CALCIUM SULFATE DIHYDRATE ICSC: 1734
Magnesia white
Sulfuric acid, calcium salt, dihydrate
Mineral white
CaSO4 - 2H2O
Molecular mass: 172.2
ICSC #    1734
CAS #     10101-41-4
GH, nsidered
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.
Local exhaust or breathing protection.
Fresh air, rest.
 •SKIN

Rinse and then wash skin with water and soap.
 •EYES Redness.
Safety spectacles
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
 •INGESTION
Do not eat, drink, or smoke during work.
Rinse mouth.
SPILLAGE DISPOSAL STORAGE PACKAGING & 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.


SEE IMPORTANT INFORMATION ON BACK
ICSC: 1734 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
CALCIUM SULFATE DIHYDRATE ICSC: 1734
Important Data
PHYSICAL STATE; APPEARANCE:
 CRYSTALLINE POWDER

PHYSICAL DANGERS:

CHEMICAL DANGERS:

OCCUPATIONAL EXPOSURE LIMITS:
 TLV: 10 mg/m3
(Inhalable fraction)
(ACGIH 2009).
MAK: 4 mg/m3 (Inhalable fraction); 1.5 mg/m3 (Respirable fraction);
Pregnancy risk group: C
(DFG 2009).


 ROUTES OF EXPOSURE:

INHALATION RISK:
 A nuisance-causing concentration of airborne particles can be reached quickly when dispersed .

EFFECTS OF SHORT-TERM EXPOSURE:
 May cause mechanical irritation.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
 Lungs may be affected by repeated or prolonged exposure \to dust particles.
PHYSICAL
PROPERTIES
Melting point: 100-150°C
(See Notes)
Density: 2.32g/cm3
 Solubility in water, g/100 ml at 20°C: 0.2
(very poor)
ENVIRONMENTAL
DATA

N O T E S
The apparent melting point caused by loss of crystal water is given. See also ICSC 1215 Gypsum and 1589 Calcium sulfate anhydrous.
ADDITIONAL INFORMATION


ICSC: 1734 CALCIUM SULFATE DIHYDRATE
(C) IPCS, CEC, 1994
IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.