CCL 4 Chemical Contaminants
|
Chemical Name
|
CASRN1
|
Use
|
|---|---|---|
|
1,1-Dichloroethane
|
75-34-3 | Industrial solvent and intermediate in the synthesis of other compounds. |
|
1,1,1,2-Tetrachloroethane
|
630-20-6
|
Industrial solvent used in the synthesis of other chlorinated compounds.
|
|
1,2,3-Trichloropropane
|
96-18-4
|
Industrial solvent, cleaning and degreasing agent as well as an intermediate in the synthesis of the other compounds.
|
|
1,3-Butadiene
|
106-99-0
|
Used in the production of rubber and plastics.
|
|
1,4-Dioxane
|
123-91-1
|
Solvent for cellulose formulations, resins, oils, waxes and other organic substances. It is also used in wood pulping, textile processing, degreasing, in lacquers, paints, varnishes, and stains; and in paint and varnish removers.
|
|
17alpha-estradiol
|
57-91-0
|
Estrogenic hormone found in some pharmaceuticals.
|
|
1-Butanol
|
71-36-3
|
Solvent used in production of other chemicals. Present in a number of commercial products such as perfumes.
|
|
2-Methoxyethanol
|
109-86-4
|
Used in a number of consumer products, such as synthetic cosmetics, perfumes, fragrances, hair preparations, and skin lotions.
|
|
2-Propen-1-ol
|
107-18-6
|
Used in the production of other chemicals.
|
|
3-Hydroxycarbofuran
|
16655-82-6
|
Pesticide degradate; its parent chemical, carbofuran, is used as an insecticide.
|
|
4,4'-Methylenedianiline
|
101-77-9
|
Used in the production of polyurethanes foams, glues, rubber and spandex fiber.
|
|
Acephate
|
30560-19-1
|
Insecticide.
|
|
Acetaldehyde
|
75-07-0
|
Disinfection byproduct from ozonation; used in the production of other chemicals.
|
|
Acetamide
|
60-35-5
|
Solvent and plasticizer.
|
|
Acetochlor
|
34256-82-1
|
Herbicide for weed control on agricultural crops.
|
|
Acetochlor ethanesulfonic acid (ESA)
|
187022-11-3
|
Environmental degradate of acetochlor.
|
|
Acetochlor oxanilic acid (OA)
|
194992-44-4
|
Environmental degradate of acetochlor.
|
|
Acrolein
|
107-02-8
|
Aquatic herbicide, rodenticide and industrial chemical.
|
|
Alachlor ethanesulfonic acid (ESA)
|
142363-53-9
|
Environmental degradate of alachlor (an herbicide for weed control on agricultural crops).
|
|
Alachlor oxanilic acid (OA)
|
171262-17-2
|
Environmental degradate of alachlor.
|
|
alpha-Hexachlorocyclohexane
|
319-84-6
|
Component of benzene hexachloride (BHC), formerly used as an insecticide.
|
|
Aniline
|
62-53-3
|
Industrial chemical used as a solvent and in the synthesis of explosives, rubber products and in isocyanates.
|
|
Bensulide
|
741-58-2
|
Herbicide.
|
|
Benzyl chloride
|
100-44-7
|
Production of other substances, such as plastics, dyes, lubricants, gasoline and pharmaceuticals.
|
|
Butylated hydroxyanisole
|
25013-16-5
|
Food additive (antioxidant).
|
|
Captan
|
133-06-2
|
Fungicide.
|
|
Chlorate
|
14866-68-3
|
Used in agriculture as defoliants or desiccants and may occur in drinking water because of use of disinfectants such as chlorine dioxide and hypochlorites.
|
|
Chloromethane (Methyl chloride)
|
74-87-3
|
Used as a foaming agent and in the production of other substances.
|
|
Clethodim
|
110429-62-4
|
Herbicide.
|
|
Cobalt
|
7440-48-4
|
Naturally-occurring element and was formerly used as cobaltous chloride in medicines and as a germicide. It is a part of the vitamin B12 molecule
|
|
Cumene hydroperoxide
|
80-15-9
|
Catalyst in the production of other substances.
|
|
Cyanotoxins
|
Not applicable.
|
Toxins naturally produced and released by cyanobacteria ("blue-green algae"). The group of cyanotoxins includes, but is not limited to: anatoxin-a, cylindrospermopsin, microcystins, and saxitoxin.
|
|
Dicrotophos
|
141-66-2
|
Insecticide.
|
|
Dimethipin
|
55290-64-7
|
Herbicide and plant growth regulator.
|
|
Diuron
|
330-54-1
|
Herbicide.
|
|
Equilenin
|
517-09-9
|
Estrogenic hormone used in hormone replacement therapy.
|
|
Equilin
|
474-86-2
|
Estrogenic hormone and is used in hormone replacement therapy.
