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s 337. Development and Maintenance of List.
(a) Establishment of Initial List. Substances designated in the sources specified in Labor Code section 6382(b) shall be considered in formulating the initial list.
The Director shall presume all such substances to be potentially hazardous to human health when present occupationally except those which the Director determines do not pose any adverse acute or chronic risk to human health as present occupationally. Those substances which do not pose any risk shall be removed from the list. Evidence of risk shall include any immediate or long-term adverse effect which causes impairment of function, alteration of structure, or increased susceptibility to disease or contributes to adverse effects of other substances. In making a determination of risk, the Director shall consider available scientific data including, but not limited to, data from human epidemiological studies, data from short-term in vitro studies, and data from animal bioassay tests.
Animal bioassay data is admissible and generally indicative of potential effects in humans.
For purposes of this regulation, substances are present occupationally when there is a possibility of exposure either as a result of normal work operations or a reasonably foreseeable emergency resulting from workplace operations. A reasonably foreseeable emergency is one which a reasonable person should anticipate based on usual work conditions, a substance's particular chemical properties (e.g., potential for explosion, fire, reactivity), and the potential for human health hazards. A reasonably foreseeable emergency includes, but is not limited to, spills, fires, explosions, equipment failure, rupture of containers, or failure of control equipment which may or do result in a release of a hazardous substance into the workplace.
(b) Administrative Procedure Followed by the Director for the Development of the Initial List. The Director shall hold a public hearing concerning the initial list. The record will remain open 30 days after the public hearing for additional written comment. Requests to exempt a substance in a particular physical state, volume, or concentration from the provisions of Labor Code sections 6390 to 6399.2 may be made at this time. If no comments in opposition to such a request are made at the public hearing or received during the comment period, or if the Director can find no valid reason why the request should not be considered, it will be incorporated during the Director's preparation of the list.
After the public comment period the Director shall formulate the initial list and send it to the Standards Board for approval. After receipt of the list or a modified list from the Standards Board, the Director will adopt the list and file it with the Office of Administrative Law.
(c) Concentration Requirement. In determining whether the concentration requirement of a substance should be changed pursuant to Labor Code section 6383, the Director shall consider valid and substantial evidence. Valid and substantial evidence shall consist of clinical evidence or toxicological studies including, but not limited to, animal bioassay tests, short-term in vitro tests, and human epidemiological studies. Upon adoption, a regulation indicating the concentration requirement for a substance shall consist of a footnote on the list.
(d) Procedures for Modifying the List. The Director will consider petitions from any member of the public to modify the list or the concentration requirements, pursuant to the procedures specified in Government Code section 11347.1. With petitions to modify the list, the Director shall make any necessary deletions or additions in accordance with the procedures herein set forth for establishing the list. The Director will review the existing list at least every two years and shall make any necessary additions or deletions in accordance with the procedures herein set forth for establishing the list.
(e) Criteria for Modifying the List. Petitions to add or remove a substance on the list, modify the concentration level of a substance, or reference when a particular substance is present in a physical state which does not pose any human health risk must be accompanied with relevant and sufficient scientific data which may include, but is not limited to, short-term tests, animal studies, human epidemiological studies, and clinical data. If the applicant does not include the complete content of a referenced study or other document, there must be sufficient information to permit the Director to identify and obtain the referenced material. The petitioner bears the burden of justifying any proposed modification of the list.
The Director shall consider all evidence submitted, including negative and positive evidence. All evidence must be based on properly designed studies for toxicological endpoints indicating adverse health effects in humans, e.g., carcinogenicity, mutagenicity, neurotoxicity, organ damage/effects.
For purposes of this regulation, animal data is admissible and generally indicative of potential effects in humans.
The absence of a particular category of studies shall not be used to prove the absence of risk.
Negative results generally indicate the absence of statistically positive results in appropriate studies. As all tests for toxicological effects have inherent insensitivities, negative results must be reevaluated in light of the limits of sensitivity of each study, its test design, and the protocol followed.
In evaluating different results among proper tests, as a general rule, positive results shall be given more weight than negative results for purposes of including a substance on the list or modifying the list in reference to concentration, physical state or volume, so that appropriate information may be provided regarding those positive results. In each case, the relative sensitivity of each test shall be a factor in resolving such conflicts.




