Phosphorous acid CAS 13598-36-2

Phosphorous acid CAS 13598-36-2

ItemA GradeB GradeC Grade
Main Content(based on H3PO3 ) (%)≥ 99.0≥ 98.5≥ 97.0
Chloride Content(based on CL) (%)≤ 0.001≤ 0.01≤ 0.02
Iron Content(based on Fe) (%)≤ 0.0005≤ 0.001≤ 0.005
Phosphate Content(based on PO4) (%)≤ 0.1≤ 0.2≤ 0.6
Sulfate Content(based on SO4) (%)≤ 0.0005≤ 0.008≤ 0.01
AppearancePure white crystalWhite crystalWhite crystal

 

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Description

Phosphorous acid, molecular formula H3PO3, colorless crystal, is one of the oxyacids of phosphorus and is a weak binary acid. Phosphorous acid has reducibility and can easily reduce Ag+ to metal silver. It can also reduce sulfuric acid to sulfur dioxide. It is corrosive and has hygroscopicity.

  • CAS:13598-36-2
  • Molecular Formula:H3O3P
  • Molecular Weight:82
  • EINECS:237-066-7
  • Stability: Stable. Incompatible with strong bases. Hygroscopic.

Phosphorous acid Specification:

ItemA GradeB GradeC Grade
Main Content(based on H3PO3 ) (%)≥ 99.0≥ 98.5≥ 97.0
Chloride Content(based on CL) (%)≤ 0.001≤ 0.01≤ 0.02
Iron Content(based on Fe) (%)≤ 0.0005≤ 0.001≤ 0.005
Phosphate Content(based on PO4) (%)≤ 0.1≤ 0.2≤ 0.6
Sulfate Content(based on SO4) (%)≤ 0.0005≤ 0.008≤ 0.01
AppearancePure white crystalWhite crystalWhite crystal

 

Phosphorous acid Application:

1. It is the raw material for manufacturing phosphite, and also the raw material for manufacturing plastic stabilizers (such as dibasic lead phosphite) and organophosphorus pesticides. Used as a stabilizer for polycarbonate. Also used as an antioxidant for nylon 1010.
2. Used as a chemical reagent
3. Water treatment

Phosphorous acid Packaging Details

25kg/500kg/1000kg in woven bag lined with double layer polythene bag

Flammability hazard characteristics:

In case of H, the pore-forming agent is flammable; when heated, it decomposes toxic phosphorus oxide fumes

Storage and transportation characteristics:

The warehouse is ventilated, low-temperature and dry; store it separately from H pore-forming agent and alkali.

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