Some TRI chemicals that are suspected or recognized carcinogens are not included in Scorecard's cancer risk estimates for 1998 air releases from manufacturing facilities. In some cases, this is because the physical-chemical data EPA requires to estimate exposure with its Risk-Screening Environmental Indicators model are unavailable. In other cases, inhalation cancer potency values are currently unavailable.
While 208 carcinogens were reported released to air in 1998, only 176 have sufficient data to be modeled by EPA's Indicators software. However, these compounds constitute over 99.7% percent of the total mass of carcinogens released to air in 1998. Toxicity data are missing for 31 carcinogens which have exposure data. These compounds constitute 69% percent of the total mass of carcinogens released to air in 1998. Two of these 31 carcinogens, STYRENE and SULFURIC ACID, constitute 66% of the total mass of suspected carcinogens released to air in 1998.
The following lists identify the TRI chemicals with reported 1998 releases to air that cannot currently be subjected to cancer risk assessment.
TRI RECOGNIZED CARCINOGENS LACKING EPA EXPOSURE DATA
1,1'-BI(ETHYLENE OXIDE)
2,6-XYLIDINE
2-ACETYLAMINOFLUORENE
3,3'-DICHLOROBENZIDINE DIHYDROCHLORIDE
3-CHLORO-2-METHYL-1-PROPENE
4,4'-METHYLENEDIANILINE
ACETAMIDE
BIS(2-CHLORO-1-METHYLETHYL) ETHER
C.I. DIRECT BLUE 218
CHLORENDIC ACID
CREOSOTES
DIGLYCIDYL RESORCINOL ETHER (DGRE)
DIHYDROSAFROLE
DIMETHYL SULFATE
DIMETHYLCARBAMOYL CHLORIDE
ETHYLENEIMINE
N-METHYLOLACRYLAMIDE
P-NITROSODIPHENYLAMINE
PHENYTOIN
POTASSIUM BROMATE
SACCHARIN
SAFROLE
STYRENE OXIDE
TRANS-1,3-DICHLOROPROPENE
URETHANE
TRI SUSPECTED CARCINOGENS LACKING EPA EXPOSURE DATA
BENZAL CHLORIDE
BENZOYL CHLORIDE
C.I. DISPERSE YELLOW 3
DINITROTOLUENE (MIXED ISOMERS)
NABAM
PIPERONYL BUTOXIDE
POLYCHLORINATED ALKANES (C10-C13)
TRI RECOGNIZED CARCINOGENS LACKING CANCER RISK ASSESSMENT VALUE
1,1-DICHLOROETHANE
2-CHLOR-1,3-BUTADIENE
4,4'-DIAMINODIPHENYL ETHER
CHLOROETHANE
CHLOROMETHYL METHYL ETHER
COBALT
DIETHYL SULFATE
ETHYL ACRYLATE
FOLPET
LEAD
LEAD COMPOUNDS
METHYL HYDRAZINE
METHYL IODIDE
MICHLER'S KETONE
NICKEL
NITRILOTRIACETIC ACID
NITROBENZENE
O-ANISIDINE
P-CRESIDINE
PROPYLENEIMINE
PROPACHLOR
THIOUREA
TOLUENE DIISOCYANATE (MIXED ISOMERS)
TOLUENE-2,4-DIISOCYANATE
TOLUENE-2,6-DIISOCYANATE
TRI SUSPECTED CARCINOGENS LACKING CANCER RISK ASSESSMENT VALUE
STYRENE
SULFURIC ACID
