Polyphenols; hydroquinone (quinol) and its salts

HS v2017 Code: 290722

About polyphenols; hydroquinone (quinol) and its salts

HS code 290722 covers polyphenols, hydroquinone (quinol), and their salts. These organic compounds are widely used in the chemical industry, with applications ranging from pharmaceuticals and cosmetics to photography and dye production. As a key component in various industrial processes, the 290722 industry plays a vital role in the broader chemical and manufacturing sectors, contributing to the global economy.

Production process

The production of polyphenols, hydroquinone, and their salts typically involves a multi-step chemical synthesis process. This may include oxidation, reduction, and purification techniques to isolate the desired compounds from raw materials. Manufacturers often utilize specialized equipment, such as reactors, distillation columns, and crystallization units, to ensure efficient and high-quality production.

Production inputs

The main inputs required for the 290722 industry include aromatic compounds, such as benzene and phenol, as well as various reagents and catalysts necessary for the chemical synthesis process. Additionally, manufacturers may require specialized machinery, including reactors, distillation equipment, and purification systems, to facilitate the production of these organic compounds.

Production outputs

The outputs of the 290722 industry are primarily polyphenols, hydroquinone, and their salts, which are then used as intermediates or raw materials in a wide range of downstream industries. These include the 300000 Pharmaceutical industry, 330000 Cosmetics industry, 370000 Photography industry, and 320000 Dye and pigment manufacturing.

Revisions to 290722

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 290722. The most recent 1 version of this code (290722) is in the HS v2022 system:

This page shows a legacy version of code 290722 ( HS v2017).

Newer versions

Family tree for polyphenols; hydroquinone (quinol) and its salts

    graph LR
    A["<a href='/classifications/hs/v2017/29'>29: Organic chemicals</a>"]
A --> B["<a href='/classifications/hs/v2017/2907'>2907: Phenols; monophenols, polyphenols, and phenol-alcohols</a>"]
B --> C["<a href='/classifications/hs/v2017/290722'>290722: Polyphenols; hydroquinone (quinol) and its salts</a>"]

    B --> D["<a href='/classifications/hs/v2017/290711'>290711: Monophenols; phenol (hydroxybenzene) and its salts</a>"]
B --> E["<a href='/classifications/hs/v2017/290712'>290712: Monophenols; cresols and their salts</a>"]
B --> F["<a href='/classifications/hs/v2017/290713'>290713: Monophenols; octylphenol, nonylphenol and their isomers, salts thereof</a>"]
B --> G["<a href='/classifications/hs/v2017/290715'>290715: Monophenols; naphthols and their salts</a>"]
B --> H["<a href='/classifications/hs/v2017/290719'>290719: Monophenols; n.e.c. in item no. 2907.1</a>"]
B --> I["<a href='/classifications/hs/v2017/290721'>290721: Polyphenols; resorcinol and its salts</a>"]
B --> J["<a href='/classifications/hs/v2017/290723'>290723: Polyphenols; 4,4'-isopropylidenediphenol (bisphenol A, diphenylolpropane) and its salts</a>"]
B --> K["<a href='/classifications/hs/v2017/290729'>290729: Phenol-alcohols and polyphenols n.e.c. in item number 2907.2</a>"]

    

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