Note: Authority cited: Section 6380, Labor Code. Reference: Sections 6361, 6380, 6380.5, 6382 and 6383, Labor Code.







s 338. Special Procedures for Supplementary Enforcement of State Plan Requirements Concerning Proposition 65.
(a) This section sets forth special procedures necessary to comply with the terms of the approval by the United States Department of Labor of the California Hazard Communication Standard, pertaining to the incorporation of the occupational applications of the California Safe Drinking and Toxic Enforcement Act (hereinafter Proposition 65), as set forth in 62 Federal Register 31159 (June 6, 1997). This approval specifically placed certain conditions on the enforcement of Proposition 65 with regard to occupational exposures, including that it does not apply to the conduct of manufacturers occurring outside the State of California. Any person proceeding "in the public interest" pursuant to Health and Safety Code s 25249.7(d) (hereinafter "Supplemental Enforcer") or any district attorney or city attorney or prosecutor pursuant to Health and Safety Code s 25249.7(c) (hereinafter "Public Prosecutor"), who alleges the existence of violations of Proposition 65, with respect to occupational exposures as incorporated into the California Hazard Communication Standard (hereinafter "Supplemental Enforcement Matter"), shall comply with the requirements of this section. No Supplemental Enforcement Matter shall proceed except in compliance with the requirements of this section.
(b) 22 CCR s 12903, setting forth specific requirements for the content and manner of service of sixty-day notices under Proposition 65, in effect on April 22, 1997, is adopted and incorporated by reference. In addition, any sixty-day notice concerning a Supplemental Enforcement Matter shall include the following statement:
"This notice alleges the violation of Proposition 65 with respect to occupational exposures governed by the California State Plan for Occupational Safety and Health. The State Plan incorporates the provisions of Proposition 65, as approved by Federal OSHA on June 6, 1997. This approval specifically placed certain conditions with regard to occupational exposures on Proposition 65, including that it does not apply to the conduct of manufacturers occurring outside the State of California. The approval also provides that an employer may use the means of compliance in the general hazard communication requirements to comply with Proposition 65. It also requires that supplemental enforcement is subject to the supervision of the California Occupational Safety and Health Administration. Accordingly, any settlement, civil complaint, or substantive court orders in this matter must be submitted to the Attorney General."
(c) A Supplemental Enforcer or Public Prosecutor who commences a Supplemental Enforcement Matter shall serve a file-endorsed copy of the complaint upon the Attorney General within ten days after filing with the Court.
(d) A Supplemental Enforcer or Public Prosecutor shall serve upon the Attorney General a copy of any motion, or opposition to a motion for summary judgment or summary adjudication of issues, a demurrer, motion for preliminary or injunctive relief, or other dispositive motion, and all memoranda of points and authorities in support of or opposing such motions. These materials shall be served upon the Attorney General on the same day which they are served on the opposing party. A Supplemental Enforcer or Public Prosecutor shall serve upon the Attorney General any decision or order of a court granting or denying summary adjudication, a demurrer, preliminary or final injunctive relief, penalties, or damages relating to a Supplemental Enforcement Matter within five working days after receipt.
(e) A Supplemental Enforcer or Public Prosecutor who agrees to a settlement of a Supplemental Enforcement Matter shall serve the settlement upon the Attorney General within two working days after the agreement is signed by the parties. Where the settlement is submitted to a court for its approval, the Supplemental Enforcer or Public Prosecutor shall notify the court in writing upon presentation of the settlement of its submission to the Attorney General pursuant to this regulation. The submission to the Attorney General shall contain the entire agreement between the parties.
(f) When this section requires that any document or information be provided to the Attorney General, service shall be in a manner prescribed by Code of Civil Procedure s 1010 et seq. The envelope in which the document is transmitted shall state prominently "Hazard Communication Standard/Proposition 65 Supplemental Enforcement Matter." The Attorney General may then specify that further documents be served upon a particular office and deputy.
(g) The special procedures set forth in subsections (a) through (f) shall be followed for motions or other applications for judicial enforcement of any existing or future settlement agreements pertaining to Proposition 65, with reference to occupational exposures.
(h) Where, in the judgment of the Director and the Attorney General, a Supplemental Enforcer or Public Prosecutor has not complied with the provisions of this section, or the provisions of the OSHA approval decision of June 6, 1997, the Attorney General may seek to intervene in the action, or take such actions within his authority as he deems appropriate to assure compliance.




Note: Authority cited: Sections 54, 55 and 6380, Labor Code; and 62 Fed. Reg. 31159 (June 6, 1997). Reference: Sections 54, 55 and 6380, Labor Code; and 62 Fed. Reg. 31159 (June 6, 1997).







s 339. The Hazardous Substances List.
(a) Purpose. The following is the List of Hazardous Substances prepared by the Director pursuant to Labor Code Section 6380. The substances on this list are subject to the provisions of Labor Code Sections 6360 through 6399.7 and Section 5194 in Title 8 of the California Code.
(b) Definitions.

