Aldehydes; cyclic polymers of aldehydes

HS v2017 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 range of applications, making them an essential part of the global chemical industry.

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 (-OH) is converted to an aldehyde group (-CHO). This process can be carried out using various oxidizing agents, such as chromium-based compounds or metal catalysts. For the production of cyclic polymers, the aldehydes may undergo further condensation reactions, forming larger molecular structures.

Production inputs

The main inputs required for the production of aldehydes and their cyclic polymers include alcohols, oxidizing agents, and various catalysts. Depending on the specific application, other raw materials such as solvents, reducing agents, or additional reagents may be necessary. The production process also requires specialized equipment, such as reactors, distillation columns, and purification systems, to ensure the quality and purity of the final products.

Production outputs

The outputs of HS code 291250 include a wide range of aldehydes and their cyclic polymers, which find applications in numerous industries. These compounds can be used as intermediates in the production of 291500 Esters, 291700 Ethers, and 291800 Ketones, as well as in the synthesis of various 293000 Heterocyclic compounds. Aldehydes are also used in the formulation of personal care products, flavors and fragrances, and pharmaceutical drugs.

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 page shows a legacy version of code 291250 ( HS v2017).

Newer versions

Family tree for aldehydes; cyclic polymers of aldehydes

    graph LR
    A["<a href='/classifications/hs/v2017/29'>29: Organic chemicals</a>"]
A --> B["<a href='/classifications/hs/v2017/2912'>2912: Aldehydes, whether or not with other oxygen function; cyclic polymers of aldehydes; paraformaldehyde</a>"]
B --> C["<a href='/classifications/hs/v2017/291250'>291250: Aldehydes; cyclic polymers of aldehydes</a>"]

    B --> D["<a href='/classifications/hs/v2017/291211'>291211: Aldehydes; acyclic, without other oxygen function, methanal (formaldehyde)</a>"]
B --> E["<a href='/classifications/hs/v2017/291212'>291212: Aldehydes; acyclic, without other oxygen function, ethanal (acetaldehyde)</a>"]
B --> F["<a href='/classifications/hs/v2017/291219'>291219: Aldehydes; acyclic, without other oxygen function, n.e.c. in item no. 2912.1</a>"]
B --> G["<a href='/classifications/hs/v2017/291221'>291221: Aldehydes; cyclic, without other oxygen function, benzaldehyde</a>"]
B --> H["<a href='/classifications/hs/v2017/291229'>291229: Aldehydes; cyclic, without other oxygen function, other than benzaldehyde</a>"]
B --> I["<a href='/classifications/hs/v2017/291241'>291241: Aldehydes; aldehyde-ethers, aldehyde-phenols and aldehydes with other oxygen function, vanillin (4-hydroxy-3-methoxybenzaldehyde)</a>"]
B --> J["<a href='/classifications/hs/v2017/291242'>291242: Aldehydes; aldehyde-ethers, aldehyde-phenols and aldehydes with other oxygen function, ethylvanillin (3-ethoxy-4-hydroxybenzaldehyde)</a>"]
B --> K["<a href='/classifications/hs/v2017/291249'>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/v2017/291260'>291260: Paraformaldehyde</a>"]

    

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



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class E level6
class F level6
class G level6
class H level6
class I level6
class J level6
class K level6
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  %% class A level1
  %% class B,C level2
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