IPCS INCHEM Home
GYPSUM (MINERAL)ICSC: 1215
November 2009
CAS #: 13397-24-5Calcium sulfate dihydrate

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.        In case of fire in the surroundings, use appropriate extinguishing media.   

   
  SYMPTOMS ACUTE HAZARDS FIRST AID
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 CLASSIFICATION & 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. 

According to UN GHS Criteria

 

Transportation
UN Classification
 

STORAGE
 
PACKAGING
 
GYPSUM (MINERAL) ICSC: 1215
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
WHITE CRYSTALLINE POWDER OR LUMPS. 

Physical dangers
 

Chemical dangers
 

Formula: CaSO4. 2H2O
Molecular mass: 172.2
Melting point: 100-150°C
See Notes.
Density: 2.3 g/cm³
Solubility in water, g/100ml at 25°C: 0.24 (very poor) 


EXPOSURE & HEALTH EFFECTS

Routes of exposure
 

Effects of short-term exposure
May cause mechanical irritation. 

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

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


Occupational exposure limits
TLV: (inhalable fraction): 10 mg/m3, ppm, as TWA.
MAK: (inhalable fraction): 4 mg/m3; pregnancy risk group: C; (respirable fraction): 1.5 mg/m3; pregnancy risk group: C 

ENVIRONMENT
 

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 ICSC 1589 and ICSC 1734. 

ADDITIONAL INFORMATION
  EC Classification
 

All rights reserved. The published material is being distributed without warranty of any kind, either expressed or implied. Neither ILO nor WHO nor the European Commission shall be responsible for the interpretation and use of the information contained in this material.
    See Also:
       Toxicological Abbreviations