydrazine (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 18 6.0 3.0 0.75 0.38 

AEGL 3 65 22 11 2.7 1.4 

NR = Not recommended due to insufficient data 

60-34-4 Methyl hydrazine (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 5.3 1.8 0.90 0.23 0.11 

AEGL 3 16 5.5 2.7 0.68 0.34 

NR = Not recommended due to insufficient data 

62-53-3 Aniline (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 48 16 8.0 2.0 1.0 

AEGL 2 72 24 12 3.0 1.5 

AEGL 3 120 40 20 5.0 2.5 
October 30, 2013																																																							Final AEGLs

 Page 2 of 60

67-66-3 Chloroform (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 120 80 64 40 29 

AEGL 3 4,000 4,000 3,200 2,000 1,600 

NR = Not recommended due to insufficient data 

68-12-2 N,N-Dimethylformamide (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 110 110 91 57 38 

AEGL 3 970 670 530 280 140 

NR = Not recommended due to insufficient data 

74-83-9 Methyl bromide (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 940 380 210 67 67 

AEGL 3 3,300 1,300 740 230 130 

NR = Not Recommended due to insufficient data 

74-87-3 Methyl chloride (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 1,100 1,100 910 570 380 

AEGL 3 3,800 3,800 3,000 1,900 1,300 

NR = Not Recommended due to insufficient data 

74-90-8 Hydrogen cyanide (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 2.5 2.5 2.0 1.3 1.0 

AEGL 2 17 10 7.1 3.5 2.5 

AEGL 3 27 21 15 8.6 6.6 
October 30, 2013																																																							Final AEGLs

 Page 3 of 60

74-93-1 Methyl mercaptan (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 40 29 23 14 7.3 

AEGL 3 120 86 68 43 22 

NR = Not recommended due to insufficient data 

Level of Distinct Odor Awareness (LOA)= 0.019 ppm 

74-98-6 Propane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 10,000* 6,900* 5,500* 5,500* 5,500* 

AEGL 2 **see below **see below **see below **see below **see below 

AEGL 3 ***see below ***see below ***see below ***see below ***see below 

Lower Explosive Limit (LEL) = 23,000 ppm 

* = ≥ 10% LEL; ** = ≥ 50% LEL; *** = ≥ 100% LEL 

AEGL 2 - 10 min/30 min/60 min/4 hr/8 hr = ** 17,000 ppm 

AEGL 3 - 10 min/30 min/60 min/4 hr/8 hr = *** 33,000 ppm 

For values denoted as * safety considerations against the hazard(s) of explosion(s) must be taken into account. 

For values denoted as ** & *** extreme safety considerations against the hazard(s) of explosion(s) must be taken into 

account

75-01-4 Vinyl chloride (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 450 310 250 140 70 

AEGL 2 2,800 1,600 1,200 820 820 

AEGL 3 12,000* 6,800* 4,800* 3,400 3,400 

Lower Explosive Limit (LEL) = 38,000 ppm to 293,000 ppm; * = ≥10% LEL 

For values denoted as * safety considerations against the hazard(s) of explosion(s) must be taken into account. 

75-08-1 Ethyl mercaptan (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 1.0 1.0 1.0 1.0 1.0 

AEGL 2 150 150 120 77 37 

AEGL 3 450 450 360 230 110 

Level of Distinct Odor Awareness (LOA)= 0.00014 ppm 
October 30, 2013																																																							Final AEGLs

 Page 4 of 60

75-15-0 Carbon disulfide (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 17 17 13 8.4 6.7 

AEGL 2 200 200 160 100 50 

AEGL 3 600 600 480 300 150 

75-21-8 Ethylene oxide (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 80 80 45 14 7.9 

AEGL 3 360 360 200 63 35 

NR = Not recommended due to insufficient data 

75-44-5 *Phosgene (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.60 0.60 0.30 0.080 0.040 

AEGL 3 3.6 1.5 0.75 0.20 0.090 

NR = Not recommended due to insufficient data 

* Final AEGL values as published by NRC Vol 2 (2002). Phosgene was re-reviewed by the National Advisory 

Committee on Sept 9, 2009 (http://www.epa.gov/oppt/aegl/pubs/nac_49minutes_final.pdf) and changes have not 

been finalized by the National Academies. Thus, final AEGL values as published in NRC Vol 2 (2002) take 

precedence. 

75-54-7 Methyl dichlorosilane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.90 0.90 0.90 0.90 0.90 

AEGL 2 50 22 11 5.5 5.5 

AEGL 3 310 110 50 13 13 

75-55-8 Propylenimine (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 83 25 12 2.5 1.2 

AEGL 3 170 50 23 5.1 2.4 

NR = Not recommended due to insufficient data 
October 30, 2013																																																							Final AEGLs

 Page 5 of 60

75-56-9 Propylene oxide (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 73 73 73 73 73 

AEGL 2 440 440 290 130 86 

AEGL 3 1300 1300 870 390 260 

Level of Distinct Odor Awareness = 21 ppm 

75-77-4 Trimethyl chlorosilane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 1.8 1.8 1.8 1.8 1.8 

AEGL 2 100 43 22 11 11 

AEGL 3 620 210 100 26 26 

75-78-5 Dimethyl dichlorosilane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.90 0.90 0.90 0.90 0.90 

AEGL 2 50 22 11 5.5 5.5 

AEGL 3 310 110 50 13 13 

75-79-6 Methyl trichlorosilane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.60 0.60 0.60 0.60 0.60 

AEGL 2 33 14 7.3 3.7 3.7 

AEGL 3 210 70 33 8.7 8.7 

75-86-5 Acetone cyanohydrin (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 2.5 2.5 2.0 1.3 1.0 

AEGL 2 17 10 7.1 3.5 2.5 

AEGL 3 27 21 15 8.6 6.6 
October 30, 2013																																																							Final AEGLs

 Page 6 of 60

75-94-5 Vinyl trichlorosilane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.60 0.60 0.60 0.60 0.60 

AEGL 2 33 14 7.3 3.7 3.7 

 AEGL 3 210 70 33 8.7 8.7 

77-81-6 Agent GA (Tabun) (ppm) [mg/m3] 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.0010 

[0.0069] 

0.00060 

[0.0040] 

0.00042 

[0.0028] 

0.00021 

[0.0014] 

0.00015 

[0.0010] 

AEGL 2 0.013 [0.087] 0.0075 [0.050] 0.0053 [0.035] 0.0026 [0.017] 0.0020 [0.013] 

AEGL 3 0.11 [0.76] 0.057 [0.38] 0.039 [0.26] 0.021 [0.14] 0.015 [0.10] 

78-93-3 Methyl ethyl ketone (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 200 200 200 200 200 

AEGL 2 4,900* 3,400* 2,700* 1,700 1,700 

AEGL 3 **see below **see below 4,000* 2,500* 2,500* 

Lower Explosive Limit (LEL) = 18,000 ppm 

* = ≥10% LEL; ** = ≥50% LEL 

AEGL 3 - 10 min/30 min = ** 10,000 ppm 

For values denoted as * safety considerations against the hazard(s) of explosion(s) must be taken into account. 

For values denoted as ** extreme safety considerations against the hazard(s) of explosion(s) must be taken into account

78-95-5 Chloroacetone (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 8.0 5.5 4.4 1.1 0.53 

AEGL 3 24 17 13 3.3 1.6 

NR = Not recommended due to insufficient data 

79-11-8 Monochloroacetic acid (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 12 8.3 6.6 1.7 0.83 

AEGL 3 NR NR NR NR NR 
October 30, 2013																																																							Final AEGLs

 Page 7 of 60

79-21-0 Peracetic Acid (mg/m3) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.52 0.52 0.52 0.52 0.52 

AEGL 2 1.6 1.6 1.6 1.6 1.6 

AEGL 3 60 30 15 6.3 4.1 

80-10-4 Diphenyl dichlorosilane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.90 0.90 0.90 0.90 0.90 

AEGL 2 50 22 11 5.5 5.5 

 AEGL 3 310 110 50 13 13 

91-08-7 2,6-Toluenediisocyanate (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.020 0.020 0.020 0.010 0.010 

AEGL 2 0.24 0.17 0.083 0.021 0.021 

AEGL 3 0.65 0.65 0.51 0.32 0.16 

95-63-6 1,2,4-Trimethylbenzene (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 180 180 140 90 45 

AEGL 2 460 460 360 230 150 

AEGL 3 NR NR NR NR NR 

*NR = Not recommended due to lack of data 

96-64-0 Agent GD (Soman) (ppm) [mg/m3

] 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.00046 

[0.0035] 

0.00026 

[0.0020] 

0.00018 

[0.0014] 

0.000091 

[0.00070] 

0.000065 

[0.00050] 

AEGL 2 0.0057 [0.044] 0.0033 [0.025] 0.0022 [0.018] 0.0012 

[0.0085] 

0.00085 

[0.0065] 

AEGL 3 0.049 [0.38] 0.025 [0.19] 0.017 [0.13] 0.0091 [0.070] 0.0066 [0.051] 
October 30, 2013																																																							Final AEGLs

 Page 8 of 60

98-13-5 Trichlorophenysilane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.60 0.60 0.60 0.60 0.60 

AEGL 2 33 14 7.3 3.7 3.7 

 AEGL 3 210 70 33 8.7 8.7 

103-71-9 Phenyl isocyanate (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.012 0.012 0.0096 0.0061 0.0030 

 AEGL 3 0.036 0.036 0.029 0.018 0.0091 

106-97-8 Butane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 **see below 6,900* 5,500* 5,500* 5,500* 

AEGL 2 ***see below **see below **see below **see below **see below 

AEGL 3 ***see below ***see below ***see below ***see below ***see below 

Lower Explosive Limit (LEL) = 19,000 ppm 

* = ≥10% LEL; ** = ≥50% LEL; *** = ≥100% LEL 

AEGL 1 - 10 min = ** 10,000 ppm 

AEGL 2 - 10 min = *** 24,000 ppm; 30 min/ 60 min/ 4hr/ 8hr = ** 17,000 ppm 

AEGL 3 - 10 min = *** 77,000 ppm; 30 min/ 60 min/ 4hr/ 8hr = *** 53,000 ppm 

For values denoted as * safety considerations against the hazard(s) of explosion(s) must be taken into account. 

