Phosphorous acid|13598 -36-2--Nantong ShengFeng Chemical Co.,Ltd.

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Phosphorous acid

CAS No.:

13598 -36-2

Physical and chemical property :

(1) classified information

Chinese name: phosphite
English name: Phosphorous acid
Molecular formula: H₃PO₃
Molecular weight: 82
CAS Number :13598 -36-2
UN Number: 2834
IMDG Code: 81502
Hazard Class: 8

(2) physical and chemical properties

Appearance: white crystal
Melting point: 73.6 ° C
Boiling point: 200 ° C (decomposition)
Solubility: soluble in water, alcohol, strong hygroscopicity.
Density: 1.651g/cm ³
Hazardous characteristics: corrosive, thermal decomposition of the highly toxic gas.

(3) quality indicators

HG/T2520-2006

Test items	Class			Liquid phosphite
Test items	Superior product	First grade	Qualified products	Liquid phosphite
Appearance	White crystals			Colorless transparent liquid
Main content of (H₃PO₃ total) ≥%	99	98.5	98	80±0.5
Iron content (Fe) ≤% ≤%	0.0005	0.003	0.005	0.01
Chlorine content (Cl) ≤%	0.005	0.01	0.02	--
Sulfuric acid (SO₄) ≤%	0.001	0.008	0.01	0.02
Phosphoric acid content of (PO₄ dollars) ≤%	0.1	0.2	0.2	0.8
Heavy metals (as Pb) ≤%	0.0002	0.001	0.002	0.005
Dissolved in water test (70% aqueous solution)	Colorless and transparent without visible impurities			---

Purposes: for plastic stabilizers and production of synthetic fiber and phosphite raw materials and pesticides glyphosate, ethylene intermediates, can also be used to produce highly efficient water treatment agent, ATMP and Asia potassium dihydrogen phosphate
Packing: 25KG plastic woven bag (or according to customer design packing).
Safety: Avoid and H blowing agent such as a total storage mixed operation is strictly prohibited contact with skin or eyes.

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