Calcium sulfite hemihydrate
亚硫酸钙半水合物
Also known as: CALCIUM SULFITE 0.5-WATER, Calcium sulfite hydrate (2:2:1), Sulfurous acid, calcium salt, hydrate (2:2:1), Calcium sulfite (CaSO3) hemihydrate, 2CaSO3·H2O
Calcium sulfite hemihydrate (CAS 29501-28-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula CaSO3·0.5H2O and a molecular weight of 129.15 g/mol. It is also known as CALCIUM SULFITE 0.5-WATER, Calcium sulfite hydrate (2:2:1) and Sulfurous acid, calcium salt, hydrate (2:2:1). Key properties include a melting point of 650℃, a boiling point of 563.7±50.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 237.7±19.6 °C. No supplier offers are currently listed; request a quote. Record last updated Oct 8, 2026.
- CAS No.
- 29501-28-8
- Jingsj CID
- J-51460-6
- Molecular Formula
- CaSO305H2O
- Chinese Name
- 亚硫酸钙半水合物
- Molecular Weight
- 129.15 g/mol
- Category
- Organic Acids
- Last updated
- 10/8/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 650℃ |
|---|---|
| Boiling Point | 563.7±50.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 237.7±19.6 °C |
Frequently Asked Questions
What is the CAS number of Calcium sulfite hemihydrate?
The CAS number of Calcium sulfite hemihydrate is 29501-28-8.
What are the molecular formula and molecular weight of Calcium sulfite hemihydrate?
Calcium sulfite hemihydrate has molecular formula CaSO3·0.5H2O and molecular weight 129.15 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Calcium sulfite hemihydrate (CAS 29501-28-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-51460-6 (accessed 2026-10-24).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.