(1) CAS number means the unique identification number assigned by the Chemical Abstracts Service to specific chemical substances.
(2) Source means the sublists which the Director used in preparing the Hazardous Substances List pursuant to Labor Code 6382. The source(s) of each hazardous substance on the list is designated by a number in the middle column of the list. The numbers represent the following sources: (1) International Agency for Research on Cancer (IARC); (2) Environmental Protection Agency lists pursuant to the Clean Air and Clean Water Acts; (3) General Industry Safety Order Section M155; (4) California Department of Pesticide Regulation's list of Restricted Materials; (5) Information Alerts put out by the Hazard Evaluation and Information Service pursuant to Labor Code Section 147.2.
(3) Synonym means an entry in the list which refers to another entry. This type of entry may identify alternate names for a given substance or associate a particular substance with a class of substances. Synonyms appear in the list as entries of the form: Substance x; see Substance y. The synonym entries included in this list are not all inclusive.
HAZARDOUS SUBSTANCES LIST [FNa1]

[FNa1] An MSDS is not required for tapes, films, or extruded, molded or coated products containing listed hazardous substances in bound form except when these substances can be released in the workplace under normal conditions of work or in reasonably foreseeable emergencies resulting from workplace operations.

CAS No. Source Substance Footnotes
26148685 1 A-alpha-C (2-Amino-9H
pyrido[2,3-b]indole)
3688537 1 AF-2 ([2-(2-Furyl)-3
(5-nitro-2-furyl)] acrylamide)
86884 3 ANTU; see 1-(1-Naphthyl)-2
thiourea
83329 2 Acenaphthene
75070 1,2,3 Acetaldehyde
60355 1 Acetamide
64197 2,3 Acetic acid [FN1]
108247 2,3 Acetic anhydride
67641 3 Acetone
75865 2 Acetone cyanohydrin

75058 3 Acetonitrile
81812 3 3-(alpha-Acetonylbenzyl)-4
hydroxycoumarin; see Warfarin


CAS No. Source Substance Footnotes
53963 3 2-Acetylaminofluorene
506967 2 Acetyl bromide
79367 2 Acetyl chloride
74862 3 Acetylene
540590 2,3 Acetylene dichloride
79276 3 Acetylene tetrabromide
79345 1,3 Acetylene tetrachloride
50782 3 Acetylsalicylic acid [FN37]
107028 2,3,4 Acrolein
79061 1,3 Acrylamide
79107 3 Acrylic acid
107131 1,2,3,4 Acrylonitrile
50760 1 Actinomycin D
124049 2 Adlpic acid

23214928 1 Adriamycin
1 Aflatoxins
116063 4 Aldicarb
51285 2 Aldifen; see Dinitrophenols
309002 1,2,3,4 Aldrin
107186 2,3,4 Allyl alcohol
107051 2,3 Allyl chloride
106923 3 Allyl glycidyl ether [FN12]
57067 1 Allyl isothiocyanate
2835394 1 Allyl isovalerate
2179591 3 Allyl propyl disulfide
3 Aluminum [FN3]
3 Aluminum, alkyls
7429905 3 Aluminum metal and oxide
20859738 4 Aluminum phosphide
3 Aluminum pyro powders
3 Aluminum, soluble salts [FN2]
10043013 2 Aluminum sulfate;
see Aluminum, soluble salts
117793 1 2-Aminoanthraquinone
60093 1 para-Aminoazobenzene

97563 1 o-Aminoazotoluene
1300738 3 Aminodimethylbenzene; see Xylidine
92671 1,3 4-Aminodiphenyl [FN31]
75047 2 Aminoethane; see Ethylamine
141435 3 2-Aminoethanol; see Ethanolamine
82280 1 1-Amino-2-methylanthraquinone
91598 3 2-Aminonaphthalene;
see beta-Naphthylamine
712685 1 2-Amino-5-(5-nitro-2furyl)-1,3,4-thiadiazole
121664 1 2-Amino-5-nitrothiazole
504290 3 2-Aminopyridine
504245 4 4-Aminopyridine
1918021 4 4-Amino-3,5,6-trichloropicolinic
acid; see Picloram
2432997 1 11-Aminoundecanoic acid
61825 1,3 Amitrole
7773060 2 Ammate; see Ammonium
sulfamate
7664417 2,3 Ammonia
631618 2 Ammonium acetate
1863634 2 Ammonium benzoate

1066337 2 Ammonium bicarbonate
7789095 2 Ammonium bichromate;
see Chromium compounds
1341497 2 Ammonium bifluoride; see
Flouride and inorganic fluoride
compounds
10192300 2 Ammonium bisulfite
1111780 2 Ammonium carbamate
506876 2 Ammonium carbonate
3012655 2 Ammonium citrate dibasic
12125029 2,3 Ammonium chloride fume
7788989 2 Ammonium chromate;
see Chromium compounds
13826830 2 Ammonium fluoborate
12125018 2 Ammonium fluoride; see Fluoride,
and inorganic fluoride compounds
1336216 2 Ammonium hydroxide [FN29]
6009707 2 Ammonium oxalate
16919190 2 Ammonium silicofluoride
7773060 2,3 Ammonium sulfamate
12135761 2 Ammonium sulfide

10196040 2 Ammonium sulfite
3164292 2 Ammonium tartrate
1762954 2 Ammonium thiocyanate


CAS No. Source Substance Footnotes
628637, 123922, 2,3 Amyl acetate, all isomers
626380, 625161 1 Anabolic steroids
(Androgenic steroids)
62533 1,2,3 Aniline
90040 1,3 o-Anisidine
104949 3 p-Anisidine
191264 1 Anthanthrene
120127 2 Anthracene
7440360 2,3 Antimony [FN3]
2,3 Antimony compounds [FN4]
7647189 2 Antimony pentachloride;
see Antimony compounds
28300745 2 Antimony potassium tartrate;
see Antimony compounds

7789619 2 Antimony tribromide;
see Antimony compounds
10025919 2 Antimony trichloride;
see Antimony compounds
77883564 2 Antimony trifluoride;
see Antimony compounds
1309644 2 Antimony trioxide
140578 1 Aramite [; see 2-(p-tert
Butyphenoxy)isopropyl-2
chloroethyl sulfite)
7440382 1,2,3,4 Arsenic and arsenic compounds [FN32]
1303328 2 Arsenic disulfide;
see Arsenic and arsenic
compounds
1303282 1,2 Arsenic pentoxide; see
Arsenic and arsenic compounds
1327533 1,2 Arsenic trioxide; see
Arsenic and arsenic compounds
1303339 1,2 Arsenic trisulfide; see
Arsenic and arsenic compounds
784421 3 Arsine

1332214 1,2,3 Asbestos [FN5$]
8052424 3 Asphalt (petroleum) fumes [FN6]
50782 3 Aspirin; see Acetylsalicylic acid
1912249 1,3,4 Atrazine
12174117 1 Attapulgite
492808 1 Auramine
12192573 1 Aurothioglucose
320672 1 5-Azacytidine
115026 1 Azaserine
446866 1 Azathioprine
86500 2,3,4 Azinphos methyl; see
O,O-Dimethyl S-(4-oxo
benzotri-azino-3-methyl)
phosphorodithioate
151564 1 Aziridine; see Ethyleneimine
1072522 1 2-(1-Aziridinyl)ethanol
800248 1 Aziridyl benzoquinone
103333 1 Azobenzene
3333526 3 2,2 ' -Azobisisobutyronitrile
decomposition product; see
Tetramethyl succinonitrile

6923224 4 Azodrin; see
3-(Dimethoxyphosphinyloxy)-N
methyl-cis-crotonamide
154938 1 BCNU; see 1,3-bis
(2-Chloroethyl)-1-nitrosourea
2426086 3 BGE; see n-Butyl glycidyl ether
58899 2 BHC; see Hexachlorocyclohexanes
319846 2 alpha-BHC
319857 2 beta-BHC
319869 2 delta-BHC
58899 2 gamma-BHC; see Lindane
86884 3 Bantu; see 1-(1-Naphthyl)-2-thiourea
101279 2 Barban
2,3 Barium, soluble compounds [FN2]
542621 2 Barium cyanide; see
Cyanides, inorganic salts
17804352 3 Benomyl
25057890 4 Bentazon
225514 1 Benz[c]acridine
56553 1,2 Benz [a]anthracene
56553 2 1,2-Benzanthracene; see

Benz[a]anthracene
71432 1,2,3 Benzene


CAS No. Source Substance Footnotes
108907 2,3 Benzene chloride; see
Chlorinated benzenes
123319 3 1,4-Benzenediol; see Hydroquinone
108463 2 1,3-Benzenediol; see Resorcinol
118741 1,4 Benzene hexachloride; see
Chlorinated benzenes
531851, 531862, 1,2,3 Benzidine (and its salts) [FN31]
92875 1 Benzidine-based dyes
205992 1,2 Benzo [b]fluoranthene
205823 1 Benzo[i[fluoranthene
207089 1,2 Benzo[k]fluoranthene
207089 2 11,12 Benzofluoranthene;
see Benzo[k]fluoranthene
205992 2 3,4 Benzofluoranthene; see
Benzo[b]fluoranthene

65850 2 Benzoic Acid [FN7]
71432 3 Benzol; see Benzene
100470 2 Benzonitrile
191242 2 1,12-Benzoperylene
191242 2 Benzo(ghi)perylene; see
1,12-Benzoperylene
50328 1,2 Benzo [a]pyrene
91225 2 Benzo(b)pyridine; see Quinoline
105113 1 para-Benzoquinone dioxime
106514 3 p-Benzoquinone; see Quinone
98077 1 Benzotrichloride
98884 2 Benzoyl chloride
94360 3 Benzoyl peroxide
140114 1 Benzyl acetate
100447 1,2,3 Benzyl chloride
1694093 1 Benzyl violet 4B
7440417 1,2,3 Beryllium [FN34]
7787475 1,2 Berrylium chloride; see
Beryllium compounds
1,2,3 Beryllium compounds
7787497 1,2 Beryllium fluoride; see

