Phosphorous acid
Also known as: Orthophosphorus acid, Phosphorous acid 50% aqueous solution, hydrophosphorous acid, phosphonic acid
Phosphorous acid (CAS 10294-56-1) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula H3O3P and a molecular weight of 81.99580 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 10294-56-1
- Jingsj CID
- J-1341547-9
- Molecular Formula
- H3O3P
- Molecular Weight
- 81.99580 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Exact Mass | 81.98200 |
|---|---|
| PSA | 74.28000 |
Customs & Trade Information
| HS Code | 2811199090 |
|---|
Frequently Asked Questions
What is the CAS number of Phosphorous acid?
The CAS number of Phosphorous acid is 10294-56-1.
What are the molecular formula and molecular weight of Phosphorous acid?
Phosphorous acid has molecular formula H3O3P and molecular weight 81.99580 g/mol.
What are the upstream and downstream products of Phosphorous acid?
For Phosphorous acid, Upstream Products: Phosphorus tribromide; Downstream Products: N-(phosphonomethyl)iminodiacetic acid, N,N-Diisobutylethylenediamine, 4-cyclopentylmorpholine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Phosphorous acid (CAS 10294-56-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1341547-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.