Phosphorous Acid

CAS Number: 10294-56-1

HS Code: 280920

Types of Packaging:

  • 25kg bag
  • 25kg drum
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Phosphorous Acid

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ITEM

RESULT

PHOSPHOROUS ACID

98.55%

CHLORIDE

0.01%Max

PHOSPHATE

0.1%Max

SULPHATE

0.006%Max

IRON

0.0015%

Heavy metals(as Pb)

0.001%Max

Pb

0.18mg/kg

Cd

0.005mg/kg

As

0.13mg/kg

Hg

1mg/kg

Cr

0.10mg/kg

Water-solubility

Excellent

Introduction to Phosphorous Acid:

  • Chemical Identity: Phosphorous Acid, with the chemical formula H3PO3, is an important inorganic compound in various industrial contexts.
  • Physical Characteristics: It typically appears as colorless crystals or a white, waxy solid that is deliquescent (capable of absorbing moisture from the environment).
  • Chemical Nature: This compound is a diprotic acid, meaning it can release two hydrogen ions in solution. Structurally, it contains one phosphorus atom bonded to two hydroxyl groups and one hydrogen atom.

Industrial and Commercial Applications:

  • Agriculture: One of the primary uses of phosphorous acid is in agriculture as a fungicide. It's particularly effective in controlling various oomycete pathogens found in crops.
  • Chemical Synthesis: It serves as a precursor for the synthesis of many phosphorus compounds, including phosphonates, which are used in detergents, water treatment, and as flame retardants.
  • Corrosion Inhibitor: In industrial settings, phosphorous acid is utilized as a corrosion inhibitor, particularly in cooling systems and hydraulic fluids.
  • Plastic Manufacturing: It plays a role in the production of plastic polymers, acting as a stabilizer to prevent degradation during processing.
  • Metallurgy: In metallurgy, phosphorous acid is used in the preparation of metal surfaces for plating and as an additive in some metalworking fluids.

Environmental and Safety Aspects:

  • Handling and Storage: Phosphorous acid needs to be handled with care due to its hygroscopic nature and potential corrosiveness in higher concentrations.
  • Environmental Impact: It must be managed carefully in agricultural applications to prevent potential environmental impacts, particularly in water systems.

Technological Advancements and Market Dynamics:

  • Innovative Agricultural Practices: There's an ongoing development in its agricultural application, focusing on more effective and environmentally sustainable fungicidal treatments.
  • Industrial Demand: The demand for phosphorous acid is closely linked to its diverse applications, with steady growth in sectors like agriculture, metallurgy, and plastic manufacturing.
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Phosphorous Acid