Acids; aromatic polycarboxylic acids; dimethyl terephthalate

HS v2017 Code: 291737

About acids; aromatic polycarboxylic acids; dimethyl terephthalate

HS code 291737 covers a group of aromatic polycarboxylic acids, including dimethyl terephthalate, which are essential chemical compounds used in a wide range of industries. These acids are known for their unique properties, such as high thermal stability and chemical resistance, making them valuable raw materials for the production of various consumer and industrial products. The global demand for these chemicals continues to grow, driven by their applications in the manufacturing of plastics, textiles, and other materials that are integral to modern life.

Production process

The production of the chemicals under HS code 291737 typically involves a multi-step process. The first step is the oxidation of p-xylene, an aromatic hydrocarbon, to produce terephthalic acid. This acid is then esterified with methanol to form dimethyl terephthalate, the primary output of this industry. Other aromatic polycarboxylic acids may be produced through similar oxidation and esterification processes, using different starting materials.

Production inputs

The main inputs required for the production of the chemicals under HS code 291737 include p-xylene, methanol, and various catalysts and solvents. Specialized equipment, such as reactors, distillation columns, and purification systems, are also essential for the manufacturing process. Additionally, the industry relies on a reliable supply of energy, typically in the form of steam or electricity, to power the production facilities.

Production outputs

The primary output of the industry covered by HS code 291737 is dimethyl terephthalate, which is a key raw material for the production of 392010 (polyethylene terephthalate (PET)) and other polyester-based materials. These materials are widely used in the manufacture of 550320 synthetic filament tow, 392020 plastic sheets, film, foil, and strip, and 392330 plastic bottles, flasks, and similar articles. The aromatic polycarboxylic acids produced under this code may also find applications in the pharmaceutical, agrochemical, and other specialty chemical industries.

Revisions to 291737

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 291737. The most recent 1 version of this code (291737) is in the HS v2022 system:

This page shows a legacy version of code 291737 ( HS v2017).

Older versions

Family tree for acids; aromatic polycarboxylic acids; dimethyl terephthalate

    graph LR
    A["<a href='/classifications/hs/v2017/29'>29: Organic chemicals</a>"]
A --> B["<a href='/classifications/hs/v2017/2917'>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/v2017/291737'>291737: Acids; aromatic polycarboxylic acids; dimethyl terephthalate</a>"]

    B --> D["<a href='/classifications/hs/v2017/291711'>291711: Acids; acyclic polycarboxylic acids; oxalic acid, its salts and esters</a>"]
B --> E["<a href='/classifications/hs/v2017/291712'>291712: Acids; acyclic polycarboxylic acids; adipic acid, its salts and esters</a>"]
B --> F["<a href='/classifications/hs/v2017/291713'>291713: Acids; acyclic polycarboxylic acids; azelaic acid, sebacic acid, their salts and esters</a>"]
B --> G["<a href='/classifications/hs/v2017/291714'>291714: Acids; acyclic polycarboxylic acids; maleic anhydride</a>"]
B --> H["<a href='/classifications/hs/v2017/291719'>291719: Acids; acyclic polycarboxylic acids; n.e.c. in item no. 2917.1</a>"]
B --> I["<a href='/classifications/hs/v2017/291720'>291720: Acids; cyclanic, cyclenic or cycloterpenic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and derivatives</a>"]
B --> J["<a href='/classifications/hs/v2017/291732'>291732: Acids; aromatic polycarboxylic acids; dioctyl orthophthalates</a>"]
B --> K["<a href='/classifications/hs/v2017/291733'>291733: Acids; aromatic polycarboxylic acids; dinonyl or didecyl orthophthalates</a>"]
B --> L["<a href='/classifications/hs/v2017/291734'>291734: Acids; aromatic polycarboxylic acids; other esters of orthophthalic acids</a>"]
B --> M["<a href='/classifications/hs/v2017/291735'>291735: Acids; aromatic polycarboxylic acids; phthalic anhydride</a>"]
B --> N["<a href='/classifications/hs/v2017/291736'>291736: Acids; aromatic polycarboxylic acids; terephthalic acid and its salts</a>"]
B --> O["<a href='/classifications/hs/v2017/291739'>291739: Acids; aromatic polycarboxylic acids; n.e.c. in item no. 2917.3</a>"]

    

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