|
|
Erythromycin
|
114-07-8
|
Antibiotic.
|
|
Estradiol (17-beta estradiol)
|
50-28-2
|
Isomer of estradiol found in some pharmaceuticals.
|
|
Estriol
|
50-27-1
|
Weak estrogenic hormone used in veterinary pharmaceuticals.
|
|
Estrone
|
53-16-7
|
Precursor of estradiol used in veterinary and human pharmaceuticals.
|
|
Ethinyl estradiol (17-alpha ethynyl estradiol)
|
57-63-6
|
Estrogenic hormone used in veterinary and human oral contraceptives.
|
|
Ethoprop
|
13194-48-4
|
Insecticide.
|
|
Ethylene glycol
|
107-21-1
|
Used as antifreeze, in textile manufacturing and is a cancelled pesticide.
|
|
Ethylene oxide
|
75-21-8
|
Fungicidal and insecticidal fumigant.
|
|
Ethylene thiourea
|
96-45-7
|
Used in the production of other substances, such as for vulcanizing polychloroprene (neoprene) and polyacrylate rubbers and is a metabolite of some fungicides.
|
|
Formaldehyde
|
50-00-0
|
Ozoneation disinfection byproduct, can occur naturally and has been used as a fungicide.
|
|
Germanium
|
7440-56-4
|
Naturally occurring element commonly found as germanium dioxide in phosphors, transistors and diodes, and in electroplating. In some cases, it has been sold as a dietary supplement.
|
|
HCFC-22
|
75-45-6
|
Used as a refrigerant, as a low-temperature solvent, and in fluorocarbon resins, especially in tetrafluoroethylene polymers. |
| Halon 1011 (bromochloromethane) | 74-97-5 |
Used as a fire-extinguishing fluid and to suppress explosions, as well as a solvent in the manufacturing of some pesticides. May also occur as a disinfection by-product in drinking water.
|
|
Hexane
|
110-54-3
|
Component of gasoline and used as a solvent.
|
|
Hydrazine
|
302-01-2
|
Used in the production of other substances, such as rocket propellants. It is also used in the production of plastics.
|
|
Manganese
|
7439-96-5
|
Naturally occurring element used in a variety of applications including use in steel production to improve hardness, stiffness and strength. It is an essential nutrient found in vitamin/mineral supplement and in fortified foods.
|
|
Mestranol
|
72-33-3
|
Precursor to ethinylestradiol used in veterinary and human pharmaceuticals.
|
|
Methamidophos
|
10265-92-6
|
Insecticide.
|
|
Methanol
|
67-56-1
|
Used as an industrial solvent, a gasoline additive and as an anti-freeze ingredient.
|
|
Methyl bromide (bromomethane)
|
74-83-9
|
Used as a fumigant and fungicide.
|
|
Methyl tert-butyl ether (MTBE)
|
1634-04-4
|
Used as an octane booster in gasoline, in the manufacturing of isobutene and as an extraction solvent.
|
|
Metolachlor
|
51218-45-2
|
Herbicide for weed control on agricultural crops.
|
|
Metolachlor ethanesulfonic acid (ESA)
|
171118-09-5
|
Environmental degradate of metolachlor.
|
|
Metolachlor oxanilic acid (OA)
|
152019-73-3
|
Environmental degradate of metolachlor.
|
|
Molybdenum
|
7439-98-7
|
Naturally occurring element commonly found as molybdenum trioxide. Used as a steel alloy. Is an essential dietary nutrient found in foods and nutritional supplements.
|
|
Nitrobenzene
|
98-95-3
|
Used in the production of aniline, and also as a solvent in the manufacturing of paints, shoe polishes, floor polishes, metal polishes, explosives, dyes, pesticides and drugs (such as acetaminophen).,
|
|
Nitroglycerin
|
55-63-0
|
Used in the production of explosives, and in rocket propellants. It is also a pharmaceutical for the treatment of angina.
|
|
N-Methyl-2-pyrrolidone
|
872-50-4
|
Used as a solvent in the chemical industry, and in the formulation of pharmaceuticals for oral and dermal delivery.
|
|
N-nitrosodiethylamine (NDEA)
|
55-18-5
|
Used as an additive in gasoline and in lubricants, as an antioxidant and as a stabilizer in plastics. It is formed in cured foods and during high temperature cooking of meats and fish, and may be a disinfection byproduct.
|
|
N-nitrosodimethylamine (NDMA)
|
62-75-9
|
Formerly used in the production of rocket fuels, anti-oxidants and softeners for copolymers. It is formed in cured foods and during high temperature cooking. It may be a leachate from rubber gaskets and fittings and may form as a disinfection byproduct.
|
|
N-nitroso-di-n-propylamine (NDPA)
|
621-64-7
|
Forms in cured foods and during high temperature cooking of meats and fish and may be a disinfection byproduct. It is a contaminant in dinitrofluralin herbicides.
