12735-97-6

Basic information

• Product Name: ammophos
• Synonyms: ammophos
• CAS NO: 12735-97-6
• Molecular Weight: 0
• Mol File: 12735-97-6.mol
• Article Data: 0

Chemical Properties

• Appearance: /
• CAS DataBase Reference: ammophos(CAS DataBase Reference)
• NIST Chemistry Reference: ammophos(12735-97-6)
• EPA Substance Registry System: ammophos(12735-97-6)

Safety Data

• Hazardous Substances Data: 12735-97-6(Hazardous Substances Data)

Usage

Agricultural Uses

Ammophos is the trade name of one of the most popular brands of ammonium phosphate fertilizers. It contains 16% nitrogenand 20% phosphorus (as P2O5). Ammophos is made by ammoniating a mixture of sulphuric and phosphoric acids. After ammoniation, the slurry formed is granulated in a pugmill or a drum unit, dried, and screened to give a product that is two-thirds by weight of ammonium sulphate and one-third that of ammonium phosphate. This water-soluble product has good storage properties. Two grades of ammonium phosphate are known. One contains 11 % nitrogen and 48 % phosphorus (as P2O5), the other contains 16.5% nitrogen and 20% phosphorus (as P2O5). The first grade is made by neutralizing phosphoric acid with ammonia, and the other is made by neutralizing a mixture of phosphoric and sulphuric acids with ammonia. The first grade of ammophos has a theoretical lime requirement of 5 kg of calcium carbonate per kg of fertilizer, which indicates the acid forming nature of the fertilizer. Ammonium dihydrogen phosphate sulphate is also called ammoniated sulphate. It is a double salt of ammonium dihydrogen phosphate, NH4(H2PO4) and ammonium sulphate, (NH4)2SO4, and is formed by neutralizing a mixture of sulphuric acid and phosphoric acid by gaseous ammonia.