ICSC 1734 - CALCIUM SULFATE DIHYDRATE

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CALCIUM SULFATE DIHYDRATE	ICSC: 1734 (November 2009)
Mineral white Magnesia white Sulfuric acid, calcium salt, dihydrate

CAS #: 10101-41-4

	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	PREVENTION	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)

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.

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, as TWA. MAK: (inhalable fraction): 4 mg/m³; pregnancy risk group: C. MAK: (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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