Polyphosphates; other than sodium triphosphate (sodium tripolyphosphate), whether or not chemically defined

HS v2022 Code: 283539

About polyphosphates; other than sodium triphosphate (sodium tripolyphosphate), whether or not chemically defined

HS code 283539 covers a range of polyphosphate compounds, excluding sodium triphosphate (sodium tripolyphosphate). These polyphosphates are widely used in various industries, including detergents, water treatment, food processing, and flame retardants. Their ability to sequester metal ions, control pH, and act as dispersants makes them essential ingredients in many industrial and consumer products. Understanding the production, inputs, and applications of these polyphosphates is crucial for businesses involved in the import/export of chemicals and related products.

Production process

Polyphosphates are typically produced through the reaction of phosphoric acid with various metal oxides or hydroxides. The specific production process can vary depending on the desired polyphosphate compound, but generally involves controlled heating, mixing, and purification steps to achieve the desired chemical composition and purity. Advanced techniques, such as continuous reactors and advanced separation methods, may be employed to optimize production efficiency and quality.

Production inputs

The main inputs required for the production of polyphosphates under HS code 283539 include phosphoric acid, various metal compounds (such as sodium, potassium, or ammonium compounds), and energy sources for the heating and processing steps. Specialized equipment, such as reactors, filtration systems, and drying units, are also essential for the manufacturing process. The availability and cost of these raw materials and equipment can significantly impact the overall production and trade of polyphosphates.

Production outputs

The polyphosphates produced under HS code 283539 have a wide range of applications. They are commonly used as 283691 water treatment chemicals, 340220 detergents, 350400 food additives, and 381800 flame retardants. These polyphosphates can also be used in the production of other chemical compounds, such as 283510 phosphates, 283522 phosphites, and 283529 phosphates. The specific end-use applications and downstream industries will depend on the chemical composition and properties of the polyphosphate products.

Revisions to 283539

Classification codes are adjusted frequently. The code may have been revised or replaced between system versions. The table below shows the history (newest to oldest) of the code 283539. The most recent 1 version of this code (283539) is in the HS v2022 system (this version):

This page shows the most recent version of code 283539.

Family tree for polyphosphates; other than sodium triphosphate (sodium tripolyphosphate), whether or not chemically defined

    graph LR
    A["<a href='/classifications/hs/v2022/28'>28: Inorganic chemicals; organic and inorganic compounds of precious metals; of rare earth metals, of radio-active elements and of isotopes</a>"]
A --> B["<a href='/classifications/hs/v2022/2835'>2835: Phosphinates (hypophosphites), phosphonates (phosphites), and phosphates; and polyphosphates, whether or not chemically defined</a>"]
B --> C["<a href='/classifications/hs/v2022/283539'>283539: Polyphosphates; other than sodium triphosphate (sodium tripolyphosphate), whether or not chemically defined</a>"]

    B --> D["<a href='/classifications/hs/v2022/283510'>283510: Phosphinates (hypophosphites) and phosphonates (phosphites), whether or not chemically defined</a>"]
B --> E["<a href='/classifications/hs/v2022/283522'>283522: Phosphates; of mono- or disodium, whether or not chemically defined</a>"]
B --> F["<a href='/classifications/hs/v2022/283524'>283524: Phosphates; of potassium, whether or not chemically defined</a>"]
B --> G["<a href='/classifications/hs/v2022/283525'>283525: Phosphates; calcium hydrogenorthophosphate (dicalcium phosphate), whether or not chemically defined</a>"]
B --> H["<a href='/classifications/hs/v2022/283526'>283526: Phosphates; of calcium n.e.c. in item no. 2835.25, whether or not chemically defined</a>"]
B --> I["<a href='/classifications/hs/v2022/283529'>283529: Phosphates; (other than of mono- or disodium, other than of potassium or of calcium hydrogenorthophosphate (dicalcium phosphate) and excluding other phosphates of calcium), whether or not chemically defined</a>"]
B --> J["<a href='/classifications/hs/v2022/283531'>283531: Polyphosphates; sodium triphosphate (sodium tripolyphosphate), whether or not chemically defined</a>"]

    

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