Alums

HS v2017 Code: 283330

About alums

HS code 283330 covers the classification of 'Alums'. Alums are a group of chemical compounds that have a wide range of industrial applications, from water treatment to the production of various consumer goods. As an important class of inorganic salts, alums play a crucial role in the global chemical industry and international trade.

Production process

Alums are typically produced through a process of chemical synthesis. The key steps involve the reaction of an aluminum compound, such as aluminum sulfate or aluminum hydroxide, with an appropriate sulfate or other acid. The resulting solution is then crystallized to form the desired alum compound. Careful control of temperature, pH, and other parameters is essential to ensure the production of high-quality alums.

Production inputs

The main inputs required for the production of alums include aluminum-containing raw materials, such as bauxite or aluminum hydroxide, as well as sulfuric acid or other acids. Additionally, the production process may require specialized equipment, such as reaction vessels, crystallization tanks, and drying/packaging machinery.

Production outputs

The primary outputs of the alums industry are the various alum compounds, which have a wide range of applications. These include 282520 Aluminum Sulfate, 282519 Other Aluminum Oxides and Hydroxides, and 283329 Other Alums. Alums are commonly used in water treatment, paper manufacturing, textile dyeing, and the production of various chemicals and consumer products.

Revisions to 283330

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 283330. The most recent 1 version of this code (283330) is in the HS v2022 system:

This page shows a legacy version of code 283330 ( HS v2017).

Newer versions
Older versions

Family tree for alums

    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/v2017/2833'>2833: Sulphates; alums; peroxosulphates (persulphates)</a>"]
B --> C["<a href='/classifications/hs/v2017/283330'>283330: Alums</a>"]

    B --> D["<a href='/classifications/hs/v2017/283311'>283311: Sodium sulphates; disodium sulphate</a>"]
B --> E["<a href='/classifications/hs/v2017/283319'>283319: Sodium sulphates; other than disodium sulphate</a>"]
B --> F["<a href='/classifications/hs/v2017/283321'>283321: Sulphates; of magnesium</a>"]
B --> G["<a href='/classifications/hs/v2017/283322'>283322: Sulphates; of aluminium</a>"]
B --> H["<a href='/classifications/hs/v2017/283324'>283324: Sulphates; of nickel</a>"]
B --> I["<a href='/classifications/hs/v2017/283325'>283325: Sulphates; of copper</a>"]
B --> J["<a href='/classifications/hs/v2017/283327'>283327: Sulphates; of barium</a>"]
B --> K["<a href='/classifications/hs/v2017/283329'>283329: Sulphates; n.e.c. in item no. 2833.2</a>"]
B --> L["<a href='/classifications/hs/v2017/283340'>283340: Peroxosulphates (persulphates)</a>"]

    

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class E level6
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class G level6
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class I level6
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