Arsenic (inorganic compounds, as As) |
Synonyms & Trade Names Arsenic metal: Arsenia
Other synonyms vary depending upon the specific As compound. [Note: OSHA considers "Inorganic Arsenic" to mean copper acetoarsenite and all inorganic compounds containing arsenic except ARSINE.] |
CAS No. 7440-38-2 (metal) |
RTECS No. CG0525000 (metal) |
DOT ID & Guide 1558 152 (metal)
1562 152 (dust) |
FormulaAs (metal) |
Conversion |
IDLH Ca [5 mg/m3 (as As)]
See: 7440382 |
Exposure Limits NIOSH REL: Ca C 0.002 mg/m3 [15-minute] See Appendix A
OSHA PEL: [1910.1018] TWA 0.010 mg/m3 |
Measurement Methods
NIOSH 7300 , 7301 , 7303 , 7900 , 9102;
OSHA ID105
See: NMAM or OSHA Methods |
Physical Description Metal: Silver-gray or tin-white, brittle, odorless solid. |
MW: 74.9 |
BP: Sublimes |
MLT: 1135°F (Sublimes) |
Sol: Insoluble |
VP: 0 mmHg (approx) |
IP: NA |
Sp.Gr: 5.73 (metal) |
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. |
Incompatibilities & Reactivities Strong oxidizers, bromine azide [Note: Hydrogen gas can react with inorganic arsenic to form the highly toxic gas arsine.] |
Exposure Routes inhalation, skin absorption, skin and/or eye contact, ingestion |
Symptoms Ulceration of nasal septum, dermatitis, gastrointestinal disturbances, peripheral neuropathy, resp irritation, hyperpigmentation of skin, [potential occupational carcinogen] |
Target Organs Liver, kidneys, skin, lungs, lymphatic system |
Cancer Site[lung & lymphatic cancer] |
Personal Protection/Sanitation (See protection codes)
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 |
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 |
| See also: INTRODUCTION See ICSC CARD: 0013 See MEDICAL TESTS: 0017 |
