Chemical Detail

Chemical Name3,3'-Dimethylbenzidine dihydrochloride
Synonym(s)(1,1'-Biphenyl)-4,4'-diamine, 3,3'-dimethyl-, dihydrochloride | 3,3'-Dimethylbenzidine hydrochloride | 4,4'-bi-o-Toluidine dihydrochloride | Benzidine, 3,3'-dimethyl-, dihydrochloride | NSC 11223 | o-Tolidine dihydrochloride
CASRN612-82-8
De minimis Limit %0.1
M,P/OU Threshould (lb)25,000/10,000
Listing TypeIndividually listed chemical
Effective Date1995-01-01
Chemical QualifierNo
MetalNo
Chemical of Special ConcernNo
Per- or Polyfluoroalkyl SubstanceNo
Structural image
Structural representation of 3,3'-Dimethylbenzidine dihydrochloride

Rulemaking Changes Affecting This Chemical

StatusEffective Reporting YearFR Proposed RuleFR Final Rule
Added199559 FR 1788 (1/12/1994)59 FR 61432 (11/30/1994)

Basis of OSHA Carcinogens

IARCNTPOSHA-Z
2BRA