Aldehydes; cyclic polymers of aldehydes

HS v2022 Code: 291250

About aldehydes; cyclic polymers of aldehydes

HS code 291250 covers a diverse range of organic compounds known as aldehydes and their cyclic polymers. Aldehydes are a class of chemicals that play a crucial role in various industries, from pharmaceuticals and personal care products to food and beverage manufacturing. These versatile compounds are valued for their unique properties and wide-ranging applications, making them an essential part of the global chemical supply chain.

Production process

The production of aldehydes and their cyclic polymers typically involves a series of chemical reactions. The most common method is the oxidation of alcohols, where the hydroxyl group is converted to an aldehyde group. This process can be carried out using various oxidizing agents, such as chromium-based compounds or metal-catalyzed reactions. Cyclic polymers of aldehydes, on the other hand, are formed through the condensation of aldehyde molecules, often facilitated by the presence of an acid or base catalyst.

Production inputs

The main inputs required for the production of aldehydes and their cyclic polymers include alcohols, oxidizing agents, and catalysts. Depending on the specific application, other raw materials such as solvents, reducing agents, or additional chemical reagents may be necessary. Additionally, specialized equipment like reactors, distillation columns, and purification systems are essential for the efficient and safe production of these compounds.

Production outputs

The outputs of HS code 291250 are a diverse range of aldehydes and their cyclic polymers, which find applications in various industries. These compounds can be used as intermediates in the synthesis of other chemicals, such as 291500 Esters, 292100 Amine-function compounds, and 293000 Organo-inorganic compounds. Aldehydes are also widely used in the production of pharmaceuticals, personal care products, flavors, and fragrances, as well as in the chemical industry for the manufacture of resins, plastics, and other specialty chemicals.

Revisions to 291250

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 291250. The most recent 1 version of this code (291250) is in the HS v2022 system (this version):

This page shows the most recent version of code 291250.

Family tree for aldehydes; cyclic polymers of aldehydes

    graph LR
    A["<a href='/classifications/hs/v2022/29'>29: Organic chemicals</a>"]
A --> B["<a href='/classifications/hs/v2022/2912'>2912: Aldehydes, whether or not with other oxygen function; cyclic polymers of aldehydes; paraformaldehyde</a>"]
B --> C["<a href='/classifications/hs/v2022/291250'>291250: Aldehydes; cyclic polymers of aldehydes</a>"]

    B --> D["<a href='/classifications/hs/v2022/291211'>291211: Aldehydes; acyclic, without other oxygen function, methanal (formaldehyde)</a>"]
B --> E["<a href='/classifications/hs/v2022/291212'>291212: Aldehydes; acyclic, without other oxygen function, ethanal (acetaldehyde)</a>"]
B --> F["<a href='/classifications/hs/v2022/291219'>291219: Aldehydes; acyclic, without other oxygen function, n.e.c. in item no. 2912.1</a>"]
B --> G["<a href='/classifications/hs/v2022/291221'>291221: Aldehydes; cyclic, without other oxygen function, benzaldehyde</a>"]
B --> H["<a href='/classifications/hs/v2022/291229'>291229: Aldehydes; cyclic, without other oxygen function, other than benzaldehyde</a>"]
B --> I["<a href='/classifications/hs/v2022/291241'>291241: Aldehydes; aldehyde-ethers, aldehyde-phenols and aldehydes with other oxygen function, vanillin (4-hydroxy-3-methoxybenzaldehyde)</a>"]
B --> J["<a href='/classifications/hs/v2022/291242'>291242: Aldehydes; aldehyde-ethers, aldehyde-phenols and aldehydes with other oxygen function, ethylvanillin (3-ethoxy-4-hydroxybenzaldehyde)</a>"]
B --> K["<a href='/classifications/hs/v2022/291249'>291249: Aldehyde-alcohols, aldehyde-ethers, aldehyde-phenols and aldehydes with other oxygen function; other than vanillin (4-hydroxy-3-methoxybenzaldehyde) and ethylvanillin (3-ethoxy-4-hydroxybenzaldehyde)</a>"]
B --> L["<a href='/classifications/hs/v2022/291260'>291260: Paraformaldehyde</a>"]

    

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class E level6
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class G level6
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class I level6
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