Beryllium compounds
7787555 2 Beryllium nitrate; see Beryllium
compounds
141662 4 Bidrin; see 3-Hydroxy
N,N-dimethyl-cis-crotonamide
dimethyl phosphate
92524 3 Biphenyl
2168685 1 Bis(1-aziridinyl)morpholinophosphine
sulphide
111911 2 Bis(2-chloroethoxy) methane
111444 2,3 Bis(2-chloroethyl)ether; see
Chloroalkyl ethers
494031 1 N,N-Bis(2-chloroethyl)-2 -naphthylamine
154938 1 1,3-Bis(2-chloroethyl)-1 -nitrosourea
154938 1 Bischloroethyl nitrosourea;
see 1,3-Bis(2-chloroethyl)
1-nitrosourea
13483186 1 1,2-Bis(chloromethoxy)ethane
56894981 1 1,4-Bis(chloromethoxymethyl)benzene
542881 1,3 Bis(chloromethyl) ether
108601 1 Bis(2-chloro-1-methylethyl) ether

108601 2 Bis(2-chloroisopropyl) ether
115322 1,2 1,1-Bis-(p-chlorophenyl)-2,2,2-
trichloroethanol(dicofol)
137268 3 Bis-(dimethylthiocarbamoyl) disulfide
2238075 3 Bis(2,3-epoxypropyl)ether; see
Diglycidyl ether
117817 2 Bis(2-ethylhexyl) phthalate; see
Phthalate esters
1304821 3 Bismuth telluride; see
Tellurium compounds
11056067 1 Bleomycins
129179 1 Blue VRS
3 Borates, tetra, sodium salts [FN8]
1303862 3 Boron oxide [FN8]
10294334 3 Boron tribromide
7637072 3 Boron trifluoride
3844459 1 Brilliant Blue FCF
314409 3 Bromacil
7726956 3 Bromine
7789302 3 Bromine pentafluoride
74975 3 Bromochloromethane

75274 2 Bromodichloromethane
74964 3 Bromoethane; see Ethyl bromide
593602 3 Bromoethylene; see Vinyl bromide
75252 2,3 Bromoform


CAS No. Source Substance Footnotes
74839 3 Bromomethane; see Methyl bromide
101553 2 4-Bromophenyl phenyl ether
75638 3 Bromotrifluoromethane
1689845 4 Bromoxynil
106990 1,2,3 1,3-Butadiene
106978 3 Butane
55981 1 1,4-Butanediol dimethanesulfonate
(Busulfan)
109795 3 Butanethiol; see n-Butyl mercaptan
71363 3 Butanol; see Butyl alcohol
78933 3 2-Butanone
123739 2 2-Butenal propylene aldehyde; see
Crotonaldehyde

2426086 3 1-Butoxy-2,3-epoxypropane; see
n-Butyl glycidyl ether
111762 3 2-Butoxyethanol; see Ethylene
glycol monobutyl ether
123864, 2,3 Butyl acetate, all isomers
105464,
540885,
110190
141322 3 Butyl acrylate
71363, 3 Butyl alcohol
78922,
75650
109739, 2,3 Butylamine, all isomers
78819,
513495,
13952846,
75649
25013165 1 Butylated hydroxyanisole
128370 1 Butylated hydroxytoluene; see 2,6-Di
tert-butyl-p-cresol
85687 2 Butyl benzyl phthalate

299865 3 4-tert-Butyl-2-chlorophenylmethyl
methylphosphoramidate
1189851 3 tert-Butyl chromate; see Chromium
compounds
2426086 3 n-Butyl glycidyl ether [FN12]
138227 3 n-Butyl lactate
109795 3 n-Butyl mercaptan
89725 3 o-sec-Butylphenol
140578 1 2-(p-tert-Butylphenoxy)isopropyl
2-chloroethyl sulfite
84742 2 n-Butyl phthalate; see Phthalate esters
98511 3 p-tert-Butyltoluene
107926 2 Butyric acid
3068880 1 beta-Butyrolactone
13010474 1 CCNU; see 1-(2-Chloroethyl)-3
cyclohexyl-1-nitrosourea
543908 1,2 Cadmium acetate; see Cadmium
compounds
7440439,
1306190 1,2,3,4 Cadmium and cadmium oxide [FN3]
7789426 2 Cadmium bromide; see Cadmium

compounds
10108642 1,2 Cadmium chloride; see Cadmium
compunds
1,2,3,4 Cadmium compounds
7440702 2 Calcium
7778441 1,2,3 Calcium arsenate; see Arsenic and arsenic
compounds
52740166 2 Calcium arsenite; see Arsenic and arsenic
compounds
75207 2 Calcium carbide
13765190 1,2 Calcium chromate; see Chromium
compounds
156627 3 Calcium cyanamide
592018 2,4 Calcium cyanide; see Cyanides, inorganic
salts
26264062 2 Calcium dodecylbenzene-sulfonate [FN9]
1305620 3 Calcium hydroxide
7778543 2 Calcium hypochlorite
1305788 3 Calcium oxide
76222 3 Camphor
56257 1 Cantharidin