For values denoted as ** extreme safety considerations against the hazard(s) of explosion(s) must be taken into 

account 

107-02-8 Acrolein (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.030 0.030 0.030 0.030 0.030 

AEGL 2 0.44 0.18 0.10 0.10 0.10 

AEGL 3 6.2 2.5 1.4 0.48 0.27 
October 30, 2013																																																							Final AEGLs

 Page 9 of 60

107-11-9 Allyl Amine (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.42 0.42 0.42 0.42 0.42 

AEGL 2 3.3 3.3 3.3 1.8 1.2 

AEGL 3 150 40 18 3.5 2.3 

107-15-3 Ethylene diamine (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 12 12 9.7 6.1 4.8 

AEGL 3 25 25 20 13 10 

NR = Not recommended due to insufficient data 

107-19-7 Propargyl alcohol (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 2.5 2.5 2.5 2.5 2.5 

AEGL 2 20 20 16 10 6.6 

 AEGL 3 130 91 72 29 14 

107-20-0 Chloroacetaldehyde (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 2.3 2.3 1.3 0.40 0.22 

AEGL 2 9.8 3.9 2.2 0.69 0.39 

AEGL 3 44 18 9.9 3.1 1.8 

107-30-2 Chloromethyl methyl ether (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.60 0.60 0.47 0.30 0.22 

AEGL 3 2.6 2.6 2.0 1.3 0.93 

NR = Not recommended due to insufficient data 
October 30, 2013																																																							Final AEGLs

 Page 10 of 60

107-37-9 Allyl trichlorosilane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.60 0.60 0.60 0.60 0.60 

AEGL 2 33 14 7.3 3.7 3.7 

 AEGL 3 210 70 33 8.7 8.7 

107-44-8 Agent GB (Sarin) (ppm) [mg/m3] 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.0012 

[0.0069] 

0.00068 

[0.0040] 

0.00048 

[0.0028] 

0.00024 

[0.0014] 

0.00017 

[0.0010] 

AEGL 2 0.015 [0.087] 0.0085 [0.050] 0.0060 [0.035] 0.0029 [0.017] 0.0022 [0.013] 

AEGL 3 0.064 [0.38] 0.032 [0.19] 0.022 [0.13] 0.012 [0.070] 0.0087 [0.051] 

107-72-2 Amy ltrichlorosilane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.60 0.60 0.60 0.60 0.60 

AEGL 2 33 14 7.3 3.7 3.7 

 AEGL 3 210 70 33 8.7 8.7 

108-05-4 Vinyl acetate (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 6.7 6.7 6.7 6.7 6.7 

AEGL 2 46 46 36 23 15 

AEGL 3 230 230 180 110 75 

108-67-8 1,3,5-Trimethylbenzene (Mesitylene) (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 180 180 140 90 45 

AEGL 2 460 460 360 230 150 

AEGL 3 NR NR NR NR NR 

*NR = Not recommended due to lack of data 
October 30, 2013																																																							Final AEGLs

 Page 11 of 60

108-90-7 Chlorobenzene (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 10 10 10 10 10 

AEGL 2 430 300 150 150 150 

AEGL 3 1100 800 400 400 400 

108-91-8 Cyclohexylamine (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 1.8 1.8 1.8 1.8 1.8 

AEGL 2 11 11 8.6 5.4 2.7 

AEGL 3 38 38 30 19 9.5 

108-95-2 Phenol (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 19 19 15 9.5 6.3 

AEGL 2 29 29 23 15 12 

AEGL 3 NR NR NR NR NR 

NR = Not recommended due to insufficient data 

Level of Distinct Odor Awarenes (LOA) = 0.25 ppm 

108-98-5 Phenyl mercaptan (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 1.0 0.70 0.53 0.33 0.17 

AEGL 3 3.0 2.1 1.6 1.0 0.52 

*NR = Not recommended due to lack of data 

109-90-0 Ethyl isocyanate (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.20 0.065 0.034 0.0085 0.0040 

AEGL 3 0.60 0.20 0.10 0.025 0.013 

NR = Not recommended due to insufficient data 
October 30, 2013																																																							Final AEGLs

 Page 12 of 60

111-36-4 n-Butyl isocyanate (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.10 0.10 0.083 0.053 0.026 

AEGL 3 0.31 0.31 0.25 0.16 0.078 

110-00-9 Furan (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 12 8.5 6.8 1.7 0.85 

AEGL 3 35 24 19 4.8 2.4 

NR = Not recommended due to insufficient data 

110-54-3 Hexane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 *4,000 *2,900 *2,900 *2,900 *2,900 

AEGL 3 **see below ***see below ***see below ***see below ***see below 

NR = Not recommended due to insufficient data 

Lower Explosive Limit (LEL) = 11,000 ppm 

* The AEGL-2 values is higher than 10% of the lower explosive limit of n-hexane in air. Therefore, safely 

considerations against the hazard of explosion must be taken into account. 

** The 10-min AEGL-3 value of 12,000 ppm (42,000 mg/m3) is higher than the lower explosive limit of n-hexane 

in air. Therefore, extreme safety considerations against the hazard of explosion must be taken into account. 

*** The AEGL-3 values for the 30-min, 1-hr, 4-hr and 8-hr durations are each 8,600 ppm (30,000 mg/m3

) which 

is higher than 50% of the lower explosive limit of n-hexane in air. Therefore, extreme safety considerations 

against the hazard of explosion must be taken into account. 

110-89-4 Piperidine (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 10 10 6.6 2.6 1.7 

AEGL 2 50 50 33 13 8.3 

AEGL 3 370 180 110 45 28 

Level of Distinct Odor Awareness (LOA) = 5.8 ppm 
October 30, 2013																																																							Final AEGLs

 Page 13 of 60

112-04-9 Octadecyl trichlorosilane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.60 0.60 0.60 0.60 0.60 

AEGL 2 33 14 7.3 3.7 3.7 

 AEGL 3 210 70 33 8.7 8.7 

115-21-9 Ethyl trichlorosilane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.60 0.60 0.60 0.60 0.60 

AEGL 2 33 14 7.3 3.7 3.7 

AEGL 3 210 70 33 8.7 8.7 

123-73-9 trans-Crotonaldehyde (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.19 0.19 0.19 0.19 0.19 

AEGL 2 27 8.9 4.4 1.1 0.56 

AEGL 3 44 27 14 2.6 1.5 

124-63-0 Methanesulfonyl chloride (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.40 0.40 0.21 0.053 0.026 

AEGL 3 1.2 1.2 0.62 0.16 0.078 

NR = Not recommended due to insufficient data 

124-70-9 Methylvinyl dichlorosilane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.90 0.90 0.90 0.90 0.90 

AEGL 2 50 22 11 5.5 5.5 

AEGL 3 310 110 50 13 13 
October 30, 2013																																																							Final AEGLs

 Page 14 of 60

141-57-1 Propyl trichlorosilane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.60 0.60 0.60 0.60 0.60 

AEGL 2 33 14 7.3 3.7 3.7 

 AEGL 3 210 70 33 8.7 8.7 

141-59-3 t-Octyl mercaptan (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.77 0.77 0.60 0.40 0.19 

AEGL 3 2.3 2.3 1.8 1.2 0.58 

NR = Not recommended due to insufficient data 

151-56-4 Ethylenimine (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 33 9.8 4.6 1.0 0.47 

AEGL 3 51 19 9.9 2.8 1.5 

NR = Not recommended due to insufficient data 

Level of Distinct Odor Awareness = 11 ppm 

156-59-2 cis-1,2-Dichloroethylene (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 140 140 140 140 140 

AEGL 2 500 500 500 340 230 

AEGL 3 850 850 850 620 310 

156-60-5 cis- and trans-1,2-Dichloroethylene (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 280 280 280 280 280 

AEGL 2 1,000 1,000 1,000 690 450 

AEGL 3 1,700 1,700 1,700 1,200 620 
October 30, 2013																																																							Final AEGLs

 Page 15 of 60

302-01-2 Hydrazine (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.10 0.10 0.10 0.10 0.10 

AEGL 2 23 16 13 3.1 1.6 

AEGL 3 64 45 35 8.9 4.4 

329-99-7 GF Agent (ppm) [mg/m3

] 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.00049 

[0.0035] 

