Sulfurous acid
Also known as: Sulfur dioxide solution, Sulfurous anhydride solution, Sulphurous acid, Schweflige saure, acide sulfureux, acido sulfuroso, hydrogen sulphite, bisulphite
Sulfurous acid (CAS 7782-99-2) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula H2O3S and a molecular weight of 82.07910 g/mol. Key property: a density of 1.03 g/mL at 25 °C(lit.). No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 7782-99-2
- Jingsj CID
- J-38251-4
- Molecular Formula
- H2O3S
- Molecular Weight
- 82.07910 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Density | 1.03 g/mL at 25 °C(lit.) |
|---|---|
| Exact Mass | 81.97250 |
| PSA | 76.74000 |
| LogP | 0.54680 |
| Refractive Index | 1.788 |
Frequently Asked Questions
What is the CAS number of Sulfurous acid?
The CAS number of Sulfurous acid is 7782-99-2.
What are the molecular formula and molecular weight of Sulfurous acid?
Sulfurous acid has molecular formula H2O3S and molecular weight 82.07910 g/mol.
What are the upstream and downstream products of Sulfurous acid?
For Sulfurous acid, Upstream Products: Sodium hydroxymethanesulfinate, SULFUR DIOXIDE, Water; Downstream Products: Formaldehyde, Antipyrine, Dimethylamine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Sulfurous acid (CAS 7782-99-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-38251-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.