Phosphorous acid
Category: Phosphorous Acid  Publish Time: 2019-10-08 14:08 
  

Properties: Phosphorous acid is a colorless crystal. It can be slowly oxidized to phosphoric acid in the air. When heated to 180 °C, it can be decomposed into phosphoric acid and phosphine (highly toxic). As a dibasic acid, it has slightly ber acidity than phosphoric acid. Phosphorous acid has b reducibility and can easily reduce Ag+ to metal silver. It can also reduce sulfuric acid to sulfur dioxide. It is corrosive and has b hygroscopicity.

Relative Density: 1.651 (21.1 °C)

Melting Point: 73.6 °C

Boiling Point: 200 °C (Decomposes)

Solubility: Easily soluble in water and alcohol.

 

Molecular formula:   H3PO3

 

Use: Phosphorous acid is mainly used in the manufacture for phosphates, synthetic fibers and organophosphorus pesticides, etc. It is also used in producing high performance water treating agent ATMP. It’s used as reducing agent in chemical reaction.

 

Specification:

Analysis

Top Grade

First Grade I

Assay  (%)

99.0 Min

98.5 Min

Iron (Fe)  PPM

10 Max

30 Max

Chloride (Cl) %

0.01 Max

0.01Max

Sulphate (SO4 )%

0.005 Max

0.008 Max

Phosphate (PO4) %

0.1 Max

0.2 Max

Appearance

White Crystalline

White Crystalline

70% Aqueous Solution Test

Colorless transparent

--

Arsenic(As) %

0.0008max

--

Mercury (Hg)%

0.0001max

 

Lead (Pb)%

0.002max

 

Cadmium (Cd)%

0.0012max

 

Chromium (Cr)%

0.002max

 

Nickel(Ni)%

0.003max

 

 

Packing: 25kg poly bags. 1mt super sacs.