o-Tolidine |
Synonyms & Trade Names 4,4'-Diamino-3,3'-dimethylbiphenyl; Diaminoditolyl; 3,3'-Dimethylbenzidine; 3,3'-Dimethyl-4,4'-diphenyldiamine; 3,3'-Tolidine |
CAS No. 119-93-7 |
RTECS No. DD1225000 |
DOT ID & Guide |
FormulaC14H16N2 |
Conversion |
IDLH Ca [N.D.]
See: IDLH INDEX |
Exposure Limits NIOSH REL: Ca C 0.02 mg/m3 [60-minute] [skin] See Appendix A See Appendix C
OSHA PEL: See Appendix C |
Measurement Methods
NIOSH 5013;
OSHA 71
See: NMAM or OSHA Methods |
Physical Description White 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.] |
MW: 212.3 |
BP: 572°F |
MLT: 264°F |
Sol: 0.1% |
VP: ? |
IP: ? |
Sp.Gr: ? |
Fl.P: ? |
UEL: ? |
LEL: ? |
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| Combustible Solid |
Incompatibilities & Reactivities Strong oxidizers |
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact |
Symptoms irritation eyes, nose; in animals: liver, kidney damage; [potential occupational carcinogen] |
Target Organs Eyes, 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
Change: Daily
Provide: Eyewash, Quick drench |
First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap flush immediately
Breathing: Respiratory support
Swallow: Medical attention immediately |
Respirator Recommendations 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 (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
Important additional information about respirator selection |
| See also: INTRODUCTION See ICSC CARD: 0960
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