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Phosphoric acid
Classification:
Product Description
Specifications
| chinese alias | orthophosphoric acid |
|---|---|
| English Name | Phosphoric acid |
| Density | 1.874g/mL |
| Melting Point | 22℃ |
| Boiling Point | 261 ℃ |
| water soluble | Can be combined with water in any ratio |
| CAS Registry Number | 7664-38-2 |
| EINECS login number | 231-633-2 |
Basic information
Phosphoric acid or orthophosphoric acid, chemical formula H3PO4, molecular weight of 97.9724, is a common inorganic acid, is a strong acid. It can be obtained by dissolving phosphorus pentoxide in hot water. Orthophosphoric acid is obtained by treating apatite with sulfuric acid in industry. Phosphoric acid is easily deliquescent in air. Heating will lose water to obtain pyrophosphoric acid, and then further loss of water to obtain metaphosphoric acid. Phosphoric acid is mainly used in pharmaceutical, food, fertilizer and other industries, and can also be used as a chemical reagent.
Application areas
Agriculture: phosphoric acid is the production of important phosphate fertilizer (superphosphate, potassium dihydrogen phosphate, etc.) raw materials, but also the production of feed nutrients (calcium dihydrogen phosphate) raw materials.
Industry: phosphoric acid is an important chemical raw material, the main role is as follows:
1. Treat the metal surface to generate an insoluble phosphate film on the metal surface to protect the metal from corrosion.
2. Mixed with nitric acid as a chemical polishing agent to improve the smoothness of the metal surface.
3, the production of washing supplies, pesticides raw materials phosphate.
4. Raw materials for the production of phosphorus-containing flame retardants.
Food: phosphoric acid is one of the food additives, in food as a sour agent, yeast nutrition, cola contains phosphoric acid. Phosphate is also an important food additive as a nutritional enhancer.
Medicine: Phosphoric acid can be used to prepare phosphorus-containing drugs, such as sodium glycerophosphate.
Packaging, transportation and safety
Store in a cool and ventilated warehouse; Keep away from fire and heat source; The temperature of the warehouse shall not exceed 30 ℃, and the relative humidity shall not exceed 80%. The package is sealed; It should be stored separately from flammable materials, alkalis and active metal powder. Appropriate materials should be provided to accommodate leaks.
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