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CALCIUM SULFATE DIHYDRATEICSC: 1734
November 2009
CAS #: 10101-41-4Mineral white
Magnesia white
Sulfuric acid, calcium salt, 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.  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 containers. If appropriate, moisten first to prevent dusting. 

According to UN GHS Criteria

No hazard classification according to GHS criteria 

Transportation
UN Classification
 

STORAGE
 
PACKAGING
 
CALCIUM SULFATE DIHYDRATE ICSC: 1734
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
CRYSTALLINE POWDER. 

Physical dangers
No data. 

Chemical dangers
No data. 

Formula: CaSO4 . 2H2O
Molecular mass: 172.2
Melting point: 100-150°C
See Notes.
Density: 2.32 g/cm³
Solubility in water, g/100ml at 20°C: 0.2 (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. 

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
The apparent melting point caused by loss of crystal water is given.
See ICSCs 1215 and 1589. 

ADDITIONAL INFORMATION
  EC Classification
 

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    See Also:
       Toxicological Abbreviations