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Methoxychlor																				Related Pages
Synonyms & Trade Names
			p,p'-Dimethoxydiphenyltrichloroethane, DMDT, Methoxy-DDT, 2,2-bis(p-Methoxyphenyl)-1,1,1-trichloroethane, 1,1,1-Trichloro-2,2-bis-(p-methoxyphenyl)ethane
CAS No.
			72-43-5
	RTECS No.
			KJ3675000
	DOT ID & Guide
			2761 151(organochlorine pesticide, solid, toxic)

Formula(C6H4OCH3)2CHCCl3
	Conversion
	IDLH
			Ca [5000 mg/m3]See: 72435

Exposure Limits
			NIOSH RELCa See Appendix A
					OSHA PEL TWA 15 mg/m3See Appendix G
	Measurement Methods
			**NIOSH** S371 (II-4);**OSHA** PV2038
					
					See: NMAM or OSHA Methods
										
Physical Description
			Colorless to light-yellow crystals with a slight, fruity odor.
					[insecticide]													
										
Molecular Weight345.7	
	Boiling PointDecomposes
	Melting Point171°F
	Solubility0.00001%
	Vapor PressureVery low
	Ionization Potential?											
Specific Gravity1.41	
	Flash Point?
	Upper Explosive Limit?
	Lower Explosive Limit?
Combustible Solid, but difficult to burn.
Incompatibilities & Reactivities
			Oxidizers
Exposure Routes
			inhalation, ingestion
Symptoms
			In Animals: fasciculation, trembling, convulsions; kidney, liver damage; [potential occupational carcinogen]
Target Organs
			central nervous system, liver, kidneys
Cancer Site[in animals: liver & ovarian cancer]										
Personal Protection/Sanitation
			(See protection codes) **Skin:**Prevent skin contact
							**Eyes:**No recommendation
							**Wash skin:**When contaminated/Daily
							**Remove:**When wet or contaminated
							**Change:**Daily
	First Aid
			(See procedures)**Skin:**Soap wash
							**Breathing:**Fresh air
							**Swallow:**Medical attention immediately
Respirator Recommendations
			**NIOSH****At concentrations above the NIOSH REL, or where there is no REL, at any detectable concentration:** (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus**Escape:** (APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister having an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters.Any appropriate escape-type, self-contained breathing apparatus
				Important additional information about respirator selection
See also
			INTRODUCTION
					  ICSC CARD: 1306

			
							

			Page last reviewed:  October 30, 2019						Content
							source: 	National Institute for Occupational Safety and Health NIOSH Pocket Guide to Chemical Hazards
Introduction
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Chemical Names, Synonyms and Trade Names
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
CAS Numbers
RTECS Numbers
Appendices
A – NIOSH Potential Occupational Carcinogens
B – Thirteen OSHA-Regulated Carcinogens
C – Supplementary Exposure Limits
D – Substances with No Established RELs
E – OSHA Respirator Requirements for Selected Chemicals
F – Miscellaneous Notes
G – 1989 Air Contaminants Update Project: Exposure Limits NOT in Effect
Type C & CE – Definitions for Type C and Type CE Respirators
Personal Protection and Sanitation Codes
First Aid Procedures Follow NIOSH Facebook
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