Calcium sulfate hemihydrate
Also known as: Plaster of Paris, Hemihydrate gypsum, Calcium sulfate hydrate (2:2:1), Gypsum hemihydrate, Calcium sulfate, hemihydrate, Densite, Crystacal, calcium sulphate hemihydrate, Sulfuric acid, calcium salt (1:1), hemihydrate
Calcium sulfate hemihydrate (CAS 26499-65-0) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula H2Ca2O9S2 and a molecular weight of 290.297 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 26499-65-0
- Jingsj CID
- J-51423-5
- Molecular Formula
- H2Ca2O9S2
- Molecular Weight
- 290.297 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Exact Mass | 289.839203 |
|---|
Frequently Asked Questions
What is the CAS number of Calcium sulfate hemihydrate?
The CAS number of Calcium sulfate hemihydrate is 26499-65-0.
What are the molecular formula and molecular weight of Calcium sulfate hemihydrate?
Calcium sulfate hemihydrate has molecular formula H2Ca2O9S2 and molecular weight 290.297 g/mol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Calcium sulfate hemihydrate (CAS 26499-65-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-51423-5 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.