| Identification | |
| Name: | Phosphorous acid |
| Synonyms: | Phosphorous acid;Phosphorous acid |
| CAS: | 10294-56-1 |
| EINECS: | 233-663-1 |
| Molecular Formula: | H3PO3 |
| Molecular Weight: | 81.99 |
| InChI: | InChI=1S/H3O3P/c1-4(2)3/h1-3H |
| Molecular Structure: |  |
| Properties | |
| Transport: | UN 2834 |
| Appearance: | COA |
| Safety Data | |
| Hazard Symbols |
Xn: Harmful
C: Corrosive
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