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GYPSUM (MINERAL)
ICSC: 1215
Peer-Review Status: 26.11.2009 Validated
Calcium sulfate dihydrate 
CAS #: 13397-24-5 RTECS #: MG2360000
 		    Formula: CaSO4. 2H2O
Molecular mass: 172.2

TYPES OF
HAZARD /
EXPOSURE 		ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.    In case of fire in the surroundings, use appropriate extinguishing media. 
EXPLOSION      
 
EXPOSURE      
Inhalation Cough.  Use local exhaust or breathing protection.  Fresh air, rest. 
Skin     Rinse and then wash skin with water and soap. 
Eyes Redness. Pain.  Wear safety spectacles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion   Do not eat, drink, or smoke during work.  Rinse mouth. 

SPILLAGE DISPOSAL
 		PACKAGING & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting.   
EC Classification
 
UN Classification
 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
   

IMPORTANT DATA
Physical State; Appearance
WHITE CRYSTALLINE POWDER OR LUMPS. 

Physical dangers
 

Chemical dangers
 

Occupational exposure limits
TLV (inhalable fraction): 10mg/m³ as TWA; (ACGIH 2009).
MAK (inhalable fraction): 4 mg/m³;.
MAK (respirable fraction): 1.5 mg/m³; Pregnancy risk group: C; (DFG 2009). 

Routes of exposure
 

Inhalation risk
A nuisance-causing concentration of airborne particles can be reached quickly when dispersed, especially if powdered. 

Effects of short-term exposure
May cause mechanical irritation. 

Effects of long-term or repeated exposure
Lungs may be affected by repeated or prolongated exposure to dust particles. 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Melting point: 100-150°C
See Notes.
Density: 2.3 g/cm³
Solubility in water, g/100ml at 25°C: 0.24 (very poor)  		 

NOTES
Gypsum is the natural form of the product and may contain crystalline silica.
The apparent melting point caused by loss of crystal water is given.
See also ICSC 1589 Calcium sulfate anhydrous and 1734 Calcium sulfate dihydrate. 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety 		WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
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    See Also:
       Toxicological Abbreviations