phosphorous acid
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colorless crystal，density is 1.65g/m3;melting point is 73℃;boiling point is 200℃. Use：widely used to make the materials of phosphate and the materials of plastic stabilizing agent in plastic industry. and used as the reducing agent in chemical reactions Technical index（HG/T2520-93）： Index name product grade Best quality Best quality first grade main content（H3PO3） 99 98.5 98 Fe（Fe） 0.001 0.0015 0.0020 chloride（Cl） 0.008 0.01 0.01 sulphate（SO4） 0.001 0.002 0.002 phosphate（PO4） 0.1 0.2 0.2 Appearance white crystal water solution test bright and colorless
CAS NO:13598-36-2
EC NO:237-066-7
Molecular Formula:H3PO3
Molecular Weight:81.9957
Synonyms:;Phosphonic acid;hydrogen phosphonate;phosphorus(+3) trihydride cation trihydroxide;Orthophosphorus;Orthophosphorous acid;Ortho-Phosphorous acid;
Molecular Structure:
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