Polyphenols; resorcinol and its salts

HS v2022 Code: 290721

About polyphenols; resorcinol and its salts

HS code 290721 covers polyphenols, resorcinol, and its salts. These organic compounds are widely used in the chemical industry, with applications ranging from pharmaceuticals and personal care products to industrial coatings and adhesives. As an important building block for various chemical processes, the 290721 industry plays a crucial role in supporting the broader manufacturing and consumer goods sectors.

Production process

The production of polyphenols, resorcinol, and its salts typically involves chemical synthesis processes. This may include the reaction of phenol with various reagents, such as sulfuric acid or carbon dioxide, to produce the desired polyphenol compounds. Resorcinol is often manufactured through the hydroxylation of benzene, followed by purification and crystallization steps. The resulting products are then processed into various salts and derivatives to meet the specific requirements of different applications.

Production inputs

The main inputs for the 290721 industry include raw materials such as phenol, benzene, and various chemical reagents. Specialized production equipment, such as reactors, distillation columns, and crystallization units, are also essential for the manufacturing process. Additionally, the industry relies on a skilled workforce with expertise in organic chemistry and chemical engineering to ensure efficient and safe production.

Production outputs

The outputs of the 290721 industry include a range of polyphenol compounds, resorcinol, and its salts. These products are widely used as intermediates in the production of 290729 other phenols, 291500 esters, 293700 heterocyclic compounds, and 294000 antibiotics, among other applications. The 290721 industry supports the growth and development of various downstream industries, contributing to the overall chemical and manufacturing sectors.

Revisions to 290721

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 290721. The most recent 1 version of this code (290721) is in the HS v2022 system (this version):

This page shows the most recent version of code 290721.

Family tree for polyphenols; resorcinol and its salts

    graph LR
    A["<a href='/classifications/hs/v2022/29'>29: Organic chemicals</a>"]
A --> B["<a href='/classifications/hs/v2022/2907'>2907: Phenols; monophenols, polyphenols, and phenol-alcohols</a>"]
B --> C["<a href='/classifications/hs/v2022/290721'>290721: Polyphenols; resorcinol and its salts</a>"]

    B --> D["<a href='/classifications/hs/v2022/290711'>290711: Monophenols; phenol (hydroxybenzene) and its salts</a>"]
B --> E["<a href='/classifications/hs/v2022/290712'>290712: Monophenols; cresols and their salts</a>"]
B --> F["<a href='/classifications/hs/v2022/290713'>290713: Monophenols; octylphenol, nonylphenol and their isomers, salts thereof</a>"]
B --> G["<a href='/classifications/hs/v2022/290715'>290715: Monophenols; naphthols and their salts</a>"]
B --> H["<a href='/classifications/hs/v2022/290719'>290719: Monophenols; n.e.c. in item no. 2907.1</a>"]
B --> I["<a href='/classifications/hs/v2022/290722'>290722: Polyphenols; hydroquinone (quinol) and its salts</a>"]
B --> J["<a href='/classifications/hs/v2022/290723'>290723: Polyphenols; 4,4'-isopropylidenediphenol (bisphenol A, diphenylolpropane) and its salts</a>"]
B --> K["<a href='/classifications/hs/v2022/290729'>290729: Phenol-alcohols and polyphenols n.e.c. in item number 2907.2</a>"]

    

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class I level6
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