Monoammonium phosphate Hs Code

Monoammonium phosphate harmonized system code

Product Overview Monoammonium phosphate (MAP), classified under HS Code 310540, is an inorganic compound primarily composed of ammonium dihydrogen phosphate (NH4H2PO4). This white, crystalline solid typically exhibits high water solubility and a purity level exceeding 98%, conforming to industrial-grade and food-grade specifications. It is produced through controlled chemical synthesis involving phosphoric acid and ammonia, followed by granulation or crystallization processes to achieve consistent particle size distribution and moisture content below 1.5%. Within HS Code 310540, MAP is categorized alongside other phosphatic fertilizers, with subheadings differentiating based on purity and formulation. Its principal commercial applications span agriculture as a widely used phosphate fertilizer, fire retardants in industrial safety, and food additives functioning as leavening agents and acidulants in food processing. The product’s competitive advantage lies in its dual-nutrient composition (nitrogen and phosphorus), facilitating efficient nutrient delivery and enhanced crop yield, supporting its prominent position in global fertilizer markets and related industrial sectors. HS Code Classification & Trade Specifications The full HS Code 310540 is structured hierarchically as follows: Chapter 31 (Fertilizers), Heading 3105 (Mineral or chemical fertilizers containing the two fertilizing elements nitrogen and phosphorus), and Subheading 310540 (Monoammonium phosphate). This classification is justified by MAP’s chemical composition containing both nitrogen and phosphorus, distinguishing it from other phosphate or nitrogen-only fertilizers. Trade considerations for MAP include packaging in moisture-resistant bags or bulk containers, typically ranging from 25 kg to 1,000 kg, to prevent caking and degradation during transit. Preservation protocols emphasize maintaining dry storage conditions and controlled humidity levels to uphold product integrity and compliance with ISO 9001 quality management standards. Shipping requirements align with international hazardous material regulations when applicable, given MAP’s fire retardant properties, ensuring safe handling and transport. The product meets WTO trade facilitation measures, with harmonized labeling and documentation to streamline customs clearance and support accurate tariff classification in global supply chains.

Monoammonium phosphate Chapter Note

1.- This Chapter does not cover : (a) Animal blood of heading 05.11; (b) Separate chemically defined compounds (other than those answering to the descriptions in Note 2 (a), 3 (a), 4 (a) or 5 below); or (c) Cultured potassium chloride crystals (other than optical elements) weighing not less than 2.5 g each, of heading 38.24; optical elements of potassium chloride (heading 90.01). 2.- Heading 31.02 applies only to the following goods, provided that they are not put up in the forms or packages described in heading 31.05 : (a) Goods which answer to one or other of the descriptions given below : (i) Sodium nitrate, whether or not pure; (ii) Ammonium nitrate, whether or not pure; (iii) Double salts, whether or not pure, of ammonium sulphate and ammonium nitrate; (iv) Ammonium sulphate, whether or not pure; (v) Double salts (whether or not pure) or mixtures of calcium nitrate and ammonium nitrate; (vi) Double salts (whether or not pure) or mixtures of calcium nitrate and magnesium nitrate; (vii) Calcium cyanamide, whether or not pure or treated with oil; (viii) Urea, whether or not pure. (b) Fertilisers consisting of any of the goods described in (a) above mixed together. (c) Fertilisers consisting of ammonium chloride or of any of the goods described in (a) or (b) above mixed with chalk, gypsum or other inorganic non-fertilising substances. (d) Liquid fertilisers consisting of the goods of subparagraph (a) (ii) or (viii) above, or of mixtures of those goods, in an aqueous or ammoniacal solution. 3.- Heading 31.03 applies only to the following goods, provided that they are not put up in the forms or packages described in heading 31.05 : (a) Goods which answer to one or other of the descriptions given below : (i) Basic slag; (ii) Natural phosphates of heading 25.10, calcined or further heat-treated than for the removal of impurities; (iii) Superphosphates (single, double or triple); (iv) Calcium hydrogenorthophosphate containing not less than 0.2 % by weight of fluorine calculated on the dry anhydrous product. (b) Fertilisers consisting of any of the goods described in (a) above mixed together, but with no account being taken of the fluorine content limit. (c) Fertilisers consisting of any of the goods described in (a) or (b) above, but with no account being taken of the fluorine content limit, mixed with chalk, gypsum or other inorganic non-fertilising substances. 4.- Heading 31.04 applies only to the following goods, provided that they are not put up in the forms or packages described in heading 31.05 : (a) Goods which answer to one or other of the descriptions given below : (i) Crude natural potassium salts (for example, carnallite, kainite and sylvite); (ii) Potassium chloride, whether or not pure, except as provided in Note 1 (c) above; (iii) Potassium sulphate, whether or not pure; (iv) Magnesium potassium sulphate, whether or not pure. (b) Fertilisers consisting of any of the goods described in (a) above mixed together.5.- Ammonium dihydrogenorthophosphate (monoammonium phosphate) and diammonium hydrogenorthophosphate (diammonium phosphate), whether or not pure, and intermixtures thereof, are to be classified in heading 31.05. 6.- For the purposes of heading 31.05, the term “other fertilisers” applies only to products of a kind used as fertilisers and containing, as an essential constituent, at least one of the fertilising elements nitrogen, phosphorus or potassium.