Phosphorous acid

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Industry Category:	Chemicals/Chemical Intermediates/Intermediate Compounds
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Description

Additional Information

Chinese Name:	Phosphorous acid
Chinese Alias:	Hydrogen phosphonate; Aqueous phosphorous acid
English Name:	Phosphorous acid
English Alias:	Phosphonic acid; hydrogen phosphonate; phosphorus(+3) trihydride cation trihydroxide; Orthophosphorus; Orthophosphorous acid; Ortho-Phosphorous acid
CAS No.:	13598-36-2
EINECS No.:	237-066-7
Molecular Formula:	H₃PO₃
Molecular Weight:	81.9957
InChI:	InChI=1/3H2O.H3P/h3*1H2;1H3/q;;;+3/p-3
Molecular Structure:
Melting Point:	73℃
Water Solubility:	SOLUBLE

Physicochemical Properties:

Colorless crystals.

Product Usage:

Used as a reducing agent, nylon whitening agent, also as a raw material for phosphites and pesticide intermediates

Hazard Symbol:	C:Corrosive;
Risk Phrases:	R22:; R35:;
Safety Phrases:	S26:; S36/37/39:; S45:;
Upstream Raw Materials:	Phosphorus trichloride
Downstream Products:	Phosphine, Glyphosate aqueous solution (10%), Glyphosate, Glyphosate (10% ammonium salt aqueous solution), Dibasic lead phosphite, Polyamino polyether methylene phosphonic acid, 2-Hydroxyphosphonoacetic acid, Diethylenetriamine penta(methylene phosphonic acid)

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