TMQ Rubber Antioxidant 2,2,4-Trimethyl-1,2-Dihydroquinoline Oligomers
This is a specific mixture of oligomers based on 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ), used as an anti-oxidizing preparation for rubber products. It protects rubber from oxidative degradation during processing and service life, classified under HTS 3812.31.00.00 due to its exact chemical composition as mixtures of TMQ oligomers for rubber stabilization.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not exclusively TMQ oligomers but mixed with other stabilizers
Blends with additional anti-oxidants fall under other compound stabilizers, not specific TMQ mixtures.
If for mixtures containing listed persistent organic pollutants
Chapter notes restrict 3824 to specific hazardous substances; TMQ does not qualify unless contaminated.
If imported as individual monomers rather than oligomer mixtures
Pure quinoline derivatives are classified by chemical structure in Chapter 29, not as rubber preparations.
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Import Tips & Compliance
• Provide Safety Data Sheets (SDS) and chemical composition certificates confirming TMQ oligomer content to verify classification under 3812.31.00.00
• Check REACH or TSCA compliance for chemical imports; TMQ mixtures may require pre-registration with EPA
• Avoid misclassification as general rubber chemicals (3812.90); specify TMQ content to prevent duty reassessment
Related Products under HTS 3812.31.00.00
TMQ-8 Rubber Aging Preventer Oligomers
TMQ-8 is an industrial mixture of 2,2,4-trimethyl-1,2-dihydroquinoline oligomers applied in automotive hoses and seals for oxidation protection. It fits HTS 3812.31.00.00 exactly as specified for these rubber anti-oxidizing preparations.
Vulkanox HS Rubber Stabilizer TMQ
Vulkanox HS is a commercial-grade mixture of 2,2,4-trimethyl-1,2-dihydroquinoline oligomers designed for tire and rubber compounding. It provides long-term heat and oxidation resistance, directly matching HTS 3812.31.00.00 for TMQ-based anti-oxidants used in rubber production.
RD-TMQ Oligomer Mixture for Conveyor Belts
RD-TMQ is a polymerized oligomer mixture of 2,2,4-trimethyl-1,2-dihydroquinoline for protecting conveyor belt rubber from flex cracking and aging. Classified precisely under 3812.31.00.00 as it consists solely of TMQ oligomers functioning as rubber stabilizers.
Polymerized TMQ Antioxidant for Tires (Grade 224)
Grade 224 polymerized TMQ consists of high-molecular-weight oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline for tire carcass compounds. Its classification under HTS 3812.31.00.00 is based on the statutory definition for these specific rubber stabilizer mixtures.
Sanitized TMQ Rubber Stabilizer for Medical Tubing
This purified TMQ oligomer mixture is used in pharmaceutical-grade rubber tubing to prevent oxidative failure. It qualifies for HTS 3812.31.00.00 as mixtures of 2,2,4-trimethyl-1,2-dihydroquinoline oligomers serving as rubber anti-oxidants.