Cyclic hydrocarbons; styrene

HS v2022 Code: 290250

About cyclic hydrocarbons; styrene

HS code 290250 covers the classification of cyclic hydrocarbons, including styrene. This is a critical industry within the broader chemical manufacturing sector, providing essential raw materials and building blocks for a wide range of downstream products. Styrene, in particular, is a versatile compound with applications in plastics, resins, and various industrial processes, making it a vital component of the global economy.

Production process

The production of cyclic hydrocarbons and styrene typically involves a multi-step process. The primary method is catalytic dehydrogenation of ethylbenzene, where ethylbenzene is heated and passed over a catalyst to remove hydrogen and form styrene. Other techniques, such as steam cracking of naphtha or the oxidation of ethylbenzene, may also be employed depending on the specific requirements and production facilities.

Production inputs

The main inputs required for the production of cyclic hydrocarbons and styrene include ethylbenzene, which is the primary raw material, as well as various catalysts, energy sources (such as natural gas or electricity), and specialized production equipment. The industry also relies on a robust supply chain of supporting industries, including 271000 Manufacture of basic chemicals, fertilizers and nitrogen compounds, plastics and synthetic rubber in primary forms.

Production outputs

The primary output of HS code 290250 is styrene, which is then consumed by a wide range of downstream industries, including 392100 Manufacture of plastic plates, sheets, tubes and profiles and 392200 Manufacture of plastic packing goods. Styrene is also used in the production of polystyrene, acrylonitrile-butadiene-styrene (ABS) resins, and various other polymers and resins that are essential for the manufacturing of a diverse array of consumer and industrial products.

Revisions to 290250

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 290250. The most recent 1 version of this code (290250) is in the HS v2022 system (this version):

This page shows the most recent version of code 290250.

Family tree for cyclic hydrocarbons; styrene

    graph LR
    A["<a href='/classifications/hs/v2022/29'>29: Organic chemicals</a>"]
A --> B["<a href='/classifications/hs/v2022/2902'>2902: Cyclic hydrocarbons</a>"]
B --> C["<a href='/classifications/hs/v2022/290250'>290250: Cyclic hydrocarbons; styrene</a>"]

    B --> D["<a href='/classifications/hs/v2022/290211'>290211: Cyclic hydrocarbons; cyclohexane</a>"]
B --> E["<a href='/classifications/hs/v2022/290219'>290219: Cyclic hydrocarbons; cyclanes, cyclenes and cycloterpenes, excluding cyclohexane</a>"]
B --> F["<a href='/classifications/hs/v2022/290220'>290220: Cyclic hydrocarbons; benzene</a>"]
B --> G["<a href='/classifications/hs/v2022/290230'>290230: Cyclic hydrocarbons; toluene</a>"]
B --> H["<a href='/classifications/hs/v2022/290241'>290241: Cyclic hydrocarbons; o-xylene</a>"]
B --> I["<a href='/classifications/hs/v2022/290242'>290242: Cyclic hydrocarbons; m-xylene</a>"]
B --> J["<a href='/classifications/hs/v2022/290243'>290243: Cyclic hydrocarbons; p-xylene</a>"]
B --> K["<a href='/classifications/hs/v2022/290244'>290244: Cyclic hydrocarbons; mixed xylene isomers</a>"]
B --> L["<a href='/classifications/hs/v2022/290260'>290260: Cyclic hydrocarbons; ethylbenzene</a>"]
B --> M["<a href='/classifications/hs/v2022/290270'>290270: Cyclic hydrocarbons; cumene</a>"]
B --> N["<a href='/classifications/hs/v2022/290290'>290290: Cyclic hydrocarbons; n.e.c. in heading no. 2902</a>"]

    

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