| Customization: | Available |
|---|---|
| CAS No.: | 7664-38-2 |
| Formula: | H3po4 |
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Basic Information
Product Name: Phosphoric Acid
CAS No.:7664-38-2
Molecular FormulaH3PO4
Molar Mass:97.994 g/mol
Physical Properties
Appearance:Pure product is a colorless, transparent viscous liquid (≥85% concentration) or orthorhombic crystals (solidifies at low temperatures).
Melting Point: 42.35 °C (pure, 100% concentration).
Boiling Point:Decomposes at 213 °C to pyrophosphoric acid (H4P2O7); the boiling point of high-concentration solutions (e.g., 85%) is approximately 158 °C.
Density:1.834 g/mL (pure, 25 °C); the density of an 85% aqueous solution is about 1.685 g/mL.
Solubility:Miscible with water and ethanol in any proportion; insoluble in organic solvents (e.g., diethyl ether, benzene).
Hygroscopicity: Highly concentrated phosphoric acid is hygroscopic and must be stored in a sealed container.
Odor: Odorless; concentrated solutions have a strong acidic smell and are corrosive to skin and mucous membranes.
Applications
Phosphoric acid is a vital chemical raw material widely used in the following industries:
Food and Beverage Industry
Acidulant:Used in soft drinks (e.g., cola) and juices to adjust acidity (e.g., the "phosphoric acid flavor" in Coca-Cola).
Food Additives:Functions as a leavening agent (e.g., baking powder), chelating agent (e.g., meat preservation), and nutrient fortifier (e.g., infant formula).
Safety Standards:Food-grade phosphoric acid must comply with standards such as GB 31634 and FDA, with a purity of ≥85% and strict limits on heavy metal content.
Agriculture and Fertilizer Industry
Phosphate Fertilizer Production:A core raw material for manufacturing compound fertilizers such as ammonium dihydrogen phosphate (NH4H2PO4) and diammonium phosphate ((NH4)2HPO4).
Feed Additives:Used in livestock and poultry feed to supplement phosphorus and promote bone development (e.g., calcium hydrogen phosphate).
Industrial and Chemical Industry
Metal Treatment:Acts as a rust inhibitor and phosphating agent for steel surfaces (forming a protective iron phosphate film).
Flame Retardants:Used in plastics and coatings (e.g., phosphate ester flame retardants).
Electrochemical Polishing:Serves as an electrolyte in aluminum processing to improve surface gloss.
Pharmaceuticals and Cosmetics:Used in dental adhesives, antacids (e.g., aluminum phosphate), and pH regulators in skincare products.
Water Treatment and Environmental Protection
Water Treatment Agents:Used as an auxiliary for flocculants or to remove metal ions (e.g., Ca², Mg²) from wastewater.
Boiler Scale Removal:Reacts with calcium carbonate in scale to form soluble calcium phosphate, clearing pipeline deposits.
Safety and Storage
Hazards
Health Risks:
Contact with concentrated solutions can cause severe burns to skin or eyes (immediately flush with plentiful clean water for at least 15 minutes).
Inhalation of vapors irritates the respiratory tract, causing coughing and difficulty breathing; ingestion corrodes the digestive tract.
Fire and Explosion Risks:Non-combustible, but reactions with metals may release hydrogen gas (explosive when exposed to open flames).
GHS Classification:
H314:Causes severe skin burns and eye damage.
H335:May cause respiratory irritation.
Safety Measures
Protective Equipment:Wear acid-resistant gloves, goggles, and corrosion-resistant workwear; operate in a well-ventilated area or fume hood.
Storage Requirements:
Store in a sealed container in a cool, dry place, away from metals, alkalis, and flammables.
Separate food-grade and industrial-grade phosphoric acid to avoid contamination.
Use polyethylene plastic barrels or steel containers lined with rubber (concentrated phosphoric acid passivates iron, allowing short-term storage).
Emergency Handling
For leaks, absorb with inert materials (e.g., sand), then flush with copious water (take care to prevent acidic wastewater from polluting water sources); for large spills, dam and contain the area and contact professional disposal services.
| Liquid products | Drum of 5kg ,10 kg ,25 kg ,50 kg 200 kg ,250 kg . 1000 kg IBC drum. TANK with 20 tons ,25 tons . |
| Solid products | Bag of 1 kg ,2 kg ,5 kg ,25 kg ,500kg ,1000 kg . Drum of 25 kg and 50 kg. |
Packaging can be customized according to customer requirements.
Qingdao Jinyu Chemical Co., LTD,which is located in Qingdao City, China, with registered capital of RMB 10 million, is a dynamic chemical import and export enterprise with customer demand as its own responsibility. The founder has been engaged in the chemical industry for more than 20 years. With professional technical and marketing personnel, diversified cooperative factories with synthetic technology and efficient logistics management, we provide services to customers all over the world. After years of hard work, we have selected a number of excellent chemical production cooperative enterprises in China. These enterprises have their own advantages in different chemical synthesis fields. They have passed the strict inspection of suppliers by many customers and formed a long-term and stable strategic partnership with customers. With our partners' excellent equipment, well-trained employees and mature technology, we also continue to provide customers with more products.
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