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

HS v2017 Code: 283531

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

HS code 283531 covers polyphosphates, a class of inorganic compounds that play a vital role in various industries. Polyphosphates, including sodium triphosphate (sodium tripolyphosphate), are widely used as water softeners, detergent builders, food additives, and in numerous industrial applications. This code is essential for understanding the global trade and production of these versatile chemicals, which are integral to the broader chemical and manufacturing sectors.

Production process

Polyphosphates are typically produced through the reaction of phosphoric acid with various metal oxides or hydroxides. The specific production process for sodium triphosphate (sodium tripolyphosphate) involves the condensation of orthophosphates, often using sodium hydroxide as a reactant. The resulting polyphosphate compound is then purified and processed to meet the desired specifications for various end-uses.

Production inputs

The main inputs required for the production of polyphosphates under HS code 283531 include phosphoric acid, sodium hydroxide, and other metal oxides or hydroxides. Additionally, specialized equipment such as reactors, evaporators, and drying systems are necessary to facilitate the chemical synthesis and purification processes. Energy sources, such as electricity or steam, are also important inputs for the manufacturing of these inorganic compounds.

Production outputs

The primary output of HS code 283531 is polyphosphates, including sodium triphosphate (sodium tripolyphosphate). These compounds find widespread application in various industries, such as 340300 Lubricating preparations, 340220 Cleaning preparations, 210690 Food preparations, and 283699 Other inorganic compounds. Polyphosphates are also used in water treatment, metal processing, and as flame retardants, making them an essential component in numerous supply chains.

Revisions to 283531

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 283531. The most recent 1 version of this code (283531) is in the HS v2022 system:

This page shows a legacy version of code 283531 ( HS v2017).

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

    graph LR
    A["<a href='/classifications/hs/v2017/28'>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/v2017/2835'>2835: Phosphinates (hypophosphites), phosphonates (phosphites), and phosphates; and polyphosphates, whether or not chemically defined</a>"]
B --> C["<a href='/classifications/hs/v2017/283531'>283531: Polyphosphates; sodium triphosphate (sodium tripolyphosphate), whether or not chemically defined</a>"]

    B --> D["<a href='/classifications/hs/v2017/283510'>283510: Phosphinates (hypophosphites) and phosphonates (phosphites), whether or not chemically defined</a>"]
B --> E["<a href='/classifications/hs/v2017/283522'>283522: Phosphates; of mono- or disodium, whether or not chemically defined</a>"]
B --> F["<a href='/classifications/hs/v2017/283524'>283524: Phosphates; of potassium, whether or not chemically defined</a>"]
B --> G["<a href='/classifications/hs/v2017/283525'>283525: Phosphates; calcium hydrogenorthophosphate (dicalcium phosphate), whether or not chemically defined</a>"]
B --> H["<a href='/classifications/hs/v2017/283526'>283526: Phosphates; of calcium n.e.c. in item no. 2835.25, whether or not chemically defined</a>"]
B --> I["<a href='/classifications/hs/v2017/283529'>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/v2017/283539'>283539: Polyphosphates; other than sodium triphosphate (sodium tripolyphosphate), whether or not chemically defined</a>"]

    

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