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CALCIUM SULFATE

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The Chemical Identifier fields include common identification numbers, the NFPA diamond, U.S. Department of Transportation hazard labels, and a general description of the chemical. The information in CAMEO Chemicals comes from a variety of data sources.
CAS Number UN/NA Number
  • 7778-18-9
none
DOT Hazard Label USCG CHRIS Code
data unavailable none
NIOSH Pocket Guide International Chem Safety Card
Calcium sulfateexternal link
NFPA 704
data unavailable
General Description
Odorless, white powder or colorless, crystalline solid. Crystals sometimes have a blue, gray or reddish tinge or can be brick red. Density: 2.96 g cm-3.

The Hazard fields include special hazard alerts, air and water reactions, fire hazards, health hazards, a reactivity profile, and details about reactive groups assignments and potentially incompatible absorbents. The information in CAMEO Chemicals comes from a variety of data sources.
Reactivity Alerts
none
Air & Water Reactions
No rapid reaction with air No rapid reaction with water
Fire Hazard
No information available.
Health Hazard
Exposure Routes: inhalation, skin and/or eye contact

Symptoms: Irritation eyes, skin, upper respiratory system; conjunctivitis; rhinitis, epistaxis (nosebleed)

Target Organs: Eyes, skin, respiratory system (NIOSH, 2016)
Reactivity Profile
CALCIUM SULFATE is non-combustible. Decomposes to give toxic oxides of sulfur, but only at very high temperature (>1500°C). Generally of low reactivity but may act as an oxidizing agent: incompatible with diazomethane, aluminum, and phosphorus. Certain forms of calcium sulfate react with water; others do not. INSOLUBLE ANHYDRITE or dead-burned gypsum is made by the dehydration of calcium sulfate dihydrate (gypsum) at high (> 600°C) temperature. At room temperature, insoluble anhydrite dissolves very slowly to the extent of 0.24 g per 100 g of water and does not absorb moisture from the air. SOLUBLE ANHYDRITE, which is obtained by heating calcium sulfate dihydrate at a temperature below 300°C, has a high affinity for water and is used as a desiccant. Soluble anhydrite absorbs water to form calcium sulfate hemihydrate (Plaster of Paris).
Belongs to the Following Reactive Group(s)
Potentially Incompatible Absorbents

No information available.

The Response Recommendation fields include isolation and evacuation distances, as well as recommendations for firefighting, non-fire response, protective clothing, and first aid. The information in CAMEO Chemicals comes from a variety of data sources.
Isolation and Evacuation
No information available.
Firefighting
No information available.
Non-Fire Response
No information available.
Protective Clothing
Skin: No recommendation is made specifying the need for personal protective equipment for the body.

Eyes: No recommendation is made specifying the need for eye protection.

Wash skin: No recommendation is made specifying the need for washing the substance from the skin (either immediately or at the end of the work shift).

Remove: No recommendation is made specifying the need for removing clothing that becomes wet or contaminated.

Change: No recommendation is made specifying the need for the worker to change clothing after the work shift. (NIOSH, 2016)
DuPont Tychem® Suit Fabrics
No information available.
First Aid
Eye: If this chemical contacts the eyes, immediately wash the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately. Contact lenses should not be worn when working with this chemical.

Skin: If this chemical contacts the skin, wash the contaminated skin with soap and water.

Breathing: If a person breathes large amounts of this chemical, move the exposed person to fresh air at once. Other measures are usually unnecessary. (NIOSH, 2016)

The Physical Property fields include properties such as vapor pressure and boiling point, as well as explosive limits and toxic exposure thresholds. The information in CAMEO Chemicals comes from a variety of data sources.
Chemical Formula:
  • CaSO4
Flash Point: data unavailable
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: data unavailable
Melting Point: 2840 ° F (Decomposes) (NIOSH, 2016)
Vapor Pressure: 0 mm Hg (approx) (NIOSH, 2016)
Vapor Density (Relative to Air): data unavailable
Specific Gravity: 2.96 (NIOSH, 2016)
Boiling Point: Decomposes (NIOSH, 2016)
Molecular Weight: 136.1 (NIOSH, 2016)
Water Solubility: 0.3 % (NIOSH, 2016)
Ionization Potential: data unavailable
IDLH: data unavailable

AEGLs (Acute Exposure Guideline Levels)

No AEGL information available.

ERPGs (Emergency Response Planning Guidelines)

No ERPG information available.

PACs (Protective Action Criteria)

No PAC information available.

The Regulatory Information fields include information from the U.S. Environmental Protection Agency's Title III Consolidated List of Lists, the U.S. Department of Homeland Security's Chemical Facility Anti-Terrorism Standards, and the U.S. Occupational Safety and Health Administration's Process Safety Management of Highly Hazardous Chemicals Standard List (see more about these data sources).

EPA Consolidated List of Lists

No regulatory information available.

DHS Chemical Facility Anti-Terrorism Standards (CFATS)

No regulatory information available.

OSHA Process Safety Management (PSM) Standard List

No regulatory information available.

This section provides a listing of alternate names for this chemical, including trade names and synonyms.
  • A 30
  • A 30 (SULFATE)
  • ANHYDRITE
  • ANHYDROUS CALCIUM SULFATE
  • ANHYDROUS GYPSUM
  • ANHYDROUS SULFATE OF LIME
  • BASIC CALCIUM SULFATE
  • CA 5
  • CA 5 (SULFATE)
  • CALCIUM SALT OF SULFURIC ACID
  • CALCIUM SULFATE
  • CALCIUM SULFATE (1:1)
  • CALCIUM SULFATE (CASO4)
  • CALCIUM SULPHATE
  • CAS 20
  • CAS 20-4
  • CRYSALBA
  • D 101A
  • D 101A (SULFATE)
  • DEAD-BURNED GYPSUM
  • DENKA SIGMA 1000
  • DRIERITE
  • FRANKLIN FIBER H 45
  • KARSTENITE
  • MURIACITE
  • OPAREX 10
  • OSTEOSET
  • SSS-A
  • SULFURIC ACID CALCIUM SALT
  • SULFURIC ACID CALCIUM(2+) SALT (1:1)
  • THIOLITE

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