HS Code for Plastic stabilizers

Plastic stabilizers, specifically those consisting of mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ), are classified under HS code 3812.31. Chapter 38 covers miscellaneous chemical products. Heading 3812 includes prepared rubber accelerators, compound plasticizers for rubber or plastics, and anti-oxidizing preparations and other compound stabilizers for rubber or plastics. Subheading 3812.31 is a specific provision for TMQ-based stabilizers. These chemicals are essential in the polymer industry to prevent degradation caused by heat, light, or oxidation during processing or throughout the product's lifespan. Because these are "compound" preparations or specific chemical mixtures intended for a functional use in plastic manufacturing, they are classified here rather than as separate chemically defined compounds in Chapter 29. The classification depends heavily on the chemical composition and the intended use. If the stabilizer is a single chemically defined element or compound, it might be classified in Chapter 28 or 29. However, most commercial stabilizers are mixtures or preparations designed for specific industrial performance, which brings them into Chapter 38. This specific subheading for TMQ was created to provide better statistical tracking for this common antioxidant used in both the rubber and plastics industries. These stabilizers are often traded in powder, flake, or liquid form and are added in small percentages to the base resin.

Products Included

• TMQ oligomer mixtures
• Compound anti-oxidants for PVC
• Heat stabilizers for plastic resins
• UV stabilizer preparations for polymers
• Mixed light stabilizers for plastics
• Antiozonant compounds for rubber and plastic

Common Misclassification

Stabilizers are often misclassified under 2933.39 if the importer believes they are pure heterocyclic compounds. However, if they are prepared mixtures, 3812 is correct. They are also sometimes confused with 3901-3914 (Primary plastics), but these codes are for the resins themselves, not the additives. Another potential error is 3824.99 (Other chemical products), but 3812.31 is more specific for stabilizers.

FAQ

What is the HS code for plastic stabilizers?

For compound stabilizers and anti-oxidants like TMQ, the specific HS code is 3812.31.

Are liquid stabilizers included in this code?

Yes, as long as they are compound preparations intended for use as stabilizers in rubber or plastics, the physical form does not change the heading.