10294-56-1 purity 98% Phosphorous acid prompt delivery

Basic Information

• CAS No.: 13598-36-2
• Molecular Formula: H₃PO₃
• Molecular Weight: 82.00 g/mol
• EINECS No.: 237-066-7
• UN No.: 2834 (Class 8 Corrosive Substance)
• Appearance: White or colorless deliquescent crystals, garlic-like odor
• Structure: O=P(OH)₂H (diprotic acid, one P–H bond, reducing property)
  
  
  Applications

  1. Water Treatment: Raw material for phosphonates (ATMP, HEDP, PBTC) as scale/corrosion inhibitors
  2. Agrochemicals: Intermediate for glyphosate herbicide (PMIDA) and phosphite fertilizers
  3. Chemical Synthesis: Reducing agent; raw material for phosphite salts (K₃PO₃, (NH₄)₃PO₃)
  4. Textile Industry: Nylon brightener, bleaching & reducing agent
  5. Electroplating & Metal Treatment: Reducing agent for metal surface conditioning
  6. Pharmaceuticals & Dyes: Intermediate for organic synthesis and dye manufacturing

  
  

  Storage Conditions

  1. Store in cool, dry, well-ventilated warehouse (temperature ≤30 °C)
  2. Keep tightly sealed to prevent moisture absorption and deliquescence
  3. Separate from oxidizing agents, strong bases, food chemicals; avoid mixed storage
  4. Protect from direct sunlight, heat sources and mechanical impact
  5. Avoid long-term storage in air (slowly oxidizes to phosphoric acid)
  6. Shelf life: 12 months (unopened original packaging)

  
  

  Quality Standard

  1. Assay (H₃PO₃): ≥98.0% (First Grade), ≥99.0% (Superior Grade)
  2. Inorganic Impurities:
     • Phosphate (PO₄³⁻): ≤0.2% (First Grade)
     • Chloride (Cl⁻): ≤0.01% (First Grade)
     • Sulfate (SO₄²⁻): ≤0.01% (First Grade)
     
     
  3. Heavy Metals & Iron:
     • Iron (Fe): ≤0.002% (First Grade)
     • Lead (Pb): ≤0.001%
     
     
  4. Moisture: ≤0.3% (First Grade)

Company Profile

Suqian City Hengliyuan import and Export Trade Co, LTD is a trad i ng company. The company has introduced advanced scientific and technological achievements

from home and abroad, and has superior products from well-known manufacturers at home and abroad. The basic functions are:1, Domestic trade of various

chemical raw materials 2, Providing price information services and chemical raw materials procurement for industrial enterprises 3, Cooperating with Chinese

state-owned enterprise factories, the price and quality are very advantageous. At present, the company is relying on the combination of industry and trade and

global procureme nt  to steadily improve the company's value-added ability and compound competitivene s s. We have a l ways been committed to producing high

quality and cost-competitive products , so we have been sincerely recognized by many customers. Our goal is to produce the best products and satisfy every  

customer with professional services and attitudes. We look forward to cooperating with you .