o-Dianisidine
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CAS
119-90-4
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(NH2C6H3OCH3)2
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RTECS
DD0875000
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Synonyms & Trade Names
Dianisidine; 3,3'-Dianisidine; 3,3'-Dimethoxybenzidine
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DOT ID & Guide
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Exposure
Limits
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NIOSH REL: Ca See Appendix A See Appendix C
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OSHA PEL: See Appendix C
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IDLH
Ca [N.D.]
See: IDLH INDEX
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Conversion
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Physical Description
Colorless crystals that turn a violet color on standing. [Note: Used as a basis for many dyes.]
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MW: 244.3
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BP: ?
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MLT: 279°F
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Sol: Insoluble
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VP: ?
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IP: ?
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Sp.Gr: ?
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Fl.P: 403°F
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UEL: ?
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LEL: ?
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Combustible Solid
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Incompatibilities & Reactivities
Oxidizers
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Measurement Methods
NIOSH 5013; OSHA 71
See: NMAM or OSHA Methods |
Personal Protection & Sanitation (See protection)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated/Daily
Remove: When wet or contaminated
Change: Daily
Provide: Eyewash, Quick drench
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
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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
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Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
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Symptoms
Irritation skin; in animals: kidney, liver damage; thyroid, spleen changes; [potential occupational carcinogen]
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Target Organs
Skin, kidneys, liver, thyroid, liver
Cancer Site
[in animals: bladder, liver, stomach & mammary gland tumors]
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