NIOSH logo and tagline

o-Anisidine

Related Pages
Synonyms & Trade Names
ortho-Aminoanisole, 2-Anisidine, o-Methoxyaniline [Note: o-Anisidine has been used as a basis for many dyes.]
CAS No.
90-04-0
RTECS No.
BZ5410000
DOT ID & Guide
2431 153
Formula
NH₂C₆H₄OCH₃
Conversion
IDLH
Ca [50 mg/m3]
See: 90040
Exposure Limits
NIOSH REL
Ca TWA 0.5 mg/m3 [skin] See Appendix A
OSHA PEL
TWA 0.5 mg/m3 [skin]
Measurement Methods
NIOSH 2514
See: NMAM or OSHA Methods
Physical Description
Red or yellow, oily liquid with an amine-like odor. [Note: A solid below 41°F.]
Molecular Weight
123.2
Boiling Point
437°F
Freezing Point
41°F
Solubility
(77°F): 1%
Vapor Pressure
<0.1 mmHg
Ionization Potential
7.44 eV
Specific Gravity
1.10
Flash Point
(oc) 244°F
Upper Explosive Limit
?
Lower Explosive Limit
?
Class IIIB Combustible Liquid: Fl.P. at or above 200°F.
Incompatibilities & Reactivities
Strong oxidizers
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
headache, dizziness; cyanosis; red blood cell Heinz bodies; [potential occupational carcinogen]
Target Organs
Blood, kidneys, liver, cardiovascular system, central nervous system
Cancer Site
[in animals: tumors of the thyroid gland, bladder & kidneys]
Personal Protection/Sanitation
(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated
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

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: 0970
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health