Phosphorous acid
High-Quality Phosphorous Acid for Industrial and Agricultural Applications
Phosphorous acid (H3PO3) is a valuable chemical compound with extensive applications across multiple industries. Our premium-grade Phosphorous acid meets the highest quality standards, offering exceptional purity and performance for your specific needs.
Product Specifications
- Chemical Formula: H3PO3
- Molecular Weight: 82.00 g/mol
- Appearance: White crystalline solid
- Purity: ≥99% (ACS Grade)
- Solubility: Highly soluble in water
- Melting Point: 73.6°C (164.5°F)
- Density: 1.651 g/cm3 at 21°C
- pH Level: 1.5 (10% aqueous solution)
Packaging Options
| Package Type | Weight | Container Material | Units per Pallet |
|---|---|---|---|
| Drums | 50 kg | Plastic (HDPE) | 20 |
| Bags | 25 kg | Multi-layer lined | 40 |
| IBC Totes | 1000 kg | Stainless steel | 1 |
| Custom Packaging | Variable | Customer specification | N/A |
Key Applications of Phosphorous Acid
Phosphorous acid serves as a vital component in numerous industrial processes:
- Agriculture: Used as a fungicide and plant nutrition supplement
- Chemical Synthesis: Intermediate for phosphite salts and esters
- Water Treatment: Effective in controlling scale formation
- Plastic Manufacturing: Flame retardant and stabilizer
- Pharmaceuticals: Precursor for various medicinal compounds
Phosphorous Acid Safety Information
| Safety Parameter | Rating/Value |
|---|---|
| LD50 (Oral, Rat) | 1,450 mg/kg |
| Flash Point | Non-flammable |
| Storage Temperature | 15-25°C (59-77°F) |
| Handling Precautions | Use PPE (gloves, goggles, mask) |
| First Aid Measures | Rinse with water if contact occurs |
Phosphorous Acid FAQ
What is the shelf life of Phosphorous acid?
When stored properly in its original sealed containers at recommended temperatures, Phosphorous acid maintains its quality for up to 24 months from production date. Store in a cool, dry place away from direct sunlight and incompatible materials.
How does Phosphorous acid differ from Phosphoric acid?
While both are phosphorus-containing acids, Phosphorous acid (H3PO3) has different chemical properties and applications compared to Phosphoric acid (H3PO4). Phosphorous acid contains phosphorus in the +3 oxidation state and is primarily used as a reducing agent, while phosphoric acid contains phosphorus in the +5 oxidation state and is more commonly used in fertilizers and food applications.
What safety precautions should be taken when handling Phosphorous acid?
Always wear appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Handle in well-ventilated areas and avoid creating dust or aerosols. In case of skin contact, immediately wash with plenty of water for at least 15 minutes. For eye contact, rinse cautiously with water for several minutes and seek medical attention.
Technical Data Comparison
| Parameter | Standard Grade | Premium Grade | Industrial Grade |
|---|---|---|---|
| Purity (%) | ≥97 | ≥99 | ≥95 |
| Water Content (%) | ≤0.5 | ≤0.2 | ≤1.0 |
| Chloride (ppm) | ≤100 | ≤50 | ≤200 |
| Sulfate (ppm) | ≤200 | ≤100 | ≤300 |
For optimal performance in sensitive applications, we recommend our Premium Grade Phosphorous acid, which undergoes additional purification steps to ensure exceptional chemical consistency and minimal impurity levels.