0.00028 

[0.0020] 

0.00020 

[0.0014] 

0.00010 

[0.00070] 

0.000070 

[0.00050] 

AEGL 2 0.0062 [0.044] 0.0035 [0.025] 0.0024 [0.018] 0.0013 

[0.0085] 

0.00091 

[0.0065] 

AEGL 3 0.053 [0.38] 0.027 [0.19] 0.018 [0.13] 0.0098 [0.070] 0.0071 [0.051] 

505-60-2 Sulfur Mustard (ppm)[mg/m3] 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.060 

[0.40] 

0.020 

[0.13] 

0.010 

[0.067] 

0.0030 

[0.017] 

0.0010 

[0.0083] 

AEGL 2 0.090 

[0.60] 

0.030 

[0.20] 

0.020 

[0.10] 

0.0040 

[0.025] 

0.0020 

[0.013] 

AEGL 3 0.59 

[3.9] 

0.41 

[2.7] 

0.32 

[2.1] 

0.080 

[0.53] 

0.040 

[0.27] 

509-14-8 Tetranitromethane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.66 0.66 0.52 0.33 0.17 

AEGL 3 2.2 2.2 1.7 1.1 0.55 

NR = Not recommended due to insufficient data 
October 30, 2013																																																							Final AEGLs

 Page 16 of 60

526-73-8 1,2,3-Trimethylbenzene (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 180 180 140 90 45 

AEGL 2 460 460 360 230 150 

AEGL 3 NR NR NR NR NR 

*NR = Not recommended due to lack of data 

540-73-8 1,2-Dimethyl hydrazine (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 18 6.0 3.0 0.75 0.38 

AEGL 3 65 22 11 2.7 1.4 

NR = Not recommended due to insufficient data 

541-25-3 Lewisite 1 (mg/m3) (including mixtures with Lewisite 2 CAS #40334-69-8 and Lewisite 3 

CAS #40334-70-1) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 1.3 0.47 0.25 0.070 0.037 

AEGL 3 3.9 1.4 0.74 0.21 0.11 

NR = Not recommended due to insufficient data 

542-88-1 Bis-chloromethyl ether (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.055 0.055 0.044 0.028 0.020 

AEGL 3 0.23 0.23 0.18 0.11 0.075 

NR = Not recommended due to insufficient data 

556-61-6 Methyl isothiocyanate (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.27 0.27 0.27 0.27 0.27 

AEGL 2 21 21 17 10 5.3 

AEGL 3 63 63 50 31 16 
October 30, 2013																																																							Final AEGLs

 Page 17 of 60

584-84-9 2,4-Toluene Diisocyanate (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.020 0.020 0.020 0.010 0.010 

AEGL 2 0.24 0.17 0.083 0.021 0.021 

AEGL 3 0.65 0.65 0.51 0.32 0.16 

594-42-3 Perchloromethyl mercaptan (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.013 0.013 0.013 0.013 0.013 

AEGL 2 0.53 0.37 0.30 0.077 0.037 

AEGL 3 1.6 1.1 0.90 0.23 0.11 

Level of Distinct Odor Awareness = 0.016 ppm 

598-31-2 Bromoacetone (ppm) 9/21/09 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.011 0.011 0.011 0.011 0.011

AEGL 2 1.4 0.57 0.33 0.11 0.063 

AEGL 3 4.1 1.7 0.98 0.32 0.19 

624-83-9 Methyl isocyanate (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.40 0.13 0.067 0.017 0.0080 

AEGL 3 1.2 0.40 0.20 0.05 0.025 

NR = Not recommended since AEGL-1 irritation levels would exceed AEGL-2 

630-08-0 Carbon monoxide (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 420 150 83 33 27 

AEGL 3 1,700 600 330 150 130 

NR = Not recommended due to insufficient data 
October 30, 2013																																																							Final AEGLs

 Page 18 of 60

681-84-5 Tetramethoxy silane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 1.1 1.1 0.91 0.57 0.38 

AEGL 3 1.7 1.7 1.4 0.87 0.43 

NR = Not recommended due to insufficient data 

684-16-2 Hexafluoroacetone (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.40 0.40 0.20 0.050 0.025 

AEGL 3 160 160 80 20 10 

NR = Not recommended due to insufficient data 

811-97-2 HFC 134A (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 8,000 8,000 8,000 8,000 8,000 

AEGL 2 13,000 13,000 13,000 13,000 13,000 

AEGL 3 27,000 27,000 27,000 27,000 27,000 

928-65-4 Hexyltrichlorosilane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.60 0.60 0.60 0.60 0.60 

AEGL 2 33 14 7.3 3.7 3.7 

AEGL 3 210 70 33 8.7 8.7 

993-00-0 Methyl chlorosilane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 1.8 1.8 1.8 1.8 1.8 

AEGL 2 100 43 22 11 11 

AEGL 3 620 210 100 26 26 
October 30, 2013																																																							Final AEGLs

 Page 19 of 60

1066-35-9 Dimethyl chlorosilane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 1.8 1.8 1.8 1.8 1.8 

AEGL 2 100 43 22 11 11 

AEGL 3 620 210 100 26 26 

1305-99-3 Calcium phosphide (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 2.0 2.0 1.0 0.25 0.13 

AEGL 3 3.6 3.6 1.8 0.45 0.23 

NR = Not recommended due to insufficient data 

1314-84-7 Zinc phosphide (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 2.0 2.0 1.0 0.25 0.13 

AEGL 3 3.6 3.6 1.8 0.45 0.23 

NR = Not recommended due to insufficient data 

1330-20-7 Xylenes (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 130 130 130 130 130 

AEGL 2 2,500* 1,300* 920* 500 400 

AEGL 3 ** see below 3,600* 2,500* 1,300* 1,000* 

Lower Explosion Limit (LEL) = 9,000 ppm 

* ≥ 10% LEL; ** ≥ 50% LEL 

AEGL 3 - 10 min = ** 7,200 ppm 

For values denoted as * safety considerations against the hazard(s) of explosion(s) must be taken into account. 

For value denoted as ** extreme safety considerations against the hazard(s) of explosion(s) must be taken into account 
October 30, 2013																																																							Final AEGLs

 Page 20 of 60

1498-51-7 Ethylphosphorodichloridate (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.37 0.25 0.20 0.13 0.063 

 AEGL 3 1.1 0.76 0.60 0.38 0.19 

1558-25-4 Chloromethyl trichlorosilane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.60 0.60 0.60 0.60 0.60 

AEGL 2 33 14 7.3 3.7 3.7 

AEGL 3 210 70 33 8.7 8.7 

1717-00-6 HCFC 141b (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 1,000 1,000 1,000 1,000 1,000 

AEGL 2 1,700 1,700 1,700 1,700 1,700 

AEGL 3 3,000 3,000 3,000 3,000 3,000 

1719-53-5 Diethyl dichlorosilane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.90 0.90 0.90 0.90 0.90 

AEGL 2 50 22 11 5.5 5.5 

 AEGL 3 310 110 50 13 13 

2487-90-3 Trimethoxysilane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 2.9 1.4 0.83 0.33 0.20 

AEGL 3 8.8 4.1 2.5 0.98 0.61 

NR = Not recommended due to insufficient data 
October 30, 2013																																																							Final AEGLs

 Page 21 of 60

3173-53-3 Cyclohexyl isocyanate (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.20 0.065 0.034 0.0085 0.0040 

AEGL 3 0.60 0.20 0.10 0.025 0.013 

NR = Not recommended due to insufficient data 

4109-96-0 Dichlorosilane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.90 0.90 0.90 0.90 0.90 

AEGL 2 50 22 11 5.5 5.5 

AEGL 3 310 110 50 13 13 

4170-30-3 cis-Crotonaldehyde (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.19 0.19 0.19 0.19 0.19 

AEGL 2 27 8.9 4.4 1.1 0.56 

AEGL 3 44 27 14 2.6 1.5 

4484-72-4 Dodecyl trichlorosilane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.60 0.60 0.60 0.60 0.60 

AEGL 2 33 14 7.3 3.7 3.7 

AEGL 3 210 70 33 8.7 8.7 

5283-66-9 Octyl trichlorosilane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.60 0.60 0.60 0.60 0.60 

AEGL 2 33 14 7.3 3.7 3.7 

AEGL 3 210 70 33 8.7 8.7 
October 30, 2013																																																							Final AEGLs

 Page 22 of 60

5283-67-0 Nonyl trichlorosilane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.60 0.60 0.60 0.60 0.60 

AEGL 2 33 14 7.3 3.7 3.7 

AEGL 3 210 70 33 8.7 8.7 

6423-43-4 Propylene Glycol Dinitrate (main component of Otto Fuel 106602-80-6) (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.33 0.33 0.17 0.050 0.030 

AEGL 2 2.0 2.0 1.0 0.25 0.13 

AEGL 3 16 16 13 8.0 5.3 

6581-06-2 BZ (mg/m3

) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.067 0.022 0.011 NR NR 

AEGL 3 1.2 0.41 0.21 NR NR 

7446-09-5 Sulfur Dioxide (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.20 0.20 0.20 0.20 0.20 

AEGL 2 0.75 0.75 0.75 0.75 0.75 

AEGL 3 30 30 30 19 9.6 

7521-80-4 Butyl trichlorosilane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.60 0.60 0.60 0.60 0.60 

