International Chemical Safety Cards

PLASTER OF PARIS ICSC: 1217
PLASTER OF PARIS
Gypsum hemihydrate
(CaSO4)2.H2O
Molecular mass: 290.3
CAS # 26499-65-0
RTECS # TP0700000
ICSC # 1217
TYPES OF
HAZARD/
EXPOSURE 		ACUTE HAZARDS/
SYMPTOMS 		PREVENTION FIRST AID/
FIRE FIGHTING
FIRE Not combustible.

In case of fire in the surroundings: all extinguishing agents allowed.
EXPLOSION


 
EXPOSURE
PREVENT DISPERSION OF DUST!

INHALATION Cough. Sore throat.
Local exhaust or breathing protection.
Fresh air, rest.
SKIN


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


SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Wash away remainder with plenty of water (extra personal protection: P1 filter respirator for inert particles).


SEE IMPORTANT INFORMATION ON BACK
ICSC: 1217 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

International Chemical Safety Cards

PLASTER OF PARIS ICSC: 1217

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PHYSICAL STATE; APPEARANCE:
ODOURLESS FINE, WHITE POWDER.

PHYSICAL DANGERS:


CHEMICAL DANGERS:


OCCUPATIONAL EXPOSURE LIMITS (OELs):
TLV: ppm; 10 mg/m3 (as TWA) (ACGIH 1993-1994).
MAK: ppm; 6 mg/m3 (1991).


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol.

INHALATION RISK:
Evaporation at 20°C is negligible; a nuisance-causing concentration of airborne particles can, however, be reached quickly especially if powdered.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance irritates the eyes and the respiratory tract.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
The substance may have effects on the eyes and respiratory tract , resulting in conjunctivitis, rhinitis, laryngitis, pharyngitis and impaired sense of smell and taste.
PHYSICAL
PROPERTIES
 Melting point: 163°C Solubility in water, g/100 ml at 25°C: 0.30
ENVIRONMENTAL
DATA
N O T E S
May contain a small amounts of crystalline silica. The apparent melting point caused by loss of crystal water is given.
ADDITIONAL INFORMATION


ICSC: 1217 PLASTER OF PARIS
© IPCS, CEC, 1993
IMPORTANT LEGAL NOTICE: Neither the CEC or the IPCS nor any person acting on behalf of 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.