| Formula / Notation | CaO4S |
|---|---|
| CAS Number | 7778-18-9 |
| Molecular Weight | 136.14 |
| Melting Point | 2840 °F (Decomposes) (NIOSH, 2024) |
| Boiling Point | Decomposes (NIOSH, 2024) |
| Density | 2.96 (NIOSH, 2024) - Denser than water; will sink |
| Solubility | 0.3 % (NIOSH, 2024) |
| Appearance | 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. Density: 2.96 g cm-3. |
| Also Known As | 7778-18-9; Anhydrous gypsum; Drierite; Karstenite; Muriacite; calcium sulphate; Basic calcium sulfate; Calcium sulfate, anhydrous; Calcium sulfate anhydrous; Crysalba |
| Category | Salts |
What is Calcium sulfate?
Calcium sulfate (CaO4S) is a salt that appears as 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. Density: 2.96 g cm-3.. It has a molecular weight of 136.14 g/mol. Boiling point: Decomposes (NIOSH, 2024). Melting point: 2840 °F (Decomposes) (NIOSH, 2024).
Formula & Notation
IUPAC Name: calcium sulfate
Other Names / Synonyms: 7778-18-9; Anhydrous gypsum; Drierite; Karstenite; Muriacite; calcium sulphate; Basic calcium sulfate; Calcium sulfate, anhydrous; Calcium sulfate anhydrous; Crysalba
Properties & Characteristics
Physical Data
| Property | Value |
|---|---|
| Melting Point | 2840 °F (Decomposes) (NIOSH, 2024) |
| Boiling Point | Decomposes (NIOSH, 2024) |
| Density | 2.96 (NIOSH, 2024) - Denser than water; will sink |
| Molecular Weight | 136.14 |
| Solubility | 0.3 % (NIOSH, 2024) |
| Appearance | 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. Density: 2.96 g cm-3. |
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Calcium sulfate (CaO4S) is a salt that appears as 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. Density: 2.96 g cm-3.. It has a molecular weight of 136.14 g/mol. Boiling point: Decomposes (NIOSH, 2024). Melting point: 2840 °F (Decomposes) (NIOSH, 2024).
Used in food preservation, water treatment, chemical synthesis, fertilizers, and pharmaceutical applications.
Irritant or toxic depending on specific salt. Some salts are oxidising agents or toxic to aquatic environments. Consult SDS before use.
The formula or notation for Calcium sulfate is: CaO4S