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| Calcium sulfate | CAS 7778-18-9 | ||
| CaSO4 | RTECS WS6920000 | ||
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Synonyms & Trade Names Anhydrous calcium sulfate, Anhydrous gypsum, Anhydrous sulfate of lime, Calcium salt of sulfuric acid [Note: Gypsum is the dihydrate form & Plaster of Paris is the hemihydrate form.] |
DOT ID & Guide |
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Exposure Limits |
NIOSH REL: TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp) | ||
| OSHA PEL: TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp) | |||
| IDLH N.D. See: IDLH INDEX | Conversion | ||
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Physical Description Odorless, white powder or colorless, crystalline solid. [Note: May have blue, gray, or reddish tinge.] |
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MW: 136.1 |
BP: Decomposes |
MLT: 2840°F (Decomposes) |
Sol: 0.3% |
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VP: 0 mmHg (approx) |
IP: NA |
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Sp.Gr: 2.96 |
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Fl.P: NA |
UEL: NA |
LEL: NA |
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| Noncombustible Solid | |||
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Incompatibilities & Reactivities Diazomethane, aluminum, phosphorus, water [Note: Hygroscopic (i.e., absorbs moisture from the air). Reacts with water to form Gypsum & Plaster of Paris.] |
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Measurement Method Filter; none; Gravimetric; IV [Particulates NOR: #0500 (total), #0600 (respirable)] See: NMAM INDEX |
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Personal Protection & Sanitation Skin: N.R. Eyes: N.R. Wash skin: N.R. Remove: N.R. Change: N.R. |
First Aid (See procedures) Eye: Irrigate immediately Skin: Soap wash Breathing: Fresh air |
| Respirator Recommendations To be added later | |
| Exposure Routes inhalation, skin and/or eye contact | |
| Symptoms irritation eyes, skin, upper respiratory system; conjunctivitis; rhinitis, epistaxis (nosebleed) | |
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Target Organs
Eyes, skin, respiratory system |
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| See also: INTRODUCTION |