3,3'-Dichlorobenzidine (and its salts)
Synonyms & Trade Names4,4'-Diamino-3,3'-dichlorobiphenyl, Dichlorobenzidine base, o,o'-Dichlorobenzidine, 3,3'-Dichlorobiphenyl-4,4'-diamine, 3,3'-Dichloro-4,4'-biphenyldiamine, 3,3'-Dichloro-4,4'-diaminobiphenyl
DOT ID & Guide
See: IDLH INDEX
Physical DescriptionGray to purple, crystalline solid.
Upper Exposive Limit?
Lower Explosive Limit?
Incompatibilities & ReactivitiesNone reported
Exposure Routesinhalation, skin absorption, ingestion, skin and/or eye contact
SymptomsSkin sensitization, dermatitis; headache, dizziness; caustic burns; frequent urination, dysuria; hematuria (blood in the urine); gastrointestinal upset; upper resp infection; [potential occupational carcinogen]
Target OrgansBladder, liver, lung, skin, gastrointestinal tract
Cancer Site[in animals: liver & bladder cancer]
Personal Protection/Sanitation(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated/Daily
Remove:When wet or contaminated
Provide:Eyewash, Quick drench
First Aid(See procedures)
Skin:Soap wash immediately
Swallow:Medical attention immediately
At concentrations above the NIOSH REL, or where there is no REL, at any detectable concentration:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus
(APF = 50) Any air-purifying, full-facepiece respirator with an N100, R100, or P100 filter.
Click here for information on selection of N, R, or P filters.
Any appropriate escape-type, self-contained breathing apparatus
- Page last reviewed:April 11, 2016
- Page last updated:April 11, 2016
- Content source:
- National Institute for Occupational Safety and Health (NIOSH) Education and Information Division