Acids; aromatic polycarboxylic acids; dimethyl terephthalate

HS v2022 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 building blocks in the production of various industrial and consumer products. These chemicals play a crucial role in the manufacturing of plastics, textiles, and other materials that are integral to modern life. As a key component of the broader chemical industry, the products under this HS code contribute significantly to global trade and economic development.

Production process

The production of the chemicals covered by HS code 291737 typically involves a multi-step process. The starting point is the oxidation of p-xylene, an aromatic hydrocarbon, to produce terephthalic acid. This acid is then esterified with methanol to yield dimethyl terephthalate, the primary output under this code. 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 robust supply chain of raw materials, energy sources, and transportation infrastructure to support its operations.

Production outputs

The primary output of HS code 291737 is dimethyl terephthalate, which is a key intermediate in the production of 392010 (polyethylene terephthalate (PET)) and other polyester materials. These polyester products are widely used in the manufacture of 550320 synthetic filament textiles, 392330 plastic bottles, and a variety of other consumer and industrial applications. The other aromatic polycarboxylic acids covered by this code may also be used as inputs for the production of various plastics, resins, and other chemical derivatives.

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 version):

This page shows the most recent version of code 291737.

Family tree for acids; aromatic polycarboxylic acids; dimethyl terephthalate

    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/v2022/291737'>291737: Acids; aromatic polycarboxylic acids; dimethyl terephthalate</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/v2022/291734'>291734: Acids; aromatic polycarboxylic acids; other esters of orthophthalic acids</a>"]
B --> M["<a href='/classifications/hs/v2022/291735'>291735: Acids; aromatic polycarboxylic acids; phthalic anhydride</a>"]
B --> N["<a href='/classifications/hs/v2022/291736'>291736: Acids; aromatic polycarboxylic acids; terephthalic acid and its salts</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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class I level6
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