|
|
N-Nitrosodiphenylamine
|
86-30-6
|
Used in the vulcanization of rubber and as an inhibitor of polymerization in the production of polystyrene. It may be a disinfection byproduct.
|
|
N-nitrosopyrrolidine (NPYR)
|
930-55-2
|
Used in rubber production. Forms in cured foods and during high temperature cooking of meats and fish and may be a disinfection byproduct.
|
|
Nonylphenol2
|
25154-52-3
|
Manufacture of nonylphenol ethoxylates, which have been used in a wide range of industrial applications and consumer products including laundry detergents, cleaners, degreasers, paints and coatings and other uses. Several other CASRNs are associated with nonyphenol due to varying chemical structures including: 104-40-5, 84852-15-3, 91672-41-2, and 139-84-4.
|
|
Norethindrone (19-Norethisterone)
|
68-22-4
|
Synthetic hormone used in oral contraceptives and for hormone replacement therapy.
|
|
n-Propylbenzene
|
103-65-1
|
A constituent of asphalt and naptha and used in the manufacture of methyl styrene. It is a solvent for printing and dying of textiles.
|
|
o-Toluidine
|
95-53-4
|
Used in the production of dyes, rubber, pharmaceuticals and pesticides.
|
|
Oxirane, methyl
|
75-56-9
|
Industrial chemical used in the production of other substances. It is a registered pesticide.
|
|
Oxydemeton-methyl
|
301-12-2
|
Insecticide.
|
|
Oxyfluorfen
|
42874-03-3
|
Herbicide.
|
|
Perfluorooctanesulfonic acid (PFOS)
|
1763-23-1
|
Used to make carpets, leathers, textiles, fabrics for furniture, paper packaging, and other materials that are resistant to water, grease, or stains. It is also used in firefighting foams at airfields. Many of these uses have been phased out by its primary U.S. manufacturer; however, there are still some ongoing uses.
|
|
Perfluorooctanoic acid (PFOA)
|
335-67-1
|
Used to make carpets, leathers, textiles, fabrics for furniture, paper packaging, and other materials that are resistant to water, grease, or stains. It is also used in firefighting foams at airfields. Many of these uses are being phased out by U.S. manufacturers; however, there are still some ongoing uses.
|
|
Permethrin
|
52645-53-1
|
Insecticide.
|
|
Profenofos
|
41198-08-7
|
Insecticide and acaricide.
|
|
Quinoline
|
91-22-5
|
Component of coal tars and used in the production of other substances, and as a pharmaceutical (anti-malarial).
|
|
RDX (Hexahydro-1,3,5-trinitro-1,3,5-triazine)
|
121-82-4
|
Explosive.
|
|
sec-Butylbenzene
|
135-98-8
|
Used as a solvent for coatings in organic synthesis, as a plasticizer and in surfactants.
|
|
Tebuconazole
|
107534-96-3
|
Fungicide.
|
|
Tebufenozide
|
112410-23-8
|
Insecticide.
|
|
Tellurium
|
13494-80-9
|
Naturally occurring element commonly used as sodium tellurite in bacteriology and medicine.
|
|
Thiodicarb
|
59669-26-0
|
Insecticide.
|
|
Thiophanate-methyl
|
23564-05-8
|
Fungicide.
|
|
Toluene diisocyanate
|
26471-62-5
|
Used in the manufacturing of plastics.
|
|
Tribufos
|
78-48-8
|
An insecticide used as a cotton defoliant.
|
|
Triethylamine
|
121-44-8
|
Used in the production of other substances, as a stabilizer in herbicides and pesticides, in consumer products, in photographic chemicals and in carpet cleaners.
|
|
Triphenyltin hydroxide (TPTH)
|
76-87-9
|
Pesticide.
|
|
Urethane
|
51-79-6
|
Paint and coating ingredient (polyurethanes).
|
|
Vanadium
|
7440-62-2
|
Naturally occurring element. Vanadium pentoxide is a catalyst for the production of other substances catalyst. It is sometimes an ingredient in mineral supplements but is not classified as an essential nutrient
|
|
Vinclozolin
|
50471-44-8
|
Fungicide.
|
|
Ziram
|
137-30-4
|
Fungicide.
|
Notes
1 Chemical Abstract Service Registration Number (CASRN#) - Chemical abstract service registry numbers are used in reference works, databases, and regulatory compliance documents by many organizations around the world to identify substances with a standardized name.
2 Due to varying chemical structures, there are several other CASRNs associated with nonylphenol in addition to 25154-52-3, including: 104-40-5, 84852-15-3, 91672-41-2, and 139-84-4. The CASRN provided by the nominator was selected for CCL 4, and the additional possible CASRNs are delineated here.