Method Compound Maximum Residue Limit (ppm)
USP <467> Class I
Carcinogenic
Toxic
Environmental hazard
Benzene 2
Carbon tetrachloride 4
1,2-Dichloroethane 5
1,1-Dichloroethene 8
1,1,1-Trichloroethane 1500
USP <467> Class II
Animal carcinogens
Suspected to be toxic
Acetonitrile 410
Chlorobenzene 360
Chloroform 60
Cyclohexane 3880
1,2-Dichloroethene 1870
1,2-Dimethoxyethane 100
1,4-Dioxane 380
Hexane 290
Methanol 3000
Methylbutylketone 50
Methylcyclohexane 1180
Methylene chloride 600
Nitromethane 50
Pyridine 200
Tetrahydrofuran 720
Tetralin 100
Toluene 890
Trichloroethylene 80
Xylene
60% m-xylene, 14% p-xylene
9% o-xylene, 17% ethyl benzene
2170
USP <467> Class III
Low toxic potential
Acetic acid PDE >50mg
Acetone
1-Butanol
tert-Butylmethyl ether
Dimethyl sulfoxide
Ethanol
Ethyl acetate
Ethyl ether
Heptane
Isobutyl acetate
Methyl acetate
1-Pentanol
2-Propanol