Sulfuric acid, calcium salt (11)
CaSO4
Molecular mass: 136.14
ICSC # 1589
CAS # 7778-18-9
RTECS # WS6920000
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Not combustible.
Gives off irritating or toxic fumes (or gases) in a fire.
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In case of fire in the surroundings: use appropriate extinguishing media.
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Explosion
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Exposure
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•Inhalation
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Cough.
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Local exhaust or breathing protection.
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Fresh air, rest.
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•Skin
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Protective gloves.
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Rinse and then wash skin with water and soap.
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•Eyes
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Redness.
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Safety goggles
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Abdominal pain.
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Do not eat, drink, or smoke during work.
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Rinse mouth.
Give plenty of water to drink.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Personal protection: P1 filter respirator for inert particles.
Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting.
Wash away remainder with plenty of water.
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Dry.
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Important Data
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Physical State; Appearance:
WHITE
HYGROSCOPIC
POWDER
OR CRYSTALLINE POWDER
Physical Dangers:
Chemical Dangers:
Occupational Exposure Limits:
TLV: (particulate matter containing no asbestos and <1% crystalline silica) 10 mg/m3 as TWA; (ACGIH 2005).
MAK: (Respirable fraction) 6 mg/m3 (DFG 2004).
OSHA PEL: TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp)
NIOSH REL: TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp)
NIOSH IDLH: N.D. See: IDLH INDEX
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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.
Ingestion may cause gastrointestinal blockage.
Effects of Long-Term or Repeated Exposure:
Lungs may be affected by repeated or prolonged exposure to dust particticles if crystalline silica is present.
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Physical
Properties
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Melting point (decomposes): 1450°C
Density: 2.9
g/cm3
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Solubility in water, g/100 ml at 20°C: 0.2
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Environmental
Data
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N O T E S
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May contain a small amounts of crystalline silica.
Health effects apply also to hydrated form.
See ICSC 1215 Gypsum.
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ADDITIONAL INFORMATION
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ICSC: 1589
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CALCIUM SULFATE (ANHYDROUS)
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(C) IPCS, CEC, 1994
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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.
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