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ChemicalBook--->CAS DataBase List--->10294-56-1

10294-56-1

10294-56-1 Structure

10294-56-1 Structure
IdentificationBack Directory
[Name]

Phosphorous acid
[CAS]

10294-56-1
[Synonyms]

Phosphorou acid
Phosphorous acid
Orthophosphorus acid
Phosphorous acid 50% aqueous solution
Orthophosphorus acid ISO 9001：2015 REACH
[EINECS(EC#)]

233-663-1
[Molecular Formula]

H3PO3
[MOL File]

10294-56-1.mol
[Molecular Weight]

82
Chemical PropertiesBack Directory
[pka]

2.22±0.10(Predicted)
[CAS DataBase Reference]

10294-56-1
[NIST Chemistry Reference]

H3PO3(10294-56-1)
[EPA Substance Registry System]

Phosphorous acid(10294-56-1)
Safety DataBack Directory
[Symbol(GHS) ]


GHS07,GHS05
[Signal word ]

Danger
[Hazard statements ]

H302-H314
[Precautionary statements ]

P264-P270-P301+P312-P330-P501-P260-P264-P280-P301+P330+P331-P303+P361+P353-P363-P304+P340-P310-P321-P305+P351+P338-P405-P501
[Hazard Codes ]

Xn,C
[Risk Statements ]

22-35
[Safety Statements ]

1/2-26-36/37/39-45
[RIDADR ]

UN 2834
Hazard InformationBack Directory
[Uses]

Phosphorous acid is a reducer in chemical reactions and a raw material in the making of phosphorous acid salts. A plant defoliant.
[Definition]

A white crystalline solid. It is a monobasic acid forming the anion H2PO2- in water. The sodium salt, and hence the acid, can be prepared by heating yellow phosphorus with sodium hydroxide solution. The free acid and its salts are powerful reducing agents.
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