| Product Name | Phosphorous acid |
| CAS No. | 13598-36-2 |
| Synonyms | Phosphonic acid; hydrogen phosphonate; phosphorus(+3) trihydride cation trihydroxide; Orthophosphorus; Orthophosphorous acid; Ortho-Phosphorous acid |
| InChI | InChI=1/3H2O.H3P/h3*1H2;1H3/q;;;+3/p-3 |
| Molecular Formula | H3PO3 |
| Molecular Weight | 81.9957 |
| Melting point | 73℃ |
| Water solubility | SOLUBLE |
| Hazard Symbols |  C:Corrosive; |
| Risk Codes | R22:; R35:; |
| Safety | S26:; S36/37/39:; S45:; |
13598-36-2 phosphorous acid
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