HS Code for Vinyl polymer

HS code 3905.99 is used for vinyl polymers in primary forms that are not copolymers and are not specifically named in the preceding subheadings of heading 3905. This heading includes polymers of vinyl acetate, other vinyl esters, and other vinyl polymers. While 3905.11 covers polyvinyl acetate and 3905.30 covers polyvinyl alcohol, 3905.99 serves as the residual category for homopolymers such as polyvinyl ethers or polyvinyl ketones. Classification here requires that the substance be in a primary form (liquids, pastes, blocks, or powders) and that it does not meet the criteria for copolymers defined in the Chapter 39 notes. The chemical identity of the polymer is the deciding factor; if the polymer is a vinyl type but does not fit into the acetate, alcohol, or copolymer subheadings, it falls into this "other" category. These polymers are often used in specialized industrial applications, including the production of medical devices, specialized coatings, and chemical intermediates.

Products Included

• Polyvinyl ethers
• Polyvinyl ketones
• Polyvinyl homopolymers (non-acetate, non-alcohol)
• Vinyl polymer resins in powder form
• Polyvinyl carbazole

Common Misclassification

The most frequent error is classifying these substances under 3905.91, which is strictly for copolymers. Another common mistake is using 3904.90 for other halogenated polymers, but 3905.99 is specific to non-halogenated vinyl polymers. Importers must also ensure the product is not an acrylic polymer, which would fall under heading 3906. Misidentifying a homopolymer as a copolymer is the primary cause of duty errors in this category.

FAQ

What is the HS code for Vinyl polymer?

The HS code for other vinyl polymers in primary forms (not copolymers) is 3905.99.

What defines a primary form for this classification?

Primary forms are defined in Chapter 39 as liquids, pastes, dispersions, emulsions, solutions, blocks of irregular shape, lumps, powders, granules, flakes, and similar bulk forms.