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33/50 Program Chemical Identities

Source: EPA 1994 Toxics Release Inventory
Public Data Release, Box 4-2


In the tables in this chapter, the 33/50 Program chemicals appear in alphabetical order by organic chemicals followed by inorganic chemicals. Xylenes and the inorganic chemicals have been grouped into categories, as shown below. The 10 individual organic chemicals and the seven groups constitute the 17 high-priority chemicals targeted by the 33/50 Program.

Organic chemicals

71-43-2Benzene
56-23-5Carbon tetrachloride
67-66-3Chloroform
75-09-2Dichloromethane
78-93-3Methyl ethyl ketone
108-10-1Methyl isobutyl ketone
127-18-4Tetrachloroethylene
108-88-3Toluene
71-55-61,1,1-Trichloroethane
79-01-6Trichloroethylene

Xylenes
108-38-3m-Xylene
95-47-6o-Xylene
106-42-3p-Xylene
1330-20-7Xylene (mixed isomers)

Inorganic chemicals*

Cadmium and cadmium compounds
7440-43-9 Cadmium
--Cadmium compounds

Chromium and chromium compounds
7440-47-3Chromium
--Chromium compounds

Cyanide compounds
74-90-8Hydrogen cyanide
--Cyanide compounds

Lead and lead compounds
7439-92-1Lead
--Lead compounds

Mercury and mercury compounds
7439-97-6Mercury
--Mercury compounds

Nickel and nickel compounds
7440-02-0Nickel
--Nickel compounds

* Compound categories do not have CAS numbers (--).

Source: USEPA 1994 Toxics Release Inventory Public Data Release (EPA 745-R-96-002, June 1996).

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