Calcium Sulphate (CAS 7778-18-9) — formula CaSO4, molecular weight 135.91 g/mol; category inorganic chemicals.
Calcium Sulphate (CAS 7778-18-9) is a chemical raw material in the inorganic chemicals category. Its molecular formula CaSO4 comprises 1 Ca, 1 S, 4 O atoms. Its molecular weight is about 135.91 g/mol. Reported physicochemical data: melting point around 1450 °C. As a sourcing and distribution partner we help locate and compare this item across domestic and cross-border channels, arranging samples and batch orders with full COA and compliance files.
| CAS Number | 7778-18-9 |
|---|---|
| Molecular Formula | CaSO4 |
| Molecular Weight | 135.91 g/mol |
| Melting Point | 1450 °C |
| Applications | Gypsum is the dihydrate form and Plaster of Paris is the hemihydrate form. 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 |
| Category | Inorganic Chemicals|Acidity Regulators|Stabilizers & Coagulants|Thickeners |
Documented applications: Gypsum is the dihydrate form and Plaster of Paris is the hemihydrate form. 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.
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.
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
The CAS registry number of Calcium Sulphate is 7778-18-9.
Molecular formula CaSO4, molecular weight 135.91 g/mol.
It is also registered under: Calcium Sulphate, Calcium sulfate.
Recorded applications: Gypsum is the dihydrate form and Plaster of Paris is the hemihydrate form. 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.
Category: Inorganic Chemicals / Acidity Regulators / Stabilizers & Coagulants / Thickeners.
Packaging is agreed per order, from lab-scale packs to bulk, and confirmed with each order rather than fixed on the page. A Certificate of Analysis (COA) ships with every batch and MSDS is available; where the end use carries a regulatory limit (food contact, pharmaceutical or cosmetic), state the standard at enquiry and the grade is set against it.
Independent reference data for Calcium Sulphate (CAS 7778-18-9), compiled from public chemistry databases.
| CAS Registry Number | 7778-18-9 |
|---|---|
| PubChem CID | 24497 |
| Molecular formula | CaSO4 |
| Molecular weight | 135.91 g/mol |
| IUPAC name | calcium sulfate |
| InChIKey | OSGAYBCDTDRGGQ-UHFFFAOYSA-L |
| UNII (FDA) | E934B3V59H |
| ChEBI ID | CHEBI:31346 |
| Molecular Weight | 136.14 |
|---|---|
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 4 |
| Rotatable Bond Count | 0 |
| Exact Mass | 135.9143205 |
| Monoisotopic Mass | 135.9143205 |
| Topological Polar Surface Area | 88.6 |
| Heavy Atom Count | 6 |
| Melting Point | 1450 °C |
|---|---|
| Solubility | 0.3 % (NIOSH, 2024) |
| Solubility | 0.3% |
| Density | 2.960 |
| Density | 2.9 g/cm³ |
| Density | 2.96 |
| Vapor Pressure | 0 mmHg (approx) (NIOSH, 2024) |
| Vapor Pressure | 0 mmHg (approx) |
| Decomposition | 1450 °C |
| Color Additive Status | 178.3297 |
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)
| Regulatory & Food Contact | FDA 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 summary | 93.5% (1291 / 1381) |
| GHS notification summary | 93.5% (1291 / 1381) |
|---|---|
| Reported hazard statements | H335 |
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.
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. Melting Point: 1450 °C; Solubility: 0.3 % (NIOSH, 2024); Solubility: 0.3%.
Source: PubChem / Wikidata; the batch COA governs where values differ.
Supplier: Jinan Shenghe Chemical Co., Ltd.
中文页面: Calcium Sulphate