Phosphoric acid or orthophosphoric acid, the chemical formula H3PO4, has a molecular weight of 97.994, is a common inorganic acid and is a medium strong acid. It can be obtained by dissolving phosphorus pentoxide in hot water. The orthophosphoric acid industry is treated with sulfuric acid to obtain apatite. Phosphoric acid is easily deliquescent in the air. Heating will lose water to get pyrophosphoric acid, and further lose water to get metaphosphoric acid. Phosphoric acid is mainly used in the pharmaceutical, food, fertilizer and other industries, including as a rust inhibitor, food additive, dental and orthopedics, EDIC corrosives, electrolytes, fluxes, dispersants, industrial corrosives, fertilizer raw materials and components household cleaning products. It can also be used as a chemical reagent, and phosphate is a nutrient for all life forms.
Chemical formula H3PO4 Molecular weight 98 CAS accession number 7664-38-2 EINECS accession number 231-633-2 Melting point 42 °C boiling point 261 °C (decomposition) Water solubility Intermixing with water at any ratio Density 1.874g/mL (liquid)
The warehouse is ventilated and dried at low temperature; it is stored separately from the H porogen and alkali.
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