Polymerized TMQ Antioxidant for Tires (Grade 224)
Polymerized TMQ antioxidant in Grade 224, composed of high-molecular-weight oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline, used to protect tire carcass rubber from oxidative aging and flex cracking. This product falls under tariff item 3812.31.00 as a mixture of TMQ oligomers serving as an anti-oxidizing preparation for rubber.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product contains additional stabilizers or additives beyond TMQ oligomers
Other anti-oxidizing preparations and compound stabilizers for rubber or plastics not specifically covered by 3812.31.00.
If the product is a single chemically defined TMQ compound rather than a mixture of oligomers
Separate chemically defined heterocyclic compounds are classified in Chapter 29, not Chapter 38.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the product is clearly labeled as a mixture of TMQ oligomers and not a separate chemically defined compound, as the latter may fall under Chapter 29
• Provide a technical data sheet to CBSA confirming the oligomeric nature and intended use as a rubber antioxidant
• Verify if the product qualifies for duty relief under any free trade agreements based on country of origin
Related Products under Tariff item 3812.31.00
RD-TMQ Oligomer Mixture for Conveyor Belts
RD-TMQ oligomer mixture for conveyor belts, consisting of polymerized 2,2,4-trimethyl-1,2-dihydroquinoline oligomers that protect rubber from flex cracking and aging. This product is classified under 3812.31.00 as a mixture of TMQ oligomers used as an anti-oxidizing preparation for rubber.
Sanitized TMQ Rubber Stabilizer for Medical Tubing
Sanitized TMQ rubber stabilizer for medical tubing, a purified mixture of 2,2,4-trimethyl-1,2-dihydroquinoline oligomers that prevents oxidative failure in pharmaceutical-grade rubber. This product falls under 3812.31.00 as a mixture of TMQ oligomers serving as an anti-oxidizing preparation for rubber.
TMQ-8 Rubber Aging Preventer Oligomers
TMQ-8 rubber aging preventer oligomers, an industrial mixture of 2,2,4-trimethyl-1,2-dihydroquinoline oligomers used in automotive hoses and seals for oxidation protection. This product is classified under 3812.31.00 as a mixture of TMQ oligomers used as an anti-oxidizing preparation for rubber.
TMQ Rubber Antioxidant 2,2,4-Trimethyl-1,2-Dihydroquinoline Oligomers
TMQ rubber antioxidant consisting of a specific mixture of oligomers based on 2,2,4-trimethyl-1,2-dihydroquinoline, used to protect rubber from oxidative degradation during processing and service. This product falls under 3812.31.00 as a mixture of TMQ oligomers serving as an anti-oxidizing preparation for rubber.
Vulkanox HS Rubber Stabilizer TMQ
Vulkanox HS rubber stabilizer TMQ, a commercial-grade mixture of 2,2,4-trimethyl-1,2-dihydroquinoline oligomers designed for tire and rubber compounding, providing long-term heat and oxidation resistance. This product is classified under 3812.31.00 as a mixture of TMQ oligomers used as an anti-oxidizing preