| Formula / Notation | H3PO3 |
|---|---|
| CAS Number | 10294-56-1 |
| Molecular Weight | 81.996 |
| Appearance | Pellets or Large Crystals; Dry Powder; Liquid |
| Also Known As | 10294-56-1; Orthophosphorus acid; DTXSID7035511; CHEBI:36361; RefChem:1095536; DTXCID5015511; 233-663-1; 35V6A8JW8E; Dihydroxyphosphine oxide; Trihydroxyphosphine |
| Category | Acids |
What is Phosphorous acid?
Phosphorous acid is a phosphorus oxoacid. It is a conjugate acid of a dihydrogenphosphite. It is a tautomer of a phosphonic acid.
Formula & Notation
IUPAC Name: phosphorous acid
Other Names / Synonyms: 10294-56-1; Orthophosphorus acid; DTXSID7035511; CHEBI:36361; RefChem:1095536; DTXCID5015511; 233-663-1; 35V6A8JW8E; Dihydroxyphosphine oxide; Trihydroxyphosphine
Properties & Characteristics
Physical Data
| Property | Value |
|---|---|
| Molecular Weight | 81.996 |
| Appearance | Pellets or Large Crystals; Dry Powder; Liquid |
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
Phosphorous acid is a phosphorus oxoacid. It is a conjugate acid of a dihydrogenphosphite. It is a tautomer of a phosphonic acid.
Used in industrial chemical synthesis, fertilizer production, battery electrolytes, metal processing, and laboratory acid-base reactions.
Corrosive. Causes severe burns to skin, eyes, and respiratory tract. Wear appropriate PPE including gloves, goggles, and lab coat. Consult SDS before use.
The formula or notation for Phosphorous acid is: H3PO3