3,3'-Dichlorobenzidine (and its salts) |
Synonyms & Trade Names 4,4'-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 |
CAS No. 91-94-1 |
RTECS No. DD0525000 |
DOT ID & Guide |
FormulaNH2ClC6H3C6H3ClNH2 |
Conversion |
IDLH Ca [N.D.]
See: IDLH INDEX |
Exposure Limits NIOSH REL: Ca See Appendix A
OSHA PEL: [1910.1007] See Appendix B |
Measurement Methods
NIOSH 5509;
OSHA 65
See: NMAM or OSHA Methods |
Physical Description Gray to purple, crystalline solid. |
MW: 253.1 |
BP: 788°F |
MLT: 271°F |
Sol(59°F): 0.07% |
VP: ? |
IP: ? |
Sp.Gr: ? |
Fl.P: ? |
UEL: ? |
LEL: ? |
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Incompatibilities & Reactivities None reported |
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact |
Symptoms Skin sensitization, dermatitis; headache, dizziness; caustic burns; frequent urination, dysuria; hematuria (blood in the urine); gastrointestinal upset; upper resp infection; [potential occupational carcinogen] |
Target Organs Bladder, 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
Change: Daily
Provide: Eyewash, Quick drench |
First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash immediately
Breathing: Respiratory support
Swallow: Medical attention immediately |
Respirator Recommendations (See Appendix E)
NIOSH 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 Escape:
(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
Important additional information about respirator selection |
| See also: INTRODUCTION See ICSC CARD: 0481 See MEDICAL TESTS: 0074 |
