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| Gypsum | CAS 13397-24-5 | ||
| CaSO4 • 2H2O | RTECS MG2360000 | ||
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Synonyms & Trade Names Calcium(II) sulfate dihydrate, Gypsum stone, Hydrated calcium sulfate, Mineral white [Note: Gypsum is the dihydrate form of calcium sulfate; 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 White or nearly white, odorless, crystalline solid. |
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MW: 172.2 |
BP: ? |
MLT: 262-325°F (Loses H2O) |
Sol(77°F): 0.2% |
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VP: 0 mmHg (approx) |
IP: NA |
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Sp.Gr: 2.32 |
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Fl.P: NA |
UEL: NA |
LEL: NA |
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| Noncombustible Solid | |||
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Incompatibilities & Reactivities Aluminum (at high temperatures), diazomethane |
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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 Breathing: Fresh air |
| Respirator Recommendations To be added later | |
| Exposure Routes inhalation, skin and/or eye contact | |
| Symptoms irritation eyes, skin, mucous membrane, upper respiratory system; cough, sneezing, rhinorrhea (discharge of thin nasal mucous) | |
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Target Organs
Eyes, skin, respiratory system |
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| See also: INTRODUCTION See ICSC CARD: 1215 |