Hydrogen cyanide (hydrocyanic acid)

HS v2017 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 for the production of other chemicals, hydrogen cyanide is an important component in the broader chemical industry, with applications ranging from the manufacturing of plastics to the extraction of precious metals.

Production process

Hydrogen cyanide is typically produced through the reaction of methane and ammonia at 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 liquefied for storage and transportation.

Production inputs

The main inputs required for the production of hydrogen cyanide include methane, ammonia, and specialized catalysts. Additionally, the process requires significant energy inputs in the form of heat and pressure to facilitate the chemical reaction. Machinery such as reactors, distillation columns, and storage tanks are also essential for the efficient production and handling of this hazardous substance.

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. These include 282110 Sodium cyanide, 292690 Nitrile-function compounds, and 284390 Compounds of precious metals, among others. The demand for hydrogen cyanide is driven by its applications in the manufacturing of plastics, pharmaceuticals, and various industrial processes.

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 page shows a legacy version of code 281112 ( HS v2017).

Newer versions
Older versions

Family tree for hydrogen cyanide (hydrocyanic acid)

    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/v2017/2811'>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/v2017/281112'>281112: Hydrogen cyanide (hydrocyanic acid)</a>"]

    B --> D["<a href='/classifications/hs/v2017/281111'>281111: Hydrogen fluoride (hydrofluoric acid)</a>"]
B --> E["<a href='/classifications/hs/v2017/281119'>281119: Inorganic acids; other than hydrogen fluoride</a>"]
B --> F["<a href='/classifications/hs/v2017/281121'>281121: Carbon dioxide</a>"]
B --> G["<a href='/classifications/hs/v2017/281122'>281122: Silicon dioxide</a>"]
B --> H["<a href='/classifications/hs/v2017/281129'>281129: Inorganic oxygen compounds; of non-metals, n.e.c. in item no. 2811.2</a>"]

    

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