Salts; sodium dichromate

HS v2022 Code: 284130

About salts; sodium dichromate

HS code 284130 covers the classification of salts, including sodium dichromate. This inorganic chemical compound is an important industrial chemical with a wide range of applications. It is widely used in various industries such as metallurgy, leather tanning, wood preservation, and the production of other chemicals. The global sodium dichromate market is expected to grow steadily in the coming years, driven by increasing demand from end-use industries.

Production process

Sodium dichromate is typically produced through the reaction of sodium chromate with sulfuric acid. The main production steps involve the oxidation of chromium ore, followed by the reaction with sodium hydroxide to form sodium chromate. This is then treated with sulfuric acid to precipitate sodium dichromate. The final product is then dried and packaged for distribution.

Production inputs

The key inputs for the production of sodium dichromate include chromium ore, sodium hydroxide, and sulfuric acid. Additionally, the process requires specialized equipment such as reactors, filters, and drying units. Energy, in the form of heat and electricity, is also a significant input for the various stages of production.

Production outputs

The primary output of HS code 284130 is sodium dichromate, which is used as a raw material in the production of other chromium compounds, such as 284129 Chromates and dichromates, 284190 Salts of oxometallic or peroxometallic acids, and 291819 Carboxylic acids with additional oxygen function. Sodium dichromate is also used directly in various applications, including metal finishing, wood preservation, and the production of pigments and dyes.

Revisions to 284130

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 284130. The most recent 1 version of this code (284130) is in the HS v2022 system (this version):

This page shows the most recent version of code 284130.

Older versions

Family tree for salts; sodium dichromate

    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/v2022/2841'>2841: Salts of oxometallic or peroxometallic acids</a>"]
B --> C["<a href='/classifications/hs/v2022/284130'>284130: Salts; sodium dichromate</a>"]

    B --> D["<a href='/classifications/hs/v2022/284150'>284150: Salts; chromates, dichromates, peroxochromates; n.e.c. in heading no. 2841</a>"]
B --> E["<a href='/classifications/hs/v2022/284161'>284161: Salts; of oxometallic or peroxometallic acids, manganites, manganates and permanganates, potassium permanganate</a>"]
B --> F["<a href='/classifications/hs/v2022/284169'>284169: Salts; of oxometallic or peroxometallic acids, manganites, manganates and permanganates, other than potassium permanganate</a>"]
B --> G["<a href='/classifications/hs/v2022/284170'>284170: Salts; molybdates</a>"]
B --> H["<a href='/classifications/hs/v2022/284180'>284180: Salts; tungstates (wolframates)</a>"]
B --> I["<a href='/classifications/hs/v2022/284190'>284190: Salts of oxometallic or peroxometallic acids; n.e.c. in heading no. 2841</a>"]

    

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