Arsenic (inorganic compounds, as As)
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CAS
7440-38-2 (metal)
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As (metal)
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RTECS
CG0525000 (metal)
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Synonyms & Trade Names
Arsenic metal: Arsenia
Other synonyms vary depending upon the specific As compound. [Note: OSHA considers "Inorganic Arsenic" to mean copper acetoarsenite & all inorganic compounds containing arsenic except ARSINE.]
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DOT ID & Guide
1558 / 152 (metal)
1562 / 152 (dust)
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Exposure
Limits
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NIOSH REL: Ca C 0.002 mg/m3 [15-minute] See Appendix A
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OSHA PEL: [1910.1018] TWA 0.010 mg/m3
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IDLH
Ca [5 mg/m3 (as As)]
See: 7440382
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Conversion
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Physical Description
Metal: Silver-gray or tin-white, brittle, odorless solid.
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MW: 74.9
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BP: Sublimes
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MLT: 1135°F (Sublimes)
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Sol: Insoluble
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VP: 0 mmHg (approx)
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IP: NA
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Sp.Gr: 5.73 (metal)
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Fl.P: NA
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UEL: NA
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LEL: NA
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Metal: Noncombustible Solid in bulk form, but a slight explosion hazard in the form of dust when exposed to flame.
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Incompatibilities & Reactivities
Strong oxidizers, bromine azide [Note: Hydrogen gas can react with inorganic arsenic to form the highly toxic gas arsine.]
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Measurement Methods
NIOSH 7300, 7301, 7303, 7900, 9102; OSHA ID105
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 (See Appendix E)
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 acid gas 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, skin and/or eye contact ingestion
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Symptoms
Ulceration of nasal septum, dermatitis, gastrointestinal disturbances, peripheral neuropathy, respiratory irritation, hyperpigmentation of skin, [potential occupational carcinogen] |
Target Organs
Liver, kidneys, skin, lungs, lymphatic system
Cancer Site
[lung & lymphatic cancer]
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See also: INTRODUCTION See ICSC CARD: 0013 See MEDICAL TESTS: 0017
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