Chemicals Components of Concern: Carcinogens, Chemicals regulated under Safe Drinking Water Act and Hazardous Air Pollutants

Chemical Component

Chemical Category

CAS registry

No. of Products containing chemical

Methanol (Methyl)

HAP

67-56 -1

342

Ethylene glycol (1,2-

HAP

107-21 -1

119

DieselI

Carcinogen, SDWA, HAP

68476-34 -6

51

Naphthalene

Carcinogen, HAP

91-20-3

44

Xylene

SDWA, HAP

1330-20-7

44

Hydrogen chloride

HAP

7647-01-

42

Toluene

SDWA, HAP

108-88-3

29

Ethylbenzene

SDWA, HAP

100-41-4

28

Diethanolamine (2,2- iminodiethanol)

HAP

111-42-2

14

Formaldehyde

Carcinogen, HAP

50-00-0

12

Sulphuric acid

Carcinogen

7664-93-9

9

Thoreau

Carcinogen

62-56-6

9

Benzyl chloride

Carcinogen, HAP

100-44-7

8

Cumene

HAP

98-82-8

6

Nitrilotriacetic acid

Carcinogen

139-13-9

6

Dimethyl formamide

HAP

68-12-2

5

Phenol

HAP

108-95-2

5

Benzene

Carcinogen, SDWA

71-43-2

3

Di (2-

Carcinogen, SDWA

117-81-7

3

Acrylamide

Carcinogen, SDWA

79-06-1

2

Hydrogen fluoride (Hydrofluoric

HAP

7664-39-3

2

Phthalic anhydride

HAP

85-44-9

2

Acetaldehyde

Carcinogen, HAP

75-07-0

1

Acetophenone

HAP

98-86-2

1

Copper

SDWA

7440-50-

1

Ethylene oxide

Carcinogen, HAP

75-21-8

1

Lead

Carcinogen, SDWA

7439-92-1

1

Propylene oxide

Carcinogen

75-56-9

1

p- Xylene

HAP

106-42-3

1

1- Methylnaphthalene

90-12-0

2- Butanone

78-93-3

Aniline

62-53-3

2- methylphenol

95-48-7

3- Methylphenol

108-39-4

4- Methylphenol

106-44-5

acetonitrile

75-05-8

Phenol

108-95-2

5

Thiophene

110-02-1

Pyrrole

109-97-7

2- Methylnaphthalene

91-57-6

Benzidine

92-87-5

Isophorone

78-59-1

Chloroethane

75-00-3

2- pyrrolidone

616-45-5

vinyl chloride

75-01-4

Bromomethane

74-83-9

4- methylphenol

106-44-5

Acetone

67-64-1

3

2- Hexanone

591-78-6