Cellulose nitrates (including collodions); in primary forms

HS v2017 Code: 391220

About cellulose nitrates (including collodions); in primary forms

HS code 391220 covers the classification of cellulose nitrates, including collodions, in their primary forms. Cellulose nitrates are a type of synthetic polymer derived from cellulose, a natural polymer found in plant cell walls. These materials have a wide range of industrial applications, from coatings and lacquers to explosives and propellants, making them an important component of the broader chemical industry.

Production process

The production of cellulose nitrates typically involves the nitration of cellulose, a process where cellulose is treated with a mixture of nitric and sulfuric acids. This reaction converts the hydroxyl groups in the cellulose structure into nitrate ester groups, creating the cellulose nitrate compound. The resulting material is then purified, dried, and processed into its primary forms, such as flakes, powders, or solutions.

Production inputs

The main inputs required for the production of cellulose nitrates include cellulose, nitric acid, and sulfuric acid. Specialized production equipment, such as reactors, filtration systems, and drying units, are also necessary. Additionally, the industry may rely on various solvents, stabilizers, and other additives to achieve the desired properties and characteristics of the final product.

Production outputs

Cellulose nitrates produced under HS code 391220 have a wide range of applications, including the manufacture of 391231 Cellulose acetates, 391239 Cellulose ethers, and 391290 Other cellulose derivatives. These materials are commonly used in coatings, lacquers, paints, and adhesives, as well as in the production of explosives, propellants, and other specialized industrial products.

Revisions to 391220

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 391220. The most recent 1 version of this code (391220) is in the HS v2022 system:

This page shows a legacy version of code 391220 ( HS v2017).

Family tree for cellulose nitrates (including collodions); in primary forms

    graph LR
    A["<a href='/classifications/hs/v2017/39'>39: Plastics and articles thereof</a>"]
A --> B["<a href='/classifications/hs/v2017/3912'>3912: Cellulose and its chemical derivatives, n.e.c. or included, in primary forms</a>"]
B --> C["<a href='/classifications/hs/v2017/391220'>391220: Cellulose nitrates (including collodions); in primary forms</a>"]

    B --> D["<a href='/classifications/hs/v2017/391211'>391211: Cellulose acetates; non-plasticised, in primary forms</a>"]
B --> E["<a href='/classifications/hs/v2017/391212'>391212: Cellulose acetates; plasticised, in primary forms</a>"]
B --> F["<a href='/classifications/hs/v2017/391231'>391231: Cellulose ethers; carboxymethylcellulose and its salts, in primary forms</a>"]
B --> G["<a href='/classifications/hs/v2017/391239'>391239: Cellulose ethers; (other than carboxymethylcellulose and its salts), in primary forms</a>"]
B --> H["<a href='/classifications/hs/v2017/391290'>391290: Cellulose and its chemical derivatives; n.e.c. in item no. 3912, in primary forms</a>"]

    

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