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| Arsenic (inorganic compounds, as As) | CAS 7440-38-2 (metal) | ||
| As (metal) | 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.] |
DOT ID & Guide 1558 152 (metal) 1562 152 (dust) |
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Exposure Limits |
NIOSH REL: Ca C 0.002 mg/m3 [15-minute] See Appendix A | ||
| OSHA PEL: [1910.1018] TWA 0.010 mg/m3 | |||
| IDLH Ca [5 mg/m3 (as As)] | Conversion | ||
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Physical Description Metal: Silver-gray or tin-white, brittle, odorless solid. |
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MW: 74.9 |
BP: Sublimes |
MLT: 1135°F (Sublimes) |
Sol: Insoluble |
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VP: 0 mmHg (approx) |
IP: NA |
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Sp.Gr: 5.73 (metal) |
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Fl.P: NA |
UEL: NA |
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, 7900; OSHA ID105 |
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Personal Protection & Sanitation 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 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 acid gas canister having a high-efficiency particulate filter/Any appropriate escape-type, self-contained breathing apparatus |
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| Exposure Routes inhalation, skin absorption, skin and/or eye contact ingestion | |
| Symptoms Ulceration of nasal septum, dermatitis, gastrointestinal disturbances, peripheral neuropathy, respiratory irritation, hyperpigmentation of skin, [potential occupational carcinogen] | |
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Target Organs
Liver, kidneys, skin, lungs, lymphatic system Cancer Site [lung & lymphatic cancer] |
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| See also: INTRODUCTION |