HS Code for Rubber stabilizers

HS code 381239 is designated for anti-oxidising preparations and other compound stabilizers specifically formulated for rubber or plastics. These are chemical mixtures used to prevent degradation from heat, light, or oxidation during processing or throughout the product's lifecycle. Classification here is based on the functional application of the chemical preparation. According to the Explanatory Notes to Chapter 38, heading 3812 covers prepared rubber accelerators, compound plasticizers, and anti-oxidising preparations. Subheading 381239 is a residual category for stabilizers that do not consist of mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ), which are specifically carved out into 381231. These stabilizers are essential in the rubber industry to ensure the longevity and durability of vulcanized products. They are typically complex mixtures of various chemical agents designed to inhibit the free radical reactions that lead to polymer chain scission or cross-linking. The classification requires that the product be a "preparation" or a "compound," meaning it must consist of two or more ingredients mixed together. Single, chemically defined elements or compounds are generally excluded from this chapter and are instead classified in Chapter 28 or 29. Therefore, the chemical composition and the intended use as a stabilizer for rubber or plastics are the primary drivers for selecting 381239.

Products Included

• Compound UV stabilizers for rubber
• Anti-oxidant mixtures for vulcanized rubber
• Heat stabilizers for plastic and rubber compounds
• Light stabilizers for synthetic rubber
• Blended chemical preparations to prevent rubber aging

Common Misclassification

Rubber stabilizers are often misclassified under Chapter 29 (Organic Chemicals) if the importer believes the product is a single chemical compound. For example, a pure antioxidant like BHT would fall under 2907, whereas a mixture containing BHT for use in rubber would fall under 381239. Another common error is confusing these with rubber accelerators classified under 381210. Furthermore, mixtures containing TMQ must be classified under 381231, not 381239, due to the specific 2022 HS nomenclature updates.

FAQ

What is the HS code for Rubber stabilizers?

The HS code for compound rubber stabilizers and anti-oxidising preparations is 381239.

Are single chemical antioxidants classified here?

No, single chemically defined antioxidants are typically classified in Chapter 29. HS code 381239 is reserved for mixtures and compound preparations.