AEGL 2 33 14 7.3 3.7 3.7 

AEGL 3 210 70 33 8.7 8.7 
October 30, 2013																																																							Final AEGLs

 Page 23 of 60

7616-94-6 Perchloryl fluoride (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 1.8 1.8 1.5 0.92 0.60 

AEGL 2 5.0 5.0 4.0 2.5 1.2 

AEGL 3 15 15 12 7.5 3.7 

7637-07-2 Boron trifluoride (mg/m3) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 2.5 2.5 2.5 2.5 2.5 

AEGL 2 37 37 29 18 9.3 

AEGL 3 110 110 88 55 28 

7647-01-0 Hydrogen chloride (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 1.8 1.8 1.8 1.8 1.8 

AEGL 2 100 43 22 11 11 

AEGL 3 620 210 100 26 26 

7664-39-3 Hydrogen fluoride (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 1.0 1.0 1.0 1.0 1.0 

AEGL 2 95 34 24 12 12 

AEGL 3 170 62 44 22 22 

7664-41-7 Ammonia (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 30 30 30 30 30 

AEGL 2 220 220 160 110 110 

AEGL 3 2,700 1,600 1,100 550 390 
October 30, 2013																																																							Final AEGLs

 Page 24 of 60

7697-37-2 Nitric Acid (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.16 0.16 0.16 0.16 0.16 

AEGL 2 43 30 24 6.0 3.0 

AEGL 3 170 120 92 23 11 

7719-12-2 Phosphorus Trichloride (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.34 0.34 0.34 0.34 0.34 

AEGL 2 2.5 2.5 2.0 1.3 0.83 

AEGL 3 7.0 7.0 5.6 3.5 1.8 

7726-95-6 Bromine (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.033 0.033 0.033 0.033 0.033 

AEGL 2 0.55 0.33 0.24 0.13 0.095 

AEGL 3 19 12 8.5 4.5 3.3 

7782-41-4 Fluorine (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 1.7 1.7 1.7 1.7 1.7 

AEGL 2 20 11 5.0 2.3 2.3 

AEGL 3 36 19 13 5.7 5.7 

7782-50-5 Chlorine (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.50 0.50 0.50 0.50 0.50 

AEGL 2 2.8 2.8 2.0 1.0 0.71 

AEGL 3 50 28 20 10 7.1 
October 30, 2013																																																							Final AEGLs

 Page 25 of 60

7783-06-4 Hydrogen sulfide (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.75 0.60 0.51 0.36 0.33 

AEGL 2 41 32 27 20 17 

AEGL 3 76 59 50 37 31 

Level of Distinct Odor Awareness = 0.01 ppm 

7783-81-5 Uranium hexafluoride (mg/m3

) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 3.6 3.6 3.6 NR NR 

AEGL 2 28 19 9.6 2.4 1.2 

AEGL 3 216 72 36 9.0 4.5 

7784-42-1 Arsine (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.30 0.21 0.17 0.040 0.020 

AEGL 3 0.91 0.63 0.50 0.13 0.060 

NR = Not recommended since AEGL-2 concentrations are below sensory effect concentrations. 

7790-91-2 Chlorine trifluoride (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.12 0.12 0.12 0.12 0.12 

AEGL 2 8.1 3.5 2.0 0.70 0.41 

AEGL 3 84 36 21 7.3 7.3 

7791-25-5 Sulfuryl chloride (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 4.7 4.7 3.7 2.3 1.2 

AEGL 3 14 14 11 7.0 3.5 

NR = Not recommended due to insufficient data 
October 30, 2013																																																							Final AEGLs

 Page 26 of 60

7803-51-2 Phosphine (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 4.0 4.0 2.0 0.50 0.25 

AEGL 3 7.2 7.2 3.6 0.90 0.45 

NR = Not recommended due to insufficient data 

10025-78-2 Trichlorosilane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.60 0.60 0.60 0.60 0.60 

AEGL 2 33 14 7.3 3.7 3.7 

AEGL 3 210 70 33 8.7 8.7 

10025-87-3 Phosphorus oxychloride (ppm)

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 NR NR NR NR NR 

AEGL 3 1.1 1.1 0.85 0.54 0.27 

NR = Not recommended due to insufficient data 

10026-04-7 Tetrachlorosilane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.45 0.45 0.45 0.45 0.45 

AEGL 2 25 11 5.5 2.8 2.8 

AEGL 3 160 53 25 6.5 6.5 

10049-04-4 Chlorine dioxide (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.15 0.15 0.15 0.15 0.15 

AEGL 2 1.4 1.4 1.1 0.69 0.45 

AEGL 3 3.0 3.0 2.4 1.5 0.98 
October 30, 2013																																																							Final AEGLs

 Page 27 of 60

10102-43-9 * Nitric oxide (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 NR NR NR NR NR 

AEGL 3 NR NR NR NR NR 

NR = Not recommended; AEGL values for nitrogen dioxide should be used for emergency planning; Short-term 

exposures below 80 ppm NO should not constitute a health hazard 

10102-44-0 * Nitrogen dioxide (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.50 0.50 0.50 0.50 0.50 

AEGL 2 20 15 12 8.2 6.7 

AEGL 3 34 25 20 14 11 

* Some effects may be delayed 

10544-72-6 Nitrogen Tetroxide ppm (mg/m3) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.25 (0.94) 0.25 (0.94) 0.25 (0.94) 0.25 (0.94) 0.25 (0.94) 

AEGL 2 10 (38) 7.6 (28) 6.2 (23) 4.1 (15) 3.5 (13) 

AEGL 3 17 (64) 13 (47) 10 (38) 7.0 (26) 5.7 (21) 

12057-74-8 Magnesium phosphide (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 2.0 2.0 1.0 0.25 0.13 

AEGL 3 3.6 3.6 1.8 0.45 0.23 

NR = Not recommended due to insufficient data 
October 30, 2013																																																							Final AEGLs

 Page 28 of 60

12058-85-4 Sodium phosphide (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 4.0 4.0 2.0 0.50 0.25 

AEGL 3 7.2 7.2 3.6 0.90 0.45 

NR = Not recommended due to insufficient data 

12504-13-1 Strontium phosphide (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 2.0 2.0 1.0 0.25 0.13 

AEGL 3 3.6 3.6 1.8 0.45 0.23 

NR = Not recommended due to insufficient data 

13463-39-3 Nickel carbonyl (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.10 0.072 0.036 0.0090 0.0045 

AEGL 3 0.46 0.32 0.16 0.040 0.020 

NR = Not recommended due insufficient data 

13463-40-6 Iron pentacarbonyl (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.077 0.077 0.060 0.037 0.025 

AEGL 3 0.23 0.23 0.18 0.11 0.075 

NR = Not recommended due to lack of data 

19287-45-7 Diborane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 2.0 2.0 1.0 0.25 0.13 

AEGL 3 7.3 7.3 3.7 0.92 0.46 

NR = Not recommended due to insufficient data 
October 30, 2013																																																							Final AEGLs

 Page 29 of 60

20770-41-6 Potassium phosphide (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 4.0 4.0 2.0 0.50 0.25 

AEGL 3 7.2 7.2 3.6 0.90 0.45 

NR = Not recommended due to insufficient data 

20859-73-8 Aluminum phosphide (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 4.0 4.0 2.0 0.50 0.25 

AEGL 3 7.2 7.2 3.6 0.90 0.45 

NR = Not recommended due to insufficient data 

27137-85-5 Trichlorophenylsilane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.60 0.60 0.60 0.60 0.60 

AEGL 2 33 14 7.3 3.7 3.7 

AEGL 3 210 70 33 8.7 8.7 

50782-69-9 Agent VX (ppm)[mg/m3] 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.000052 

[0.00057] 

0.000030 

[0.00033] 

0.000016 

[0.00017] 

0.0000091 

[0.00010] 

0.0000065 

[0.000071] 

AEGL 2 0.00065 

[0.0072] 

0.00038 

[0.0042] 

0.00027 

[0.0029] 

0.00014 

[0.0015] 

0.000095 

[0.0010] 

AEGL 3 0.0027 

[0.029] 

0.0014 

[0.015] 

0.00091 

[0.010] 

0.00048 

[0.0052] 

0.00035 

[0.0038] 

70892-10-3 and 8008-20-6 Jet Fuels (JP-5 and JP-8) (mg/m3) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 290 290 290 290 290 

AEGL 2 1,100 1,100 1,100 1,100 1,100 

AEGL 3 NR NR NR NR NR 

NR = Not recommended due to insufficient data 
October 30, 2013																																																							Final AEGLs

 Page 30 of 60

163702-07-6 and 163702-08-7 (HFE-7100) Methyl nonafluorobutyl ether (40%) and Methyl 

nonafluoroisobutyl ether (60%) (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 2,500 2,500 2,500 2,500 2,500 

AEGL 2 8,200 8,200 8,200 8,200 8,200 

AEGL 3 15,000 15,000 15,000 15,000 15,000 
October 30, 2013																																																									Interim AEGLs

 Page 31 of 60

Interim AEGLs (130)

Interim AEGLs are established following review and consideration of public comments by the National Advisory 

Committee for AEGLs (NAC/AEGL) of public comments on Proposed AEGLs that are published in the Federal 

Register. Interim AEGLs are available for use by organizations while awaiting NRC/NAS peer review and 

publication of Final AEGLs. (Dates) in parentheses refer to date of the NAC meeting when the decision was made 

to raise Proposed AEGLs to Interim status. 