105602 3 Caprolactam
2425061 1,3 Captafol
133062 1,2,3 Captan
63252 2,3,4 Carbaryl
86748 1 Carbazole
7786347 2,3,4 alpha-2-Carbomethoxy-1-methylvinyl
dimethyl phosphate(mevinphos)
7786347 3 2-Carbomethoxy-l-propen-2-yl
dimethyl phosphate; see alpha-2
Carbomethoxy-l-methylvinyl
dimethyl phosphate
75150 2,4 Carbon bisulfide; see Carbon disulfide
1333864 1,3 Carbon black-Extracts [FN10]


CAS No. Source Substance Footnotes
124389 3 Carbon dioxide
75150 2,3,4 Carbon disulfide
630080 3 Carbon monoxide
558134 3 Carbon tetrabromide

56235 1,2,3,4 Carbon tetrachloride
75445 2,3 Carbonyl chloride; see Phosgene
353504 3 Carbonyl Fluoride
786196 4 Carbophenothion
154938 1 Carmoisine; see 1,3-Bis(2-chloro
ethyl)-1-nitrosourea
120809 3 Catechol
1310732 3 Caustic soda; see Sodium hydroxide
110805 5 Cellosolve; see Ethylene glycol mono
#yl ether
21351791 3 Cesium hydroxide
305033 1 Chlorambucil
56757 1 Chloramphenicol
57749 1,2,3,4 Chlordane
143500 1,2 Chlordecone
6164983 4 Chlordimeform
115286 1 Chlorendic acid
470906 4 Chlorfenvinphos
1,2,3 Chlorinated benzenes
8001352 3 Chlorinated camphene; see Toxaphene
2 Chlorinated cresols

55720995 3 Chlorinated diphenyl oxide
2 Chlorinated ethanes
2 Chlorinated naphthalenes, (other than
those listed elsewhere)
108171262 1 Chlorinated paraffins
2 Chlorinated phenols; see Chlorinated
cresols
1 a-Chlorinated toluenes
7782505 2,3 Chlorine
10049044 3 Chlorine dioxide
7790912 3 Chlorine trifluoride
494031 1 Chlornaphazine; see N,N-bis(2
Chloroethyl)-2-naphthylamine
107200 3 Chloroacetaldehyde
532274 3 alpha-Chloroacetophenone
79049 3 Chloroacetyl chloride
1,2,3 Chloroalkyl ethers
108907 2,3 Chlorobenzene; see
Chlorinated benzenes
510156 1 Chlorobenzilate
2698411 3 o-Chlorobenzylidene-malononitrile

74975 3 Chlorobromomethane; see
Bromochloromethane
126998 3 2-Chloro-1,3-butadiene; see
Chloroprene
124481 2 Chlorodibromomethane
75456 1,3 Chlorodifluoromethane (FC-22)
53449219 3 Chlorodiphenyl; see Polychlorobiphenyls
106898 3 1-Chloro-2,3,-epoxypropane; see
Epichlorohydrin
75003 2,3 Chloroethane; see Ethyl chloride
107073 3 2-Chloroethanol; see Ethylene
chlorohydrin
13010474 1 1-(2-Chloroethyl)-3-cyclohexyl-1nitrosourea
75014 3 Chloroethylene; see Vinyl chloride
13909096 1 1-(2-Chloroethyl)-3-(4-methycyclo
hexyl)-1-nitrosourea (Methyl
-CCNU)
110758 2 2-Chloroethyl vinyl ether
593704 1 Chlorofluoromethane
67663 1,2,3 Chloroform
75445 2 Chloroformyl chloride; see Phosgene

59507 2 para-Chloro-meta-cresol
74873 3 Chloromethane; see Methyl chloride
107302 3 Chloromethyl methyl ether; see Methyl
chloromethyl ether
91587 2 2-Chloronaphthalene
100005 3 1-Chloro-4-nitrobenzene; see p
Nitrochlorobenzene
600259 3 1-Chloro-1-nitropropane
76153 3 Chloropentafluoroethane
95578 2 2-Chlorophenol; see Chlorophenols
1 Chlorophenols
1 Chlorophenoxy herbicides
95830 1 4-Chloro-o-phenylenediamine
7005723 2 4-Chlorophenyl phenyl ether
76062 3,4 Chloropicrin
126998 2,3 Chloroprene


CAS No. Source Substance Footnotes
1331288 3 o-Chlorostyrene

7790945 2 Chlorosulfonic acid
1897456 1 Chlorothalonil
95498 3 o-Chlorotoluene
100447 3 alpha-Chlorotoluene; see Benzyl chloride
95692 1 p-Chloro-o-toluidine
7745893 4 3-Chloro-p-toluidine hydrochloride
1929824 3 2-Chloro-6-(trichloromethyl) pyridine
75887 1 2-Chloro-1,1,1-trifluoroethane
2921882 2,3 Chlorpyrifos
1066304 2 Chromic acetate; see Chromium
compounds
11115745 2 Chromic acid; see Chromium compounds
10101538 2 Chromic sulfate; see Chromium
compounds
7440473 2,3 Chromium [FN3]
1,2,3 Chromium compounds
7440473 3 Chromium metal; see Chromium
11115745 2 Chromium troixide; see Chromium
compounds
10049055 2 Chromous chloride; see Chromium
compounds

