Chromium trioxide

HS v2022 Code: 281910

About chromium trioxide

HS code 281910 covers chromium trioxide, a critical inorganic chemical compound with a wide range of industrial applications. As a key input for various manufacturing processes, chromium trioxide plays a vital role in the broader chemical and metal processing industries. Its importance extends across sectors such as electroplating, leather tanning, and pigment production, making it an essential component of the global supply chain.

Production process

Chromium trioxide is typically produced through the oxidation of chromium metal or chromium compounds. The most common production method involves the reaction of chromium ore with sodium carbonate and oxygen at high temperatures, followed by the extraction and purification of the chromium trioxide. This process ensures the consistent quality and purity of the final product, which is crucial for its diverse industrial applications.

Production inputs

The primary inputs for the production of chromium trioxide include chromium ore, sodium carbonate, and energy sources such as electricity or natural gas. Specialized equipment, such as furnaces, reactors, and purification systems, are also essential for the manufacturing process. Additionally, the industry relies on a skilled workforce with expertise in chemical processing and quality control.

Production outputs

Chromium trioxide is a versatile compound with numerous downstream applications. It is widely used in 282490 chromium compounds, 284150 inorganic acids, and 284130 metal oxides, serving as a key input for industries like electroplating, leather tanning, and pigment production. The compound's unique properties make it indispensable in various manufacturing processes, contributing to its importance in the global economy.

Revisions to 281910

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 281910. The most recent 1 version of this code (281910) is in the HS v2022 system (this version):

This page shows the most recent version of code 281910.

Older versions

Family tree for chromium trioxide

    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/v2022/2819'>2819: Chromium oxides and hydroxides</a>"]
B --> C["<a href='/classifications/hs/v2022/281910'>281910: Chromium trioxide</a>"]

    B --> D["<a href='/classifications/hs/v2022/281990'>281990: Chromium oxides and hydroxides; excluding chromium trioxide</a>"]

    

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    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



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class C level6
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  %% class A level1
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