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o-Toluidine

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Synonyms & Trade Names
2-Aminotoluene, o-Aminotoluene, 1-Methyl-2-aminobenzene, 2-Methylaniline, o-Methylaniline, ortho-Toluidine, o-Tolylamine
CAS No.
95-53-4
RTECS No.
XU2975000
DOT ID & Guide
1708 153
Formula
CH₃C₆H₄NH₂
Conversion
1 ppm = 4.38 mg/m3
IDLH
Ca [50 ppm]
See: 95534
Exposure Limits
NIOSH REL
Ca [skin] See Appendix A
OSHA PEL
TWA 5 ppm (22 mg/m3) [skin]
Measurement Methods
NIOSH 2002 , 2017 , 8317;
OSHA 73
See: NMAM or OSHA Methods
Physical Description
Colorless to pale-yellow liquid with an aromatic, aniline-like odor.
Molecular Weight
107.2
Boiling Point
392°F
Freezing Point
6°F
Solubility
2%
Vapor Pressure
0.3 mmHg
Ionization Potential
7.44 eV
Specific Gravity
1.01
Flash Point
185°F
Upper Explosive Limit
?
Lower Explosive Limit
?
Class IIIA Combustible Liquid: Fl.P. at or above 140°F and below 200°F.
Incompatibilities & Reactivities
Strong oxidizers, nitric acid, bases
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
irritation eyes; anoxia, headache, cyanosis; lassitude (weakness, exhaustion), dizziness, drowsiness; micro hematuria (blood in the urine); eye burns; dermatitis; [potential occupational carcinogen]
Target Organs
Eyes, skin, blood, kidneys, liver, cardiovascular system
Cancer Site
[bladder cancer]
Personal Protection/Sanitation
(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated
Remove:When wet or contaminated
Change:No recommendation
Provide:Eyewash, Quick drench
First Aid
(See procedures)
Eye:Irrigate immediately
Skin:Soap wash 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
Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 0341   MEDICAL TESTS: 0234
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health