## Occupational Safety and Health Admin. , Labor 

## (4) The employer shall promptly determine and document an appropriate response to each of the findings of the compliance audit , and document that deficiencies have been corrected.

(5) Employers shall retain the two (2) most recent compliance audit reports.

(p) 

# Trade secrets. (1) Employers shall make all information necessary to comply with the section available to those persons responsible for compiling the process safety information (required by paragraph (d) of this section) , those assisting in the development of the process hazard analysis (required by paragraph (e) of this section) , those responsible for developing the operating procedures (required by parag raph (f) 

## of this section) , and those involved in incident investigations (required by paragraph (m} of this section), emergency planning and response (paragraph (n} of this section) and compliance audits (paragraph (o ) of this section) without regard to possible trade secret status of s u ch information .

(2) Nothing in this paragraph shall preclude the employer from requiring the persons to whom the information is made available under paragraph (p}(1 ) of this section to enter into confidentiality agreements not to dis close the information as set forth in 29 CFR 1910 . 1200.

(3) Subject to the rule s and proce dures set forth in 29 CFR 1910.1200(i )(l) through 1910 . 1200(i} (l2), employees and their designated representatives shall have access to trade secret information contained within the process hazard analysis and other documents required to be developed by this standard. APPENDIX A TO §1910.119-LIST O F HIGHLY HAZARDOUS CHEMICALS , TOXICS AND REACTIVE$ ( MANDATORY) 

## This appendix conta ins a listing of toxi c a nd reactive highl y hazardou s ch emic a l s which present a potential for a catastrophi c event at or a bove the thresho ld quantity. CHEM I CAL name Acetaldehyde
. Acrolein (2-Propenal) Acrylyl Chloride Allyl Chloride Allylamine
. Alkylaluminums
. Ammonia , Anhydrous
. Ammonia solutions (>44% ammonia

by weight) CAS" 

### TO" 75-()7-Q 2500 107-Q2-8 150 8t4-6!H; 250 107-Q5- 1 1000 107-11-9 1000

Varies 5000 7664-41-7 1 0000 7664-41-7 1 5000 CHEMICAL name Ammonium Perchlorate
. 

### Ammonium Permanganate . Arsine (also called Arsenic Hydride)
. Bis(Chloromethyl) Ether
... 

### Boron Trichloride
. Boron Trifluoride
.. .. . .... . .. . . . .. ........ .. .... .. Bromine
.. Bromine Chloride
. Bromine Pentafluoride
. 

### Bromine Trifluoride
... 3-Bromopropyne (also called Pro·

pargyl Bromide) Bu tyl Hydroperoxide (Tertiary)
. Butyl Perbenzoate (Tertiary)
. Carbonyl Chloride (see Phosgene)
. Carbonyl Fluoride
. Cellulose Nitrate (concentration

> 12.6% nitrogen
. Chlorine ................ .... .. .. . Chlorine Dioxide
. Chlorine Pentrafluoride
. Chlorine Trifluoride
. Chlorodiethylaluminum (also called

Diethylaluminum Chloride)
. 1 -Chloro ·2.4·Dinitrobe nzene . Chloromethyl Methyl Ether
. Chloropicrin Chloropicrin and Methyl Bromide mixture . Chloropicrin and Methyl Chloride mixture .. Cumene H ydroperoxide Cyanogen
. Cyanogen Chloride
.. Cyanuric Fluoride
. Diacetyl Peroxide (Concentration

>70% ) . Diazomethane Dibenzoyl Peroxide Diborane
. Dibutyl Peroxide (Tertiary) Dichiara Acetylene Dichlorosilane
. Diethylzinc
. . . Diisopropyl Peroxydicarbonate
. Dilaluroyl P eroxide Oimethyldichlorosilane
. Dimethylhydrazine
. 1 , 1· ... Oimethylamine, Anhydrous 2,4-Dinitroaniline ...... ... . . . .. Ethyl Methyl Ketone Peroxide (also

Methyl Ethyl Ketone PeroXIde ; concentration >60% )
. Ethyl N itrite
.. Ethylamine
. Ethylene Fluorohydrin Ethylen e Oxide
. Ethyleneimine
. Fluorine . Formaldehyde (Formalin)
.. Furan
. . ... Hexaflu oroacetone Hydrochloric Acid, Anhydrous
. Hydrofluoric Acid, Anhydrous
. Hydrogen Bromide Hydrogen Chloride Hydrogen Cyanide , Anhydrous
. Hydrogen Fluoride .. Hydrogen Peroxide (52% by weight or

greater) Hydrogen Selenide
. Hydrogen Sulfide
... Hydroxylamine
. Iron
. Pentacarbonyl 

# 361 § 1910.119 CAS' 779()-9S...9 7787-36-2 7784-42-1 542-8S...1 1 0294-34-5 7637-07-2 7726-95-6 1 3863-4 1-7

**778~3()-2** 7787-7 1 -5 106-96-7 75-91-2 614-4SC-9 75-44-5 353-50-4 9004-70-Q 7782-5()-5 10049-Q4-4 13637-83-3 7790-91-2

