Thiosulphates

HS v2017 Code: 283230

About thiosulphates

HS code 283230 covers thiosulphates, a class of inorganic chemical compounds that play a vital role in various industrial processes and applications. Thiosulphates are widely used in the textile, photography, and mining industries, as well as in the production of pharmaceuticals and other chemicals. Their importance in the global economy stems from their versatility and their ability to facilitate a range of chemical reactions and processes.

Production process

Thiosulphates are typically produced through the reaction of sulfur dioxide (SO2) with an alkali metal hydroxide, such as sodium hydroxide (NaOH) or calcium hydroxide (Ca(OH)2). The resulting solution is then treated with sulfur to form the thiosulphate compound. The specific production techniques may vary depending on the desired end product and the scale of production.

Production inputs

The main inputs required for the production of thiosulphates include sulfur dioxide (SO2), alkali metal hydroxides (such as NaOH or Ca(OH)2), and sulfur. Additionally, various types of machinery and equipment, such as reactors, filtration systems, and drying equipment, are necessary for the production process. The availability and cost of these raw materials and resources can significantly impact the overall production and supply of thiosulphates.

Production outputs

The primary output of HS code 283230 is thiosulphates, which are then used as inputs for a variety of other industries and applications. Thiosulphates find use in the 540000 Textile Industry, where they are employed as reducing agents, bleaching agents, and dye fixatives. They are also used in the 370000 Photography Industry as fixing agents and in the 250000 Mining Industry as flotation agents. Additionally, thiosulphates are utilized in the production of 300000 Pharmaceutical Products and other chemical compounds.

Revisions to 283230

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 283230. The most recent 1 version of this code (283230) is in the HS v2022 system:

This page shows a legacy version of code 283230 ( HS v2017).

Newer versions
Older versions

Family tree for thiosulphates

    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/v2017/2832'>2832: Sulphites; thiosulphates</a>"]
B --> C["<a href='/classifications/hs/v2017/283230'>283230: Thiosulphates</a>"]

    B --> D["<a href='/classifications/hs/v2017/283210'>283210: Sulphites; of sodium</a>"]
B --> E["<a href='/classifications/hs/v2017/283220'>283220: Sulphites; other than of sodium</a>"]

    

    %% Color coordination by level

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    classDef level2 color:#000,fill:#e0a458,stroke:#333,stroke-width:1px
    classDef level3 color:#000,fill:#419d78,stroke:#333,stroke-width:1px
    classDef level4 color:#000,fill:#c04abc,stroke:#333,stroke-width:1px
    classDef level5 color:#000,fill:#f1c40f,stroke:#333,stroke-width:1px
    classDef level6 color:#000,fill:#f1c40f,stroke:#333,stroke-width:1px
    classDef highlight color:#000,fill:#fff,stroke:#000,stroke-width:5px



  %% Apply classes
  class A level2
class B level4
class C level6
class D level6
class E level6

  class C highlight

  %% class A level1
  %% class B,C level2
  %% class D,E,F,G,H,I level2
  %% class J,K,L,M,N,O,P level3
  %% class C highlight