14977618 3 Chromyl chloride;
218019 1,2 Chrysenes; see Polynuclear aromatic
hydrocarbons
532821 1 Chrysoidine
87296 1 Cinnamyl anthranilate
108316 2,3 Cis-butenedioic anhydride; see Maleic
anhydride
15663271 1 Cisplatin
51875 1 Citrinin
6358538 1 Citrus Red no. 2
637070 1 Clofibrate
1420048 4 Clonitralid
2971906 3 Clopidol
3 Coal (Bituminous) dust
65996932 1 Coal-tar pitches
8007452 1,3 Coal tar pitch volatiles [FN11]
7440484 2,3 Cobalt [FN3], [FN34]
10210681 3 Cobalt carbonyl
16842038 3 Cobalt hydrocarbonyl
7789437 2 Cobaltous bromide
544183 2 Cobaltous formate

14017415 2 Cobaltous sulfamate
62748 4 Compound 1080; see Sodium
fluoroacetate
7440508 2,3 Copper [FN3]
2,3 Copper compounds [FN39]
3 Cotton dust [FN27]
56724 2 Coumaphos
91645 1 Coumarin
8001589 1 Creosotes
120718 1 p-Cresidine
95487, 106445, 2,3 Cresol (all isomers)
108394,1319773
123739 2,3 Crotonaldehyde
299865 3 Crufomate; see 4-tert-Butyl (-2-chlor
ophenylmethyl) methylphos
phoramidate
98828 3 Cumene
142712 2 Cupric acetate; see Copper compounds
12002038 2 Cupric acetoarsenite; see Copper
compounds
7447394 2 Cupric chloride; see Copper compounds

3251238 2 Cupric nitrate; see Copper compounds
5893663 2 Cupric oxalate; see Copper compounds
10380297 2 Cupric sulfate, ammoniated; see Copper
compounds
7758987 2 Cupric sulfate; see Copper compounds
815827 2 Cupric tartrate; see Copper compounds
420042 3 Cyanamide
2,3,4 Cyanides, inorganic salts
100470 2 Cyanobenzene; see Benzonitrile
460195 3 Cyanogen
506774 2,3 Cyanogen chloride
14901087 1 Cycasin
1 Cyclamates
110827 2,3 Cyclohexane
108930 3 Cyclohexanol
108941 3 Cyclohexanone
110838 3 Cyclohexene
66819 4,5 Cycloheximide
108918 3 Cyclohexylamine




CAS No. Source Substance Footnotes
121824 3 Cyclonite; see
Cyclotrimethylenetrinitramine
542927 3 Cyclopentadiene
12079651 3 Cyclopentadienyltriocarbonyl
manganese;
see Manganese compounds
287923 3 Cyclopentane
27208373 1 Cyclopenta[c,d]pyrene
50180 1 Cyclophosphamide
6055192
121824 3 Cyclotrimethylene-trinitramine
13121705 3 Cyhexatin; see Tin compounds
94757 2,3,4 2,4-D
94111, 2 2,4-D esters (2,4-dichloro
94791,
94804,
1320189, phenoxyacetic acid esters)
1928387,
1928616,

1929733,
2971382,
25168267,
53467111
94826 4 2,4-DB (2,4-dichloro- phenoxybutyric acid)
72548 2,4 DDD; see TDE
72548 2 4,4-DDD; see TDE
72559 2 DDE; see 1,1-Dichloro-2,2-bis(p
chlorophenyl)-ethylene
72559 2 4,4-DDE; see 1,1-Dichloro-2,2-bis(p
chlorophenyl)-ethylene
120365 4 2,4-DP (2,4-dichlorophenoxy-propionic acid)
50293 1,2,3,4 DDT-(1,1,1-trichloro-2,2-bis
(p-chlorophenyl)ethane)
50293 2 4,4-DDT; see DDT
62737 3 DDVP; see Dichlorvos
78488 4 DEF; see S,S,S Tributyl
phosphorotrithioate
2238075 3 DGE; see Diglycidyl ether
68122 3 DMF; see N,N-Dimethylformamide
57147 3 DMH; see Dimethylhydrazine (all

isomers)
81889 1 D&C Red No. 19; see Rhodamine B
432034 1 Dacarbazine
80080 1 Dapsone
115902 4 Dasanit; see O,O-Diethyl O-[4
(methylsulfinyl) phenyl]
phosphorothioate
20830813 1 Daunomycin
17702419 3 Decaborane
8065483 3,4 Demeton
298033 2 Demeton-O
126750 2 Demeton-S
123422 3 Diacetone alcohol; see 4-Hydroxy
4-methyl-2-pentanone
613354 1 N,N ' -Diacetylbenzidine
10311849 4 Dialifor
2303164 1 Diallate
615054 1 2,4-Diaminoanisole
39156417 1 2,4-Diaminoanisole sulfate
92875 3 4,4 ' -Diaminobiphenyl; see Benzidine
(and its salts)

