HS Code for IR rubber

Isoprene rubber (IR) is classified under HS code 4002.60. This code specifically covers synthetic polyisoprene, which is a polymer produced through the polymerization of isoprene monomers in an industrial setting. Although IR is chemically similar to natural rubber (cis-1,4-polyisoprene), the Harmonized System distinguishes between products derived from biological sources and those produced synthetically. Heading 4002 is the designated category for synthetic rubber. The classification 4002.60 applies to IR in primary forms, such as blocks, lumps, or bales, as well as in unvulcanized plates, sheets, or strips. This classification is critical for trade monitoring, as IR is often used as a high-purity substitute for natural rubber in medical and high-performance industrial applications where consistency and lack of impurities are paramount.

Products Included

• Synthetic polyisoprene (IR) in bales
• Unvulcanized IR sheets for medical device components
• IR rubber in primary forms for adhesive formulations
• High-cis isoprene rubber blocks
• Liquid isoprene rubber (if meeting Chapter 40 notes)

Common Misclassification

The most frequent misclassification for IR rubber is HS code 4001.22 (technically specified natural rubber) or 4001.10 (natural rubber latex). Because the chemical structures are nearly identical, laboratory testing may be required to confirm the synthetic origin. Another confusion arises with 4002.19, which covers other synthetic rubbers like SBR. It is vital to specify "Isoprene Rubber" on shipping documentation to ensure the 4002.60 code is applied correctly.

FAQ

What is the HS code for IR rubber?

The HS code for synthetic isoprene rubber (IR) in primary forms or sheets is 4002.60.

Is IR rubber classified the same as natural rubber?

No, natural rubber is classified under heading 4001, while synthetic isoprene rubber is classified under heading 4002.60, despite their chemical similarities.