96-1<H> 97-Q()-7 107-3()-2 76-o6-2

None None 8()-15-9

**46()-1~5** 506-77-4 675-14-9 11()-22-5 334-8S...3 94-36-Q 19287-45-7

11 0-Q5-4 7572-29-4

**410~96-Q** 557-20-Q 105-64-6 1 05-74-8 75-7S...5 57-14-7 1 24-40-3 97-Q2-9 1338-23-4

**10~ 95-5**  75-()4-7 371-82-Q 75-21-8 151-56-4 7782-4 1-4

5()..{)()-{) 110-Q()-9 684-16-2 7647-0 1-Q

**7684-3~3** 10035-1<H> 7647-Q1-Q

74-9<H>

**7684-3~3** 7722-84-1 7783-07-5 7783-06-4 7803-49-8 13463-4<H> 

# To·· 7500 7500 100 100 

### 2500 250 1 500 1500 

### 2500 15000

100 5000 7500 100 2500 2500 t 500 1000 1 000 1000 

### 5000 5000 500 500 1500 1500 5000 2500 500 100 5000 500 7500 100 

### 5000 250 2500 10000 7500 7500 1000 1000 2500 5000 5000 

### 5000 7500 100 5000 

### 1 000 

### 1000 1000 500 5000 5000 1000 5000 5000 1000 1000 7500 150 1 500 2500 250

# § 1910.1 19 CHEM I CAL name lsopropylamine
. Ketene Melhacrylaldehyde Methacryloyl Chloride
. . . Methacryloyloxyethyl Isocyanate
. Methyl Acrylonitrile Methylamine , Anhydrous
.. Methyl Bromide Methyl Chloride Methyl Chloroformate
. Methyl Ethyl Ketone Peroxide (concentration > 60%)
. Methyl Fluoroacetate
. Methyl Fluorosulfate
. Methyl Hydrazine
. Methyl Iodide
. Methyl Isocyanate Methyl Mercaptan
. Methyl Vinyl Ketone Methyltrichlorosilane
. Nickel Carbonly (Nickel Tetracarbonyl) Nitric Acid (94 .5 % by weight or greater)
. Nitric Oxide
. Nitroaniline (para Nitroaniline
. Nitromethane
. Nitrogen Dioxide
. Nitrogen Oxides (NO ; NO, ; N204 ;

N203) Nitrogen Tetroxide (also called Nitrogen Peroxide) Nitrogen Trifluoride
. Nitrogen Trioxide
. Oleum (65% to 80 % by weight ; also

called Fuming Sulfuric Ac id)
. Osmium Tetroxide
. Oxygen Difluoride (Fluorine Monoxide) Ozone
. Pentaborane
. Peracetic Acid (concentration >60 %

Acetic Acid ; also called Peroxyacetic Acid CAS' 75--31-{) 463-51-4 7fHl5-3 920-4&--7 30674-8G-7

12&--9&--7

**74-8~5** 74-83-9 74-87-3

**7~22-1** 1338-23-4 453-tB-9 421-2G-5 6G-34-4 74-88-4 624-83-9 74-93-1

**7~84-4** 75--78-6

**13463-3~3** 7697-37-2 10102-43-9

100-{)1--{; 75--52-5 101 02-44-{) 101 02-44-{) 10544-72--{; 7783-54-2 10544-73-7 8014-95--7 2081&--12-{) 7783-41-7 10028-15--{; 19624-22-7

**7~21-{)** TO" 5000 100 1000 150 100 250 1000 2500 15000

500 5000 100 100 100 7500 250 5000 100 500 

### 150 500 250 5000 2500 250 250 250 5000 250 1 ,000

100 100 100 100 1000 

## 29 CFR Ch. XVII (7-1-14 Edition) CHEMICAL name Perchloric Acid (concentration >60%

by weight) Perchloromethyl Mercaptan Perchloryl Fluoride Peroxyacetic Acid (concentration

>60% Acetic Acid; also called Peracetic Acid) Phosgene (also called Carbonyl Chloride)
. Phosphine ( Hydrogen Phosphide) Phosphorus Oxychloride (also called

Phosphoryl Chloride) Phosphorus Trichloride Phosphoryl Chloride (also called

Phosphorus Oxychloride) Propargyl Bromide
. Propyl Nitrate
. Sarin
. . . ................. ........ . . . Selenium Hexafluoride Stibine (Antimony Hydride) Sulfur Dioxide (liquid)
. Sulfur Pentatluoride
. Sulfur Tetrafluoride
. Sulfur Trioxide (also called Sulfuric

Anhydride)
. Sulfuric Anhydride (also called Sulfur

Trioxide)
. Tellurium Hexafluoride Tetrafluoroethylene
. .. ................ .. Tetrafluorohydrazine
. Tetramethyl Lead Thionyl Chloride Trichloro (chloromethyl) Silane Trichloro (dichlorophenyl) Silane
... Trichlorosilane
. Trifluorochloroethylene
. Trimethyoxysilane
...

·chemical Abstract Se1V1ce Number. CAS' 7601-9G-3 594-42-3 761&--94-8

**7~21-{)** 75-44-5 7803-51-2 10025--{;7-3

**77 ~12-2**  10025--{;7-3

10&--9&--7 627-3-4 107-44-8

**7783-7~ 1**  7803-52-3

**7446-{)~5** 5714-22-7 7783--{;0-{) 744&--11-9 744&--11-9 7783-80-4 11&-- 1 4-3 1003&--47-2

75--74-1

**7719-{)~7** 1558-25-4 27137-85--5 10025--78-2

**7~38-9** 2487-9G-3 TO" 5000 150 5000 1000 100 100 1000 1000 

### 1000 100 2500 100 1000 500 1000 250 250 1000 1000 250 5000 5000 1000 250 100 

### 2500 5000 10000 1500

..Threshold Quantity in Pounds (Amount necessary to be covered by thi s standard) .



# 362