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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
Formula
C14H16N2
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:
?
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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