Acids; aromatic polycarboxylic acids; other esters of orthophthalic acids

HS v2022 Code: 291734

About acids; aromatic polycarboxylic acids; other esters of orthophthalic acids

HS code 291734 covers a range of aromatic polycarboxylic acids and their esters, which are essential chemical compounds used in various industries. These substances play a crucial role in the production of plastics, dyes, pharmaceuticals, and other important materials, making them a significant part of the broader chemical industry. Understanding the characteristics and applications of these compounds is vital for businesses involved in the import, export, and trade of these essential chemicals.

Production process

The production of the chemicals covered under HS code 291734 typically involves a multi-step process. The key steps often include the oxidation of aromatic hydrocarbons, such as xylene or naphthalene, to form the desired polycarboxylic acids. These acids are then further processed, often through esterification reactions, to create the various esters of orthophthalic acids. The specific techniques and equipment used may vary depending on the target compound and the scale of production.

Production inputs

The main inputs required for the production of the chemicals under HS code 291734 include aromatic hydrocarbons, such as 290243 xylene and 290215 naphthalene, as well as various alcohols and other reagents needed for the esterification process. Additionally, specialized equipment, such as reactors, distillation columns, and purification systems, are essential for the efficient and high-quality production of these chemicals.

Production outputs

The chemicals covered under HS code 291734 are widely used as intermediates in the production of a variety of other products. The aromatic polycarboxylic acids and their esters find applications in the manufacture of 390130 plastics, 320411 dyes, and 300000 pharmaceutical compounds, among other uses. These chemicals may also be consumed by industries producing 291735 phthalic anhydride and other related 2917 aromatic polycarboxylic acids under different HS codes.

Revisions to 291734

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 291734. The most recent 1 version of this code (291734) is in the HS v2022 system (this version):

This page shows the most recent version of code 291734.

Family tree for acids; aromatic polycarboxylic acids; other esters of orthophthalic acids

    graph LR
    A["<a href='/classifications/hs/v2022/29'>29: Organic chemicals</a>"]
A --> B["<a href='/classifications/hs/v2022/2917'>2917: Acids; polycarboxylic acids, their anhydrides, halides, peroxides and peroxy-acids; their halogenated, sulphonated, nitrated or nitrosated derivatives</a>"]
B --> C["<a href='/classifications/hs/v2022/291734'>291734: Acids; aromatic polycarboxylic acids; other esters of orthophthalic acids</a>"]

    B --> D["<a href='/classifications/hs/v2022/291711'>291711: Acids; acyclic polycarboxylic acids; oxalic acid, its salts and esters</a>"]
B --> E["<a href='/classifications/hs/v2022/291712'>291712: Acids; acyclic polycarboxylic acids; adipic acid, its salts and esters</a>"]
B --> F["<a href='/classifications/hs/v2022/291713'>291713: Acids; acyclic polycarboxylic acids; azelaic acid, sebacic acid, their salts and esters</a>"]
B --> G["<a href='/classifications/hs/v2022/291714'>291714: Acids; acyclic polycarboxylic acids; maleic anhydride</a>"]
B --> H["<a href='/classifications/hs/v2022/291719'>291719: Acids; acyclic polycarboxylic acids; n.e.c. in item no. 2917.1</a>"]
B --> I["<a href='/classifications/hs/v2022/291720'>291720: Acids; cyclanic, cyclenic or cycloterpenic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and derivatives</a>"]
B --> J["<a href='/classifications/hs/v2022/291732'>291732: Acids; aromatic polycarboxylic acids; dioctyl orthophthalates</a>"]
B --> K["<a href='/classifications/hs/v2022/291733'>291733: Acids; aromatic polycarboxylic acids; dinonyl or didecyl orthophthalates</a>"]
B --> L["<a href='/classifications/hs/v2022/291735'>291735: Acids; aromatic polycarboxylic acids; phthalic anhydride</a>"]
B --> M["<a href='/classifications/hs/v2022/291736'>291736: Acids; aromatic polycarboxylic acids; terephthalic acid and its salts</a>"]
B --> N["<a href='/classifications/hs/v2022/291737'>291737: Acids; aromatic polycarboxylic acids; dimethyl terephthalate</a>"]
B --> O["<a href='/classifications/hs/v2022/291739'>291739: Acids; aromatic polycarboxylic acids; n.e.c. in item no. 2917.3</a>"]

    

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