Calcium Sulfate Dihydrate

Base Information

• Chemical Name: Calcium Sulfate Dihydrate
• CAS No.: 10101-41-4
• Deprecated CAS: 77030-59-2,70513-70-1
• Molecular Formula: H4CaO6S
• Molecular Weight: 172.1712
• Hs Code.: 28332990
• European Community (EC) Number: 600-148-1,927-377-2
• ICSC Number: 1734
• UNII: 4846Q921YM
• DSSTox Substance ID: DTXSID7047514
• Wikipedia: Alabaster
• Wikidata: Q30135771
• NCI Thesaurus Code: C65281
• RXCUI: 1310465
• Mol file: 10101-41-4.mol

Synonyms:Alabaster;Anhydrous Sulfate of Lime;Artificial Dental Stone;Calcium Sulfate;Calcium Sulfate (1:1), Dihydrate;Calcium Sulfate (1:1), Hemihydrate;Calcium Sulfate (2:1);Calcium Sulfate Dihydrate;Calcium Sulfate, Anhydrous;Calcium Sulfate, Dihydrate;Calcium Sulfate, Hemihydrate;Calcium Sulphate;Dental Gypsum;Dental Stone, Artificial;Drierite;Gypsite;Gypsum;Gypsum, Dental;Karstenite;Plaster of Paris;Stone, Artificial Dental

Chemical Property of Calcium Sulfate Dihydrate

Chemical Property:

• Appearance/Colour: white powder
• Vapor Pressure: 3.35E-05mmHg at 25°C
• Melting Point: 128 °C
• Boiling Point: 330 °C at 760 mmHg
• Flash Point: 163 °C
• PSA: 107.10000
• Density: 2.32 g/cm³
• LogP: -0.38580
• Storage Temp.: Store at RT.
• Sensitive.: Hygroscopic
• Solubility.: H2O: 0.01 M at 20 °C, clear, colorless
• Water Solubility.: 2 g/L (20 ºC)
• Hydrogen Bond Donor Count: 2
• Hydrogen Bond Acceptor Count: 6
• Rotatable Bond Count: 0
• Exact Mass: 171.9354499
• Heavy Atom Count: 8
• Complexity: 62.2

Purity/Quality:

99% ^*data from raw suppliers

Calcium sulfate dihydrate ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xn
• Hazard Codes: Xn
• Statements: 20/21/22-36/37/38
• Safety Statements: 22-24/25-36-26

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Chemical Classes: Metals -> Metals, Inorganic Compounds
• Canonical SMILES: O.O.[O-]S(=O)(=O)[O-].[Ca+2]
• 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 Exposure: Lungs may be affected by repeated or prolongated exposure to dust particles.
• Uses: (1) Calcium sulfate dihydrate can be used as raw material of building materials and cement, it can also be widely used in rubber, plastics, fertilizers, pesticides, paints, textiles, food, pharmaceutical, paper, household chemicals, arts and crafts, culture and education sectors. In the areas of absence of sulfur resource Calcium sulfate dihydrate can be used to manufacture sulfuric acid and ammonium sulfate. Colorless and transparent gypsum can be used for optical materials. (2) Calcium sulfate dihydrate can be used as raw material of manufacturing cement, calcium sulfate hemihydrate and sulfuric acid. Paint and paper industry can be used as fillers. It can be used as fertilizer in agriculture which can reduce the alkalinity of the soil, improve soil properties. Food grade can be used as nutritional supplements (calcium to strengthen), coagulants, yeast food, the dough adjusting agents, chelating agents, it can also be used as enhancer of tomatoes, potatoes, canned organizations, hardener of brewing water, flavor-enhancer of wine, etc. (3) Calcium sulfate dihydrate can be used as hygroscopic agent of analysis of trace nitrogen fertilizer production of carbon dioxide and carbon monoxide and carbon dioxide. It can be used in paint, artificial ivory, paint, paper, dyes, printing, metallurgy, water treatment. Used in this determination of oxalates Calcium Sulfate Dihydrate is obtained from gypsum, a naturally occurring compound. Also used in the preparation of calcium sulfate and calcium sulfoaluminate.
• Production method: When natural gypsum mine removes impurity, clay is calcined and then milled together can get it. Sodium sulfate is added into by-product (calcium chloride) of ammonia and alkali method to product alkali, the reaction product is refined to get calcium sulfate dihydrate. Byproduct of manufacturing organic acid. For example: The byproduct calcium oxalate is decomposed by sulfuric acid when oxalic acid is manufacturing, and then it is refined to get calcium sulfate dihydrate. There are also open-pit mining to underground mining. The former is the open hillside, stepped mining; the latter mining method which employs the majority of the mine shaft development or inclined to open up, and room and pillar mining method, next is comprehensive mining method. Mining technological process sees "phosphate rock." The vast majority of gypsum mining is used hand-selected method, some mine production is without any ore sorting, extraetedore is mined mineral.