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Phosphorous acid
Bromopropane(NBP)
2-Bromopropane,isopropyl br
1-Bromobutane
Monopotassium phosphite,Pot
Dipotassium hydrogen phosph
Diammonium hydrogen phosphi
Calcium phosphite
Disodium hydrogen phosphite
 
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Phosphorous acid

(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
Superior product First grade Qualified products
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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