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Gypsum

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.]
CAS No.
13397-24-5
RTECS No.
MG2360000
DOT ID & Guide
Formula
CaSO4 • 2H2O
Conversion
IDLH
N.D.
See: IDLH INDEX
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)
Measurement Methods

NIOSH 0500 , 0600
See: NMAM or OSHA Methods
Physical Description
White or nearly white, odorless, crystalline solid.
MW:
172.2
BP:
?		 MLT: 262-325°F (Loses H2O) Sol(77°F): 0.2%
VP:
0 mmHg (approx)
IP:
NA
Sp.Gr:
2.32
Fl.P:
NA
UEL:
NA
LEL:
NA
Noncombustible Solid
Incompatibilities & Reactivities
Aluminum (at high temperatures), diazomethane
Exposure Routes
inhalation, skin and/or eye contact
Symptoms
irritation eyes, skin, mucous membrane, upper respiratory system; cough, sneezing, rhinorrhea (discharge of thin nasal mucus)
Target Organs
Eyes, skin, respiratory system
Personal Protection/Sanitation
(See protection codes)
Skin: No recommendation
Eyes: No recommendation
Wash skin: No recommendation
Remove: No recommendation
Change: No recommendation
First Aid
(See procedures)
Eye: Irrigate immediately

Breathing: Fresh air
Respirator Recommendations

Not available.

Important additional information about respirator selection

See also: INTRODUCTION   See ICSC CARD: 1215
 

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