91941 3 4,4 ' Diamino-3,3 ' -dichlorobiphenyl;
see Dichlorobenzidine and its salts
101814 1 4,4 ' -Diaminodiphenyl ether
107153 2,3 1,2-Diaminoethane; see Ethylenediamine
95807 1 2,4-Diaminotoluene
119904 1 ortho-Dianisidine; see 3,3-Dimethoxy
benzidine
333415 2,3 Diazinon
334883 1,3 Diazomethane
226368 1 Dibenz [a,h]acridine
224420 1 Dibenz [a,j]acridine
53703 1,2 Dibenz [a,h]anthracene
215587 1 Dibenz[a,c]anthracene
224419 1 Dibenz[a,j]anthracene
53703 2 1,2,5,6-Dibenzanthracene; see
Dibenz[a,h] anthracene
1,2 Dibenzanthracenes; see Polynuclear
aromatic hydrocarbons
194592 1 7H-Dibenzo [c,g]carbazole
5385751 1 Dibenzo[a,e]fluoranthene
192472 1 Dibenzo[h,rst]pentaphene

192654 1 Dibenzo [a,e]pyrene
189640 1 Dibenzo [a,h]pyrene
189559 1 Dibenzo [a,i]pyrene
191300 1 Dibenzo[a,l]pyrene
92842 3 Dibenzothiazine; see Phenothiazine


CAS No. Source Substance Footnotes
94360 3 Dibenzoyl Perozide; see Benzoyl
peroxide
19287457 3 Diborane
300765 2 Dibrom; see O,O-Dimethyl O
(1,2-dibromo-2,2-dichloroethyl)
phosphate
96128 1,3 1,2-Dibromo-3-chloropropane
75616 3 Dibromodifluoromethane
106934 2,3 1,2-Dibromoethane; see Ethylene
dibromide
102818 3 2-(Dibutylamino) ethanol
128370 1,3 2,6-Di-tert-butyl-p-cresol [FN7]

107664 3 Dibutyl phosphate
84742 3 Dibutyl phthalate; see Phthalate esters
84742 2 Di-n-butyl phthalate; see Phthaltate
esters
1918009 2,4 Dicamba
1194656 2 Dichlobenil
117806 2 Dichlone
7572294 1,3 Dichloroacetylene
541731 2 m-Dichlorobenzene
106467 1,2,3 p-Dichlorobenzene
95501 2,3 o-Dichlorobenzene
95501 2 1,2-Dichlorobenzene; see o
Dichlorobenzene
541731 2 1,3-Dichlorobenzene; see m
Dichlorobenzene
106467 2 1,4-Dichlorobenzene; see p
Dichlorobenzene
225321226 1,2,3 Dichlorobenzenes; see Chlorinated
benzenes
1,2,3 Dichlorobenzidine (and its salts)
91941 1,2,3 3,3 ' -Dichlorobenzidine; see

Dichlorobenzidene (and its salts)
72548 2 1,1-Dichloro-2,2-bis(p-chlorophenyl)
ethane; see TDE
72559 2,4 1,1-Dichloro-2,2-bis (p-chlorophenyl) ethylene
75274 2 Dichlorobromomethane; see
Bromodichloromethane
28434868 1 3,3 ' -Dichloro-4,4 ' -diaminodiphenyl ether
75718 3 Dichlorodifluoromethane (FC-12)
118525 3 1,3-Dichloro-5,5-dimethyl-hydantoin
107062 1,2 1,2-Dichloroethane; see Ethylene
dichloride
75343 2,3 1,1-Dichloroethane; see Ethylidene
chloride
156605 2 1,2-trans-Dichloroethylene
540590 2,3 1,2-Dichloroethylene; see Acetylene
dichloride
75354 2,3 1,1 Dichloroethylene; see Vinylidene
chloride
111444 ,1,3 Dichloroethyl ether; see Chloroaikyl
ethers
75092 3 Dichloromethane; see Methylene chloride

75434 3 Dichloromonofluoromethane (FC-21)
117806 2 Dichloronaphthoquinone; see Dichlone
594729 3 1,1-Dichloro-1-nitroethane
120832 2 2,4-Dichlorophenol
94757 2,3,4 2,4-Dichlorophenoxyacetic acid; see
2,4-D
609201 1 2,6-Dichloro-para-phenylenediamine
1836755 1,4 2,4-Dichlorophenyl p-nitrophenyl ether
26638197, 1,2,3Dichloropropanes (continued)