Synonyms & Trade Names4,4'-Diamino-3,3'-dimethylbiphenyl, Diaminoditolyl, 3,3'-Dimethylbenzidine, 3,3'-Dimethyl-4,4'-diphenyldiamine, 3,3'-Tolidine
DOT ID & Guide
See: IDLH INDEX
NIOSH RELCa C 0.02 mg/m3 [60-minute] [skin] See Appendix A See Appendix C
OSHA PELSee Appendix C
Physical DescriptionWhite to reddish crystals or powder. [Note: Darkens on exposure to air. Often used in paste or wet cake form. Used as a basis for many dyes.]
Upper Exposive Limit?
Lower Explosive Limit?
Incompatibilities & ReactivitiesStrong oxidizers
Exposure Routesinhalation, skin absorption, ingestion, skin and/or eye contact
Symptomsirritation eyes, nose; In Animals: liver, kidney damage; [potential occupational carcinogen]
Target OrgansEyes, respiratory system, liver, kidneys
Cancer Site[in animals: liver, bladder & mammary gland tumors]
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 flush 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 (gas mask) with a chin-style, front- or back-mounted organic vapor canister having 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