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Calcium Sulphate

CAS 7778-18-9CaSO4MW 135.91 g/mol

Calcium Sulphate (CAS 7778-18-9) — formula CaSO4, molecular weight 135.91 g/mol; category inorganic chemicals.

Specifications

CAS Number7778-18-9
Molecular FormulaCaSO4
Molecular Weight135.91 g/mol
Melting Point1450 °C
ApplicationsAcidity Regulators, Stabilizers &amp, Coagulants, Thickeners
CategoryInorganic Chemicals|Acidity Regulators|Stabilizers & Coagulants|Thickeners

Where it is used

Documented applications: Acidity Regulators, Stabilizers &amp, Coagulants, Thickeners.

Purchase Profile

What this product is

Calcium Sulphate is an inorganic compound with CAS registry number 7778-18-9 and molecular formula CaSO4 (molecular weight 135.91 g/mol), belonging to the inorganic chemicals segment of chemical raw materials.

Identification

CAS number: 7778-18-9

Its molecular formula CaSO4 comprises 1 Ca, 1 S, 4 O atoms.

Also known as: Calcium Sulphate · Calcium sulfate

Category: inorganic chemicals / chemical / chemical / food additives

Frequently Asked Questions

What is the CAS number of Calcium Sulphate?

The CAS registry number of Calcium Sulphate is 7778-18-9.

What is the molecular formula and molecular weight of Calcium Sulphate?

Molecular formula CaSO4, molecular weight 135.91 g/mol.

What other names is Calcium Sulphate known by?

It is also registered under: Calcium Sulphate, Calcium sulfate.

What are the documented applications of Calcium Sulphate?

Recorded applications: Acidity Regulators, Stabilizers &amp, Coagulants, Thickeners.

Which category does Calcium Sulphate belong to?

Category: Inorganic Chemicals / Acidity Regulators / Stabilizers & Coagulants / Thickeners.

PubChem Public Data

Public-database records for Calcium Sulphate (CAS 7778-18-9), reproduced here for independent cross-checking.

Safety classification and hazard statements

GHS notification summary93.5% (1291 / 1381)
Reported hazard statementsH335

This chemical does not meet GHS hazard criteria for 93.5% (1291 of 1381) of all reports.

Reported as not meeting GHS hazard criteria by 1291 of 1381 companies (only 6.5% companies provided GHS information). For more detailed information, please visit ECHA C&L website.

Regulatory listings

Regulatory & Food ContactFDA Substance added to food: ANTICAKING AGENT OR FREE-FLOW AGENT, DRYING AGENT, FORMULATION AID, LEAVENING AG
FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS
FIRMING_AGENT; FLOUR_TREATMENT_AGENT; SEQUESTRANT; YEAST_FOO: Food Additives
ANTICAKING AGENT OR FREE-FLOW AGENT, DRYING AGENT, FORMULATION AID, LEAVENING AGENT, LUBRICANT OR RELEASE AGEN
NOT LIMITED
NMRS 53/TRS 539-JECFA 17/37
GHS notification summary93.5% (1291 / 1381)

Physical description and handling notes

  • Calcium sulfate appears as odorless, white powder or colorless, crystalline solid. Crystals sometimes have a blue, gray or reddish tinge or can be brick red. 密度: 2.96 g cm-3.
  • Large Crystals; Wet Solid; Liquid; Liquid; Other Solid; Dry Powder; Other Solid; Large Crystals; CBI; Dry Powder; Other Solid
  • Fine, white to slightly yellowish-white odourless powder
  • Odorless, white powder or colorless, crystalline solid. [Note: May have blue, gray, or reddish tinge; [NIOSH]
  • WHITE HYGROSCOPIC POWDER OR CRYSTALLINE POWDER.
  • Odorless, white powder or colorless, crystalline solid.

Reported physical properties

熔点1450 °C
溶解度0.3 % (NIOSH, 2024)
溶解度0.3%
密度2.960
密度2.9 g/cm³
密度2.96
蒸气压0 mmHg (approx) (NIOSH, 2024)
蒸气压0 mmHg (approx)
Decomposition1450 °C
Color Additive Status178.3297

How this substance is indexed

CAS Registry Number7778-18-9
PubChem CID24497
分子式CaSO4
分子量135.91 g/mol
IUPAC 名称calcium sulfate
InChIKeyOSGAYBCDTDRGGQ-UHFFFAOYSA-L
UNII（FDA）E934B3V59H
ChEBI 编号CHEBI:31346

Documented uses

  • Gypsum is the dihydrate form and Plaster of Paris is the hemihydrate form. [NIOSH] Used in cement and paper filler (insoluble anhydrite), in a drying agent (soluble anhydrite), in wall plaster and wallboard (hemihydrate), and in soil treatment, Plaster of Paris, Portland cement, water clarification, animal feed, and calcium supplements in food (dihydrate gypsum); The natural forms are the mineral anhydrite (CaSO4) and the dihydrate, gypsum (CaSO4 . 2H2O). [ACGIH]
  • Cement Producing [Category: Industry]
  • Farming (Feed Additives) [Category: Industry]
  • HEAVY CLAY SOIL CONDITIONER, CARRIER /DIHYDRATE/
  • USED FOR WALL PLASTERS; WALL BOARD; TILES & BLOCKS FOR BUILDING INDUSTRY; MOLDINGS; STATUARY; IN PAPER INDUSTRY /HEMIHYDRATE/
  • For more Uses (Complete) data for CALCIUM SULFATE (10 total), please visit the HSDB record page.

Names this substance appears under

CALCIUM SULFATE; 7778-18-9; Anhydrous gypsum; Drierite; Karstenite; Muriacite; Basic calcium sulfate; Calcium sulfate, anhydrous; calcium sulphate; Calcium sulfate anhydrous; Crysalba; Osteoset; Thiolite; Anhydrous sulfate of lime; Natural anhydrite; Sulfuric acid, calcium salt (1:1)

Computed molecular descriptors

分子量136.14
氢键供体数0
氢键受体数4
可旋转键数0
精确质量135.9143205
单同位素质量135.9143205
拓扑极性表面积88.6
重原子数6
形式电荷0
复杂度62.2

Database abstract

Calcium Sulphate is identified by CAS 7778-18-9, molecular formula CaSO4 and molecular weight 135.91 g/mol. UNII E934B3V59H; ChEBI 31346; InChIKey OSGAYBCDTDRGGQ-UHFFFAOYSA-L. 熔点: 1450 °C; 溶解度: 0.3 % (NIOSH, 2024); 溶解度: 0.3%.

Source: PubChem / Wikidata; the batch COA governs where values differ.

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