50-00-0 Formaldehyde (ppm) 12/12/06 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.90 0.90 0.90 0.90 0.90 

AEGL 2 14 14 14 14 14 

AEGL 3 100 70 56 35 35 

51-75-2 Nitrogen Mustard-2 (mg/m3

) 10/19/2007 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.13 0.044 0.022 0.0056 0.0028 

AEGL 3 2.2 0.74 0.37 0.093 0.047 

NR = Not recommended due to insufficient data 

56-23-5 Carbon tetrachloride (ppm) 9/13/01 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 58 58 44 25 19 

AEGL 2 380 250 190 100 81 

AEGL 3 1100 680 520 300 220 

56-38-2 Parathion (mg/m3) 9/21/09 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 2.8 1.9 1.5 0.96 0.48 

AEGL 3 3.6 2.5 2.0 1.3 0.63 

NR = Not recommended due to insufficient data 
October 30, 2013																																																									Interim AEGLs

 Page 32 of 60

67-56-1 Methanol (ppm) 4/20/04 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 670 670 530 340 270 

AEGL 2 11,000* 4,000 2,100 730 520 

AEGL 3 ** See below 14,000* 7,200* 2,400 1,600 

Lower Explosive Limit (LEL) = 55,000 ppm 

* = ≥10% LEL; ** = ≥50% LEL 

AEGL 3 - 10 min = ** 40,000 ppm 

For values denoted as * safety considerations against the hazard(s) of explosion(s) must be taken into account. 

For values denoted as ** extreme safety considerations against the hazard(s) of explosion(s) must be taken into account

Level of Distinct Odor Awarenes (LOA) = 8.9 ppm 

67-64-1 Acetone (ppm) 4/14/05 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 200 200 200 200 200 

AEGL 2 9,300* 4,900* 3,200* 1,400 950 

AEGL 3 **see below 8,600* 5,700* 2,500 1,700 

Lower Explosive Limit (LEL) = 26,000 ppm

* = ≥10% LEL; ** = ≥50% LEL 

AEGL 3 - 10 min = ** 16,000 ppm 

For values denoted as * safety considerations against the hazard(s) of explosion(s) must be taken into account. 

For values denoted as ** extreme safety considerations against the hazard(s) of explosion(s) must be taken into account

Level of Distinct Odor Awareness (LOA) = 160 ppm 

71-43-2 Benzene (ppm) 10/19/2007 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 130 73 52 18 9.0 

AEGL 2 2,000* 1,100 800 400 200 

AEGL 3 **see below 5,600* 4,000* 2,000* 990 

Lower Explosive Limit (LEL) = 14,000 ppm 

* = ≥10% LEL; ** = ≥ 50% LEL 

AEGL 3 - 10 min = ** 9,700 ppm 

For values denoted as * safety considerations against the hazard(s) of explosion(s) must be taken into account. 

For values denoted as ** extreme safety considerations against the hazard(s) of explosion(s) must be taken into account
October 30, 2013																																																									Interim AEGLs

 Page 33 of 60

71-55-6 1,1,1-Trichloroethane (ppm) 4/26/00 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 230 230 230 230 230 

AEGL 2 930 670 600 380 310 

AEGL 3 4,200 4,200 4,200 2,700 2,100 

74-89-5 Methyl amine (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 15 15 15 15 15 

AEGL 2 160 92 64 31 21 

AEGL 3 910 510 350 170 110 

Level of Distinct Odor Awareness = 0.56 ppm 

75-04-7 Ethylamine (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 7.5 7.5 7.5 7.5 7.5 

AEGL 2 150 76 49 22 14 

AEGL 3 810 420 270 120 76 

Level of Distinct Odor Awareness = 0.74 ppm 

75-05-8 Acetonitrile (ppm) 03/20/07 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 13 13 13 13 13 

AEGL 2 490 490 320 130 86 

AEGL 3 1000 1000 670 280 180 

75-07-0 Acetaldehyde (ppm) 11/13/06 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 45 45 45 45 45 

AEGL 2 340 340 270 170 110 

AEGL 3 1100 1100 840 530 260 

Level of Distinct Odor Awareness (LOA)= 0.56 ppm 
October 30, 2013																																																									Interim AEGLs

 Page 34 of 60

75-09-2 Methylene chloride (ppm) 11/13/06 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 290 230 200 NR NR 

AEGL 2 1700 1200 560 100 60 

AEGL 3 12,000 8,500 6,900 4,900 2,100 

75-50-3 Trimethyl amine (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 8.0 8.0 8.0 8.0 8.0 

AEGL 2 240 150 120 67 51 

AEGL 3 750 490 380 220 170 

Level of Distinct Odor Awareness = 0.00051 ppm 

76-06-2 Chloropicrin (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.050 0.050 0.050 0.050 0.050 

AEGL 2 0.15 0.15 0.15 0.15 0.15 

 AEGL 3 2.0 2.0 1.4 0.79 0.58 

77-78-1 Dimethyl sulfate (ppm) 11/13/06 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.035 0.035 0.024 0.012 0.0087 

AEGL 2 0.17 0.17 0.12 0.061 0.043 

AEGL 3 4.0 2.3 1.6 0.82 0.58 

78-82-0 Isobutyronitrile (ppm) 9/17/03 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 33 23 18 11 7.5 

AEGL 3 120 85 68 17 8.5 

NR = Not recommended due to insufficient data 
October 30, 2013																																																									Interim AEGLs

 Page 35 of 60

78-85-3 Methacrylaldehyde (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.20 0.20 0.20 0.20 0.20 

AEGL 2 3.5 3.5 2.8 1.8 1.1 

AEGL 3 5.9 5.9 4.7 2.9 1.9 

78-94-4 Methyl vinyl ketone (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.17 0.17 0.17 0.17 0.17 

AEGL 2 1.5 1.5 1.2 0.76 0.50 

AEGL 3 3.1 3.1 2.4 1.5 1.0 

79-01-6 Trichloroethylene (ppm) 12/13/04 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 260 180 130 84 77 

AEGL 2 960 620 450 270 240 

AEGL 3 6,100 6,100 3,800 1,500 970 

79-04-9 Chloroacetyl chloride (ppm) 11/13/06 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.040 0.040 0.040 0.040 0.040 

AEGL 2 2.9 2.0 1.6 0.40 0.20 

AEGL 3 95 66 52 13 6.5 

79-10-7 Acrylic acid (ppm) 12/10/03 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 1.5 1.5 1.5 1.5 1.5 

AEGL 2 68 68 46 21 14 

AEGL 3 480 260 180 85 58 

NR = Not recommended due to insufficient data 
October 30, 2013																																																									Interim AEGLs

 Page 36 of 60

79-22-1 Methyl chloroformate (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 4.0 2.8 2.2 1.4 0.70 

AEGL 3 12 8.5 6.7 4.2 2.1 

NR = Not recommended due to insufficient data 

79-36-7 Dichloroacetyl Chloride (ppm) 11/13/06 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.040 0.040 0.040 0.040 0.040 

AEGL 2 2.9 2.0 1.6 0.40 0.20 

AEGL 3 95 66 52 13 6.5 

79-38-9 Trifluorochloroethylene (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 29 20 16 10 10 

AEGL 2 160 110 86 54 54 

AEGL 3 1500 690 420 150 91 

79-41-4 Methacrylic acid (ppm) 12/12/06 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 6.7 6.7 6.7 6.7 6.7 

AEGL 2 76 76 61 38 25 

AEGL 3 280 280 220 140 71 

80-62-6 Methyl methacrylate (ppm) 12/12/06 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 17 17 17 17 17 

AEGL 2 150 150 120 76 50 

AEGL 3 720 720 570 360 180 

Level of Distinct Odor Awareness (LOA) = 0.11 ppm 
October 30, 2013																																																									Interim AEGLs

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92-52-4 Biphenyl (ppm) 10/19/2007 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 12 12 9.6 6.0 4.4 

AEGL 3 NR NR NR NR NR 

NR = Not recommended due to insufficient data 

98-82-8 Cumene (ppm) 11/13/06 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 50 50 50 50 50 

AEGL 2 550 380 300 190 130 

AEGL 3 1300 920 730 460 300 

Level of Distinct Odor Awareness (LOA) = 0.017 ppm 

100-41-4 Ethyl benzene (ppm) 9/21/09 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 33 33 33 33 33 

AEGL 2 2900 1600 1100 660 580 

AEGL 3 4700 2600 1800 1000 910 

100-42-5 Styrene (ppm) 12/12/06 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 20 20 20 20 20 

AEGL 2 230 160 130 130 130 

AEGL 3 1,900* 1,900* 1,100* 340 340 

Lower Explosive Limit (LEL) = 9,000 ppm 

* = ≥ 10% LEL 

For values denoted as * safety considerations against the hazard(s) of explosion(s) must be taken into account. 

Level of Distinct Odor Awareness (LOA) = 0.54 ppm 
October 30, 2013																																																									Interim AEGLs

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100-47-0 Benzonitrile (ppm) 11/13/06 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 39 27 22 11 5.6 

AEGL 3 100 71 56 23 11 

NR = Not recommended due to insufficient data 

106-88-7 1,2-Butylene oxide (ppm) 9/21/09 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 72 72 72 72 72 

AEGL 2 140 140 140 140 140 

 AEGL 3 410 410 330 210 210 

Level of Distinct Odor Awareness (LOA) = 0.15 ppm 

106-89-8 Epichlorohydrin (ppm) 12/13/04 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 5.7 5.7 5.7 5.7 5.7 

AEGL 2 53 53 24 14 10 

AEGL 3 570 160 72 44 30 

106-93-4 1,2-Dibromoethane (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 52 26 17 7.1 4.6 

AEGL 2 73 37 24 10 6.5 

 AEGL 3 170 76 46 17 10 
October 30, 2013																																																									Interim AEGLs

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106-99-0 1,3-Butadiene (ppm) 11/13/06 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 670 670 670 670 670 

AEGL 2 *6700 *6700 *5300 *3400 *2700 

 AEGL 3 ***27,000 ***27,000 ***22,000 **14,000 *6,800 

Lower Explosive Limit (LEL) = 20,000 ppm 

* = ≥10% LEL; ** =≥50% LEL; *** = ≥100% LEL 

AEGL 3 - 4 hr = ** 14,000 ppm 

For values denoted as * safety considerations against the hazard(s) of explosion(s) must be taken into account. 

For values denoted as ** extreme safety considerations against the hazard(s) of explosion(s) must be taken into 

account 

Level of Distinct Odor Awareness = 3.7 ppm 

107-05-1 Allyl chloride (ppm) 05/16/08 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 2.8 2.8 2.8 2.8 2.8 

AEGL 2 69 69 54 34 22 

AEGL 3 180 180 140 90 60 

107-07-3 Ethylene chlorohydrin (2-Chloroethanol) (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 7.0 5.0 4.0 1.6 0.77 

AEGL 3 21 15 12 4.7 2.3 

NR = Not recommended due to insufficient data 

107-12-0 Propionitrile (ppm) 9/17/03 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 9.0 9.0 7.0 2.9 1.4 

AEGL 3 46 46 37 23 12 

NR = Not recommended due to insufficient data 
October 30, 2013																																																									Interim AEGLs

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107-13-1 Acrylonitrile (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 4.6 4.6 4.6 4.6 4.6 

AEGL 2 290 110 57 16 8.6 

AEGL 3 480 180 100 35 19 

107-14-2 Chloroacetonitrile (ppm) 03/20/07 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 49 49 32 13 8.6 

AEGL 3 100 100 67 28 18 

NR = Not recommended due to insufficient data 

107-18-6 Allyl alcohol (ppm) 6/12/01 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 9.3 6.4 5.1 2.2 1.0 

AEGL 2 87 27 13 3.1 1.5 

AEGL 3 260 82 40 9.3 4.5 

108-23-6 Isopropyl chloroformate (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 6.0 4.3 3.3 0.83 0.43 

AEGL 3 18 13 10 2.5 1.3 

NR = Not recommended due to insufficient data 

108-88-3 Toluene (ppm) 12/10/02 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 200 200 200 200 200 

AEGL 2 3,100* 1,600* 1,200 790 650 

AEGL 3 ** 13,000 6,100* 4,500* 3,000* 2,500* 

Lower Explosive Limit (LEL) = 14,000 ppm 

* = ≥10% LEL; ** = ≥50% LEL 

For values denoted as * safety considerations against the hazard(s) of explosion(s) must be taken into account. 

For values denoted as ** extreme safety considerations against the hazard(s) of explosion(s) must be taken into account 
October 30, 2013																																																									Interim AEGLs

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109-61-5 Propyl chloroformate (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 6.7 4.7 3.7 0.90 0.47 

AEGL 3 20 14 11 2.7 1.4 

NR = Not recommended due to insufficient data 

109-77-3 Malononitrile (ppm) 3/20/07 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 7.5 7.5 4.9 2.0 1.3 

AEGL 3 15 15 10 4.3 2.8 

NR = Not recommended due to insufficient data 

116-14-3 Tetrafluoroethylene (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 270 270 220 140 90 

AEGL 2 690 690 550 340 230 

AEGL 3 4200 4200 3300 2100 1000 

116-15-4 Hexafluoropropylene (ppm) 10/19/2007 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 150 67 40 14 8.3 

AEGL 2 350 150 91 32 19 

AEGL 3 1800 800 480 170 100 

121-45-9 Trimethyl phosphite (ppm) 8/28/2010 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 11 7.6 6.1 3.8 2.5 

AEGL 2 110 77 61 38 25 

AEGL 3 560 390 310 160 81 
October 30, 2013																																																									Interim AEGLs

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121-75-5 Malathion (mg/m3

) 9/21/09 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 15 15 15 15 15

AEGL 2 150 150 120 77 50 

AEGL 3 500 500 390 250 140 

123-38-6 Propionaldehyde (ppm) 11/13/06 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 45 45 45 45 45 

AEGL 2 330 330 260 170 110 

AEGL 3 1,100 1,100 840 530 260 

Level of Distinct Odor Awareness = 0.64 ppm 

123-91-1 1,4-Dioxane (ppm) 10/25/04 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 17 17 17 17 17 

AEGL 2 580 400 320 200 100 

AEGL 3 950 950 760 480 240 

Level of Distinct Odor Awareness (LOA) = 1.7 ppm 

124-40-3 Dimethylamine (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 10 10 10 10 10 

AEGL 2 130 85 66 40 32 

AEGL 3 480 320 250 150 120 

Level of Distinct Odor Awareness = 0.53 ppm 

126-98-7 Methacrylonitrile (ppm) 11/13/06 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 2.0 2.0 1.0 1.0 1.0 

AEGL 2 16 16 13 6.5 6.5 

AEGL 3 32 32 25 13 13 
October 30, 2013																																																									Interim AEGLs

 Page 43 of 60

127-18-4 Tetrachloroethylene (ppm) 6/12/01 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 35 35 35 35 35 

AEGL 2 230 230 230 120 81 

AEGL 3 1,600 1,600 1,200 580 410 

140-88-5 Ethyl acrylate (ppm) 12/12/06 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 8.3 8.3 8.3 8.3 8.3 

AEGL 2 66 45 36 19 9.4 

AEGL 3 950 410 240 71 41 

141-32-2 n-Butyl acrylate (ppm) 12/12/06 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 8.3 8.3 8.3 8.3 8.3 

AEGL 2 160 160 130 81 53 

AEGL 3 820 820 480 170 97 

143-33-9 Sodium cyanide (mg/m3) 8/28/2010 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 5.0 5.0 4.0 2.6 2.0 

AEGL 2 34 20 14 7.0 5.0 

AEGL 3 54 42 30 17 13 

151-50-8 Potassium cyanide (mg/m3

) 8/28/2010 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 6.6 6.6 5.3 3.5 2.7 

AEGL 2 45 27 19 9.3 6.6 

AEGL 3 72 56 40 23 18 
October 30, 2013																																																									Interim AEGLs

 Page 44 of 60

298-00-0 Methyl parathion (mg/m3

) 9/21/09 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 2.1 1.5 1.2 0.73 0.37 

AEGL 3 6.4 4.4 3.5 2.2 1.1 

NR = Not recommended due to insufficient data 

298-02-2 Phorate (mg/m3

) 9/21/09 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.073 0.050 0.040 0.010 0.0050 

AEGL 3 0.22 0.15 0.12 0.031 0.015 

NR = Not recommended due to insufficient data 

353-50-4 Carbonyl fluoride (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.35 0.35 0.28 0.17 0.087 

AEGL 3 1.0 1.0 0.83 0.52 0.26 

NR = Not recommended due to insufficient data 

382-21-8 Perfluoroisobutylene (ppm) 8/28/2010 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.67 0.22 0.11 0.028 0.014 

AEGL 3 2.0 0.67 0.33 0.083 0.042 

NR = Not recommended due to insufficient data 

460-19-5 Cyanogen (ppm) 9/21/09 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 2.5 2.5 2.0 1.3 1.0 

AEGL 2 50 17 8.3 4.3 4.3 

AEGL 3 150 50 25 13 13 
October 30, 2013																																																									Interim AEGLs

 Page 45 of 60

463-51-4 Ketene (ppm) 10/19/2007 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.24 0.24 0.19 0.12 0.088 

AEGL 2 0.83 0.83 0.66 0.42 0.23 

AEGL 3 2.5 2.5 2.0 1.2 0.68 

463-58-1 Carbonyl sulfide (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 69 69 55 34 23 

AEGL 3 190 190 150 95 48 

NR = Not recommended due to lack of warning properties 

501-53-1 Benzyl chloroformate (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 1.2 1.2 0.97 0.63 0.31 

AEGL 3 3.7 3.7 2.9 1.9 0.93 

NR = Not recommended due to insufficient data 

538-07-8 Nitrogen Mustard-1 (mg/m3

) 10/19/07 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.13 0.044 0.022 0.0056 0.0028 

AEGL 3 2.2 0.74 0.37 0.093 0.047 

NR = Not recommended due to insufficient data 

541-41-3 Ethyl chloroformate (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 2.9 2.0 1.6 0.40 0.20 

AEGL 3 8.8 6.1 4.8 1.2 0.60 

NR = Not recommended due to insufficient data 
October 30, 2013																																																									Interim AEGLs

 Page 46 of 60

543-27-1 Isobutyl chloroformate (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 4.0 2.8 2.2 0.57 0.28 

AEGL 3 12 8.4 6.7 1.7 0.83 

NR = Not recommended due to insufficient data 

555-77-1 Nitrogen Mustard-3 (mg/m3

) 10/19/2007 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.13 0.044 0.022 0.0056 0.0028 

AEGL 3 2.2 0.74 0.37 0.093 0.047 

NR = Not recommended due to insufficient data 

578-94-9 Adamsite (mg/m3) 10/19/2007 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.20 0.041 0.016 0.0022 0.00083 

AEGL 2 9.7 6.8 2.6 0.36 0.14 

AEGL 3 21 17 6.4 0.91 0.34 

592-01-8 Calcium cyanide (mg/m3

) 8/28/2010 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 4.7 4.7 3.8 2.4 1.9 

AEGL 2 32 19 13 6.6 4.7 

 AEGL 3 51 39 28 16 12 

592-34-7 n-Butyl chloroformate (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 4.0 2.8 2.2 0.57 0.28 

AEGL 3 12 8.4 6.7 1.7 0.83 

NR = Not recommended due to insufficient data 
October 30, 2013																																																									Interim AEGLs

 Page 47 of 60

593-89-5 Methyldichloroarsine (mg/m3

) 10/19/2007 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.63 0.14 0.053 0.015 0.0063 

AEGL 3 1.9 0.42 0.16 0.044 0.019 

NR = Not recommended due to insufficient data 

598-14-1 Ethyldichloroarsine (mg/m3) 10/19/2007 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.17 0.057 0.029 NR NR 

AEGL 3 0.52 0.17 0.086 NR NR 

NR = Not recommended due to insufficient data 

674-82-8 Diketene (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 11 7.7 6.0 1.5 0.77 

AEGL 3 33 23 18 4.5 2.3 

NR = Not recommended due to insufficient data 

696-28-6 Phenyl dichloroarsine (mg/m3

) 10/19/2007 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.37 0.12 0.061 NR NR 

AEGL 3 1.1 0.37 0.18 NR NR 

NR = Not recommended due to insufficient data 

712-48-1 Diphenylchloroarsine (mg/m3

) 10/19/2007 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 1.1 0.79 0.39 0.098 0.049 

AEGL 3 3.4 2.4 1.2 0.30 0.15 

NR = Not recommended due to insufficient data 
October 30, 2013																																																									Interim AEGLs

 Page 48 of 60

868-85-9 Dimethyl phosphite (ppm) 8/28/2010 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 120 120 95 60 39 

AEGL 3 190 190 150 96 63 

NR = Not recommended due to insufficient data 

1327-53-3 Arsenic trioxide (mg/m3

) 10/19/2007 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 3.7 3.7 3.0 1.9 1.2 

AEGL 3 11 11 9.1 5.7 3.7 

NR = Not recommended due to insufficient data 

1634-04-4 Methyl-tertiary-butyl ether (MTBE) (ppm) 12/5/07 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 50 50 50 50 50 

AEGL 2 1400 800 570 400 400 

AEGL 3 ** *7500 *5300 *2700 *1900 

Lower Explosive Limit (LEL) = (16,000) 

* = ≥10% LEL 

** = ≥50% LEL 

NR = Not recommended due to insufficient data 

AEGL 3 - 10 min = ** 13,000 ppm 

For values denoted as * safety considerations against the hazard(s) of explosion(s) must be taken into account. 

For values denoted as ** extreme safety considerations 

1794-86-1 Phosgene oxime (mg/m3) 8/28/2010 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.17 0.056 0.028 0.0069 0.0035 

AEGL 2 0.50 0.17 0.083 0.021 0.010 

AEGL 3 36 25 13 3.1 1.6 
October 30, 2013																																																									Interim AEGLs

 Page 49 of 60

1885-14-9 Phenyl chloroformate (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.24 0.24 0.19 0.12 0.060 

AEGL 3 0.72 0.72 0.57 0.36 0.18 

NR = Not recommended due to insufficient data 

2698-41-1 Tear Gas (mg/m3

) 9/21/09 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.050 0.050 0.050 0.050 0.050

AEGL 2 0.50 0.50 0.50 0.50 0.50

AEGL 3 140 29 11 1.5 1.5 

2699-79-8 Sulfuryl fluoride (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 27 27 21 13 6.7 

AEGL 3 81 81 64 40 20 

NR = Not recommended due to insufficient data 

2937-50-0 Allyl chloroformate (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 1.3 0.87 0.70 0.18 0.090 

AEGL 3 3.8 2.6 2.1 0.53 0.26 

NR = Not recommended due to insufficient data 

2941-64-2 Ethylchlorothioformate (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.33 0.33 0.26 0.17 0.083 

AEGL 3 1.0 1.0 0.79 0.50 0.25 

NR = Not recommended due to insufficient data 
October 30, 2013																																																									Interim AEGLs

 Page 50 of 60

3282-30-2 Trimethylacetyl chloride (ppm) 9/21/09 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.67 0.67 0.53 0.33 0.22 

AEGL 3 2.0 2.0 1.6 0.99 0.65 

NR = Not recommended due to insufficient data 

7439-97-6 Mercury Vapor (mg/m3

) 8/28/2010 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 3.1 2.1 1.7 0.67 0.33 

AEGL 3 16 11 8.9 2.2 2.2 

7440-43-9 Cadmium (mg/m3) 8/28/2010 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.13 0.13 0.10 0.063 0.041 

AEGL 2 1.4 0.96 0.76 0.40 0.20 

AEGL 3 8.5 5.9 4.7 1.9 0.93 

7446-11-9 Sulfur trioxide (mg/m3

) 11/13/06 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.20 0.20 0.20 0.20 0.20 

AEGL 2 8.7 8.7 8.7 8.7 8.7 

AEGL 3 270 200 160 110 93 

7550-45-0 Titanium tetrachloride (ppm) 12/12/06 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 7.6 2.2 1.0 0.21 0.094 

AEGL 3 38 13 5.7 2.0 0.91 

NR = Not recommended due to insufficient data 

7664-93-9 Sulfuric acid (mg/m3) 11/13/06 

 10 min 30 min 60 min 4 hr 8 hr 
October 30, 2013																																																									Interim AEGLs

 Page 51 of 60

AEGL 1 0.20 0.20 0.20 0.20 0.20 

AEGL 2 8.7 8.7 8.7 8.7 8.7 

AEGL 3 270 200 160 110 93 

7719-09-7 Thionyl chloride (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 4.3 3.0 2.4 0.59 0.30 

AEGL 3 25 17 14 3.4 1.7 

NR = Not recommended due to insufficient data 

7782-65-2 Germane (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.30 0.21 0.17 0.040 0.020 

AEGL 3 0.91 0.63 0.50 0.13 0.060 

NR = Not recommended due to insufficient data 

7783-07-5 Hydrogen selenide (ppm) 4/14/10 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.66 0.44 0.33 0.20 0.15 

AEGL 3 2.2 1.4 1.1 0.65 0.49 

NR = Not recommended due to insufficient data 

7783-41-7 Oxygen difluoride (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 4.3 1.6 0.83 0.24 0.13 

AEGL 3 13 4.7 2.5 0.71 0.38 

NR = Not recommended due to insufficient data 
October 30, 2013																																																									Interim AEGLs

 Page 52 of 60

7783-54-2 Nitrogen trifluoride (ppm) 9/21/09 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 1200 400 200 50 25 

AEGL 2 3100 1100 530 140 68 

AEGL 3 5000 1700 860 220 110 

7783-61-1 Silicon tetrafluoride (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.05 0.05 0.05 0.05 0.05 

AEGL 2 6.3 4.3 3.3 0.87 0.43 

AEGL 3 19 13 10 2.6 1.3 

7783-79-1 Selenium hexafluoride (ppm) 10/19/2007 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.067 0.067 0.053 0.033 0.017 

AEGL 2 0.11 0.11 0.087 0.057 0.028 

AEGL 3 0.33 0.33 0.26 0.17 0.083 

7783-80-4 Tellurium hexafluoride (ppm) 8/28/2010 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.032 0.022 0.018 0.011 0.0057 

AEGL 3 0.096 0.067 0.053 0.033 0.017 

NR = Not recommended due to insufficient data 

7787-71-5 Bromine trifluoride (ppm) 11/13/06 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.12 0.12 0.12 0.12 0.12 

AEGL 2 8.1 3.5 2.0 0.70 0.41 

AEGL 3 84 36 21 7.3 7.3 
October 30, 2013																																																									Interim AEGLs

 Page 53 of 60

7789-30-2 Bromine pentafluoride (ppm) 4/14/10 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 3.0 2.0 1.0 0.48 0.33 

AEGL 3 79 55 33 8.3 4.2 

NR = Not recommended due to insufficient data 

7790-94-5 Chlorosulfonic acid (mg/m3

) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.10 0.10 0.10 0.10 0.10 

AEGL 2 4.4 4.4 4.4 4.4 4.4 

AEGL 3 45 31 25 6.1 6.1 

7803-52-3 Stibine (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 4.2 2.9 1.5 0.36 0.18 

AEGL 3 28 19 9.6 2.4 1.2 

NR = Not recommended due to insufficient data 

7803-62-5 Silane (ppm) 10/19/2007 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 100 100 100 NR NR 

AEGL 2 170 170 130 80 42 

AEGL 3 300 300 270 170 80 

NR = Not recommended due to insufficient data 

8014-95-7 Oleum (mg/m3

) 11/13/06 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.20 0.20 0.20 0.20 0.20 

AEGL 2 8.7 8.7 8.7 8.7 8.7 

AEGL 3 270 200 160 110 93 
October 30, 2013																																																									Interim AEGLs

 Page 54 of 60

10025-67-9 Disulfur dichloride (ppm) 11/13/06 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.67 0.67 0.53 0.33 0.17 

AEGL 2 8.1 8.1 6.4 4.0 2.0 

AEGL 3 19 19 15 9.6 4.8 

10034-85-2 * Hydrogen Iodide (ppm) 4/14/10 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 1.0 1.0 1.0 1.0 1.0 

AEGL 2 150 50 25 13 13 

AEGL 3 740 250 120 31 31 

* Values based on Hydrogen Bromide (insufficient information for HI) 

10035-10-6 Hydrogen Bromide (ppm) 4/14/10 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 1.0 1.0 1.0 1.0 1.0 

AEGL 2 150 50 25 13 13 

AEGL 3 740 250 120 31 31 

10294-33-4 Boron tribromide (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.33 0.33 0.33 0.33 0.33 

AEGL 2 33 14 7.3 3.7 3.7 

AEGL 3 250 83 40 10 10 

13637-63-3 Chlorine pentafluoride (ppm) 11/13/06 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.30 0.30 0.30 NR NR 

AEGL 2 3.0 2.0 1.0 0.48 0.33 

AEGL 3 21 12 8.0 3.9 2.7 

NR = Not Recommended due to inadequate data 
October 30, 2013																																																									Interim AEGLs

 Page 55 of 60

13863-41-7 Bromine chloride (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.50 0.50 0.50 0.50 0.50 

AEGL 2 3.2 3.2 2.5 1.6 1.2 

AEGL 3 9.5 9.5 7.6 4.8 3.5 

17462-58-7 sec-Butyl chloroformate (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 4.0 2.8 2.2 0.57 0.28 

AEGL 3 12 8.4 6.7 1.7 0.83 

19624-22-7 Pentaborane (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.56 0.24 0.14 0.048 0.028 

AEGL 3 2.8 1.2 0.70 0.24 0.14 

NR = Not recommended due to insufficient data 

20816-12-0 Osmium tetroxide (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.015 0.011 0.0084 0.0033 0.0017 

AEGL 3 5.0 5.0 4.0 2.5 2.0 

NR = Not recommended due to insufficient data 

24468-13-1 2-Ethylhexylchloroformate (ppm) (May 16, 2008) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 1.2 1.2 0.97 0.60 0.30 

AEGL 3 3.6 3.6 2.9 1.8 0.91 

NR = Not recommended due to insufficient data 
October 30, 2013																																																		Proposed AEGLs

 Page 56 of 60

Proposed AEGLs (12) 

Proposed AEGLs are published in the Federal Register for public comment following review and concurrence of Draft 

AEGLs by the NAC/AEGL.

62-73-7 Dichlorvos (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 0.11 0.11 0.11 0.11 0.11 

AEGL 2 0.56 0.56 0.56 0.56 0.56

AEGL 3 8.0 8.0 8.0 8.0 8.0

74-88-4 Methyl iodide (ppm) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 54 31 22 11 11 

AEGL 2 200 120 82 41 29 

AEGL 3 670 400 290 150 98 

116-06-3 Aldicarb (mg/m3) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.16 0.11 0.087 0.053 0.027 

AEGL 3 0.47 0.32 0.26 0.16 0.081 

141-66-2 Dicrotophos (mg/m3

) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.53 0.37 0.29 0.073 0.037 

AEGL 3 1.6 1.1 0.88 0.22 0.11 

NR = Not recommended due to insufficient data 
October 30, 2013																																																		Proposed AEGLs

 Page 57 of 60

6923-22-4 Monocrotophos (mg/m3

) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.43 0.31 0.24 0.21 0.10 

AEGL 3 1.3 0.92 0.73 0.62 0.31 

NR = Not recommended due to insufficient data 

7723-14-0 Red Phosphorus (mg/m3

) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 6.7 4.7 3.7 0.93 0.47 

AEGL 2 20 14 11 2.8 1.4 

AEGL 3 85 59 47 12 5.9 

8006-61-9 Automotive Gasoline (unleaded) (mg/m3) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 730 730 730 730 730 

AEGL 2 *7500 *7500 *7500 *7500 *7500 

AEGL 3 ND ND ND ND ND 

ND = Not determined under normal exposure scenarios 

Lower Explosive Limit (LEL) = 11,000 ppm 

* ≥10% LEL; ** ≥50% LEL; *** ≥100% LEL 

AEGL 2 is higher than 1/10 of the Lower Exposure Limit (LEL = 62,000 mg/m3 ) 

For values denoted as * safety considerations against the hazard(s) of explosion(s) must be taken into account. 

10265-92-6 Methamidophos (mg/m3) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 2.4 2.4 1.9 1.2 0.61 

AEGL 2 4.5 4.5 3.6 2.3 1.1 

AEGL 3 10 10 8.1 5.1 2.5 
October 30, 2013																																																		Proposed AEGLs

 Page 58 of 60

13171-21-6 Phosphamidon (mg/m3

) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 0.37 0.37 0.30 0.19 0.093 

AEGL 3 1.1 1.1 0.90 0.57 0.28 

NR = Not recommended due to insufficient data 

16752-77-5 Methomyl (mg/m3

) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 7 7 5.7 3.3 1.7 

AEGL 3 21 21 17 10 5.2 

NR = Not recommended due to insufficient data 

22224-92-6 Fenamiphos (mg/m3

) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR 

AEGL 2 1.0 0.80 0.70 0.53 0.43 

AEGL 3 3.0 2.4 2.1 1.6 1.3 

NR = Not recommended due to insufficient data 

23135-22-0 Oxamyl (mg/m3) 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 3.6 1.8 1.2 0.49 0.32 

AEGL 2 5.3 2.7 1.8 0.73 0.47 

AEGL 3 16 8.2 5.3 2.2 1.4 
October 30, 2013																																																										Holding AEGLs

 Page 59 of 60

Holding AEGLs (46)

Holding Status AEGLs have been reviewed by the NAC/AEGL Committee and are under further review. At this 

time values are not being developed. 

CAS Number Chemical Name 

 Fluoroacetate salts 

62-74-7 Sodium fluoroacetate 

75-36-5 Acetyl Chloride 

75-74-1 Tetramethyl lead 

76-02-8 Trichloroacetyl Chloride 

77-10-0 Phencyclidine 

80-12-6 Tetramethylene disulfotetramine 

80-63-7 Methyl 2-chloroacrylate 

97-02-9 2,4-Dinitroaniline 

107-49-3 Tetraethyl pyrophosphate 

110-78-1 n-Propyl isocyanate 

144-49-0 Monofluoroacetic acid 

151-38-2 Methoxyethyl mercuric acetate 

371-62-0 Ethylene fluorohydrin 

453-18-9 Methyl fluoroacetate 

463-71-8 Thiophosgene 

503-38-8 Diphosgene 

506-77-4 Cyanogen chloride 

556-64-9 Methyl thiocyanate 

561-27-3 Diacetyl morphine 

814-68-6 Acrylyl chloride 

950-35-6 Methyl paroxon 

993-43-1 Ethyl phosphonothioic dichloride 

1303-28-2 Arsenic pentoxide 

1498-40-4 Ethyl phosphonous dichloride 

1609-86-5 t-Butyl isocyanate 

1737-93-5 3,5-Dichloro-2,4,6-trifluoropyridine 

1795-48-8 Isopropyl isocyanate 

1873-29-6 Isobutyl isocyanate 

2696-92-6 Nitrosyl chloride 

354-32-5 Trifluoroacetyl chloride 

4300-97-4 Chloropivaloyl chloride 

 
October 30, 2013																																																										Holding AEGLs

 Page 60 of 60

CAS Number Chemical Name 

4685-14-7 Paraquat 

6427-21-0 Methoxymethyl isocyanate 

7775-14-6 Sodium dithionite 

7783-60-0 Sulfur tetrafluoride 

7783-82-6 Tungsten hexafluoride 

7784-34-1 Arsenic trichloride 

7786-34-7 Mevinphos (mg/m3) 

7789-21-1 Fluorosulfonic acid 

7803-49-8 Hydroxylamine 

7803-54-5 Magnesium diamide 

10294-34-5 Boron Trichloride 

10544-73-7 Nitrogen trioxide 

10545-99-0 Sulfur dichloride 

 

9009-86-3 Ricin (mg/m3)* 

 10 min 30 min 60 min 4 hr 8 hr 

AEGL 1 NR NR NR NR NR

AEGL 2 NR NR NR NR NR

AEGL 3 0.033 0.010 0.0048 NR NR 

* Tentative Ricin values pending receipt and review of data for April 13-15 2010 NAC/AEGL Meeting