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Phosphorous Acid (H₃PO₃) 

Solid Phosphorous Acid
Phosphorous Acid ≥ 99.0%
Phosphate ≤ 0.1%
Chloride ≤ 0.005%
Sulfate ≤ 0.0001%
Heavy Metals (as Lead) ≤ 0.0002%
Iron ≤ 0.001%

Liquid Phosphorous Acid
Phosphorous Acid Content ≥70%; ≥ 80%
Chloride ≤0.001%
Sulfate ≤0.005%
Phosphate ≤0.1%
Heavy Metals (as Pb) ≤0.001%
Iron ≤0.001%

Product Overview

Phosphorous Acid (H₃PO₃) is a high-purity, industrial-grade raw material widely used in the production of phosphite salts such as Potassium Phosphite (K₂HPO₃ / KH₂PO₃) and other P-containing specialty fertilizers. It serves as the key precursor for manufacturing high-efficiency phosphite nutrients, known for fast plant uptake and strong mobility within plant tissues.

With excellent solubility, high stability, and consistent purity, Phosphorous Acid is the preferred material for fertilizer manufacturers, agrochemical formulators, and industrial chemical processors.


Key Features of Phosphorous Acid

  • High purity and stable chemical quality
  • Excellent solubility for industrial formulation
  • Essential precursor for phosphite-based fertilizers
  • Suitable for clear liquid fertilizer manufacturing
  • Consistent performance in large-scale production
  • Strong reducing properties for various chemical processes

Applications of Phosphorous Acid

1. Fertilizer Manufacturing

Phosphorous Acid is primarily used to produce:

  • Potassium Phosphite (K₂HPO₃)
  • Potassium Dihydrogen Phosphite (KH₂PO₃)
  • Other phosphite nutrient solutions

These phosphite products are widely used for:

  • Liquid fertilizer production
  • Foliar PK formulations
  • High-efficiency nutrient blends

2. Industrial Uses

  • Chemical synthesis
  • Reducing agent in organic reactions
  • Metal surface treatment

Agronomic Relevance

While Phosphorous Acid itself is not applied directly to crops, it plays a crucial role in producing phosphite fertilizers that support:

  • Fast P–K uptake
  • Root development
  • Improved nutrient efficiency
  • Enhanced crop stress resistance

Packaging

  • 25 kg bags500 kg / 1 MT jumbo bags
  • 1L, 5L, 20L 200L / IBC tank
  • OEM packaging available upon request
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