Hydrogen cyanide (hydrocyanic acid)

HS v2022 Code: 281112

About hydrogen cyanide (hydrocyanic acid)

HS code 281112 covers the classification of hydrogen cyanide, also known as hydrocyanic acid. This chemical compound is a highly toxic and flammable substance that plays a crucial role in various industrial processes. As a key raw material, hydrogen cyanide is widely used in the production of a range of other chemicals, making it an essential component in the broader chemical industry.

Production process

Hydrogen cyanide is typically produced through the reaction of methane and ammonia under high temperatures and pressures. This process, known as the Andrussow process, involves the catalytic oxidation of methane and ammonia to form hydrogen cyanide. The resulting gas is then purified and condensed to obtain the final product.

Production inputs

The main inputs required for the production of hydrogen cyanide include methane and ammonia as the primary raw materials, as well as specialized catalysts and equipment capable of withstanding the high temperatures and pressures involved in the Andrussow process. Additionally, the production of hydrogen cyanide requires a reliable supply of energy, such as electricity or natural gas, to power the manufacturing facilities.

Production outputs

The primary output of HS code 281112 is hydrogen cyanide, which is then used as a feedstock for the production of a wide range of other chemicals, including 284390 sodium cyanide, 293621 vitamin B17, and various organic compounds. Hydrogen cyanide is also used in the mining industry, as well as in the manufacture of certain pesticides and pharmaceuticals.

Revisions to 281112

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 281112. The most recent 1 version of this code (281112) is in the HS v2022 system (this version):

This page shows the most recent version of code 281112.

Family tree for hydrogen cyanide (hydrocyanic acid)

    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/v2022/2811'>2811: Inorganic acids and other inorganic oxygen compounds of non-metals; n.e.c. in heading no. 2806 to 2810</a>"]
B --> C["<a href='/classifications/hs/v2022/281112'>281112: Hydrogen cyanide (hydrocyanic acid)</a>"]

    B --> D["<a href='/classifications/hs/v2022/281111'>281111: Hydrogen fluoride (hydrofluoric acid)</a>"]
B --> E["<a href='/classifications/hs/v2022/281119'>281119: Inorganic acids; other than hydrogen fluoride</a>"]
B --> F["<a href='/classifications/hs/v2022/281121'>281121: Carbon dioxide</a>"]
B --> G["<a href='/classifications/hs/v2022/281122'>281122: Silicon dioxide</a>"]
B --> H["<a href='/classifications/hs/v2022/281129'>281129: Inorganic oxygen compounds; of non-metals, n.e.c. in item no. 2811.2</a>"]

    

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    classDef highlight color:#000,fill:#fff,stroke:#000,stroke-width:5px



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class B level4
class C level6
class D level6
class E level6
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class G level6
class H level6

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  %% class C highlight