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Phosphoric acid (orthophosphoric acid, monophosphoric acid or phosphoric(V) acid) is a colorless, odorless phosphorus-containing solid, and inorganic compound with the chemical formula H 3 P O 4. It is commonly encountered as an 85% aqueous solution , which is a colourless, odourless, and non- volatile syrupy liquid.
Since the ends are condensed, its formula has one less H 2 O (water) than tripolyphosphoric acid. The general formula of a phosphoric acid is H n−2x+2 P n O 3n−x+1, where n is the number of phosphorus atoms and x is the number of fundamental cycles in the molecule's structure; that is, the minimum number of bonds that would have to be ...
Caustic soda, sodium cyanide, sodium ferrocyanide, hydrochloric acid, chloromethanes, caustic potash, potassium carbonate, phosphoric acid (85%) and hydrogen peroxide. Revenue ₹ 3,762.2 crore (US$430 million) (2022) [1]
Triammonium phosphate can be prepared in the laboratory by treating 85% phosphoric acid with 30% ammonia solution: [citation needed] H 3 PO 4 + 3 NH 3 → (NH 4) 3 PO 4 (NH 4) 3 PO 4 is a colorless, crystalline solid. The solid, which has the odor of ammonia, is readily soluble in water. The salt converts to diammonium hydrogen phosphate (NH 4 ...
Formic acid a. with not less than 10% but not more than 85% acid by mass, or, b. with not less than 5% but not more than 10% acid by mass UN 3413: 6.1: Potassium cyanide solution UN 3414: 6.1: Sodium cyanide solution UN 3415: 6.1: Sodium fluoride solution UN 3416: 6.1: Chloroacetophenone, liquid UN 3417: 6.1: Xylyl bromide solution UN 3418: 6.1 ...
Phosphate conversion coating is a chemical treatment applied to steel parts that creates a thin adhering layer of iron, zinc, or manganese phosphates to improve corrosion resistance or lubrication or as a foundation for subsequent coatings or painting.
Example of phosphoric acid production. Wet-process phosphoric acid is prepared by adding sulfuric acid (H 2 SO 4) to apatite or tricalcium phosphate rock resulting in the following reaction: 3 H 2 SO 4 + Ca 3 (PO 4) 2 + 6 H 2 O ↔ 2 H 3 PO 4 + 3 CaSO 4 •2H 2 O Wet-process acid has to be purified by removing fluorine and other undesirable ...
In laboratories, copper phosphate is prepared by the addition of phosphoric acid to an alkali copper salt such as copper hydroxide, or basic copper carbonate. 3 Cu(OH) 2 + 2 H 3 PO 4 → 6 H 2 O + Cu 3 (PO 4) 2 3 Cu 2 (OH) 2 CO 3 + 4 H 3 PO 4 → 2 Cu 3 (PO 4) 2 + 3 CO 2 + 9 H 2 O