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

HS v2022 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, and food additives, making them an essential component in numerous consumer and industrial products. This code's importance extends across diverse sectors, from household cleaning to water treatment and beyond, highlighting its significance in the broader global economy.

Production process

The production of polyphosphates, such as sodium triphosphate, typically involves a multi-step process. It begins with the reaction of phosphoric acid and sodium hydroxide, which yields sodium phosphate. This sodium phosphate is then further processed through dehydration and condensation reactions to form the desired polyphosphate compounds. The specific techniques may vary depending on the desired purity, molecular structure, and other product specifications.

Production inputs

The primary inputs required for the production of polyphosphates under HS code 283531 include phosphoric acid, sodium hydroxide, and various other chemicals and catalysts necessary for the condensation and purification processes. Additionally, specialized equipment, such as reactors, evaporators, and drying systems, are essential for the efficient and controlled manufacturing of these compounds.

Production outputs

The main outputs of the industry covered by HS code 283531 are polyphosphates, including sodium triphosphate (sodium tripolyphosphate). These compounds find widespread application in a variety of industries, such as 340300 Lubricating preparations, 340220 Surface-active preparations, 283650 Phosphates, polyphosphates, and 210690 Food preparations not elsewhere specified or included, where they serve as water softeners, detergent builders, and food additives, among other uses.

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 version):

This page shows the most recent version of code 283531.

Family tree for polyphosphates; 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/v2022/283531'>283531: Polyphosphates; 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/v2022/283539'>283539: Polyphosphates; other than sodium triphosphate (sodium tripolyphosphate), whether or not chemically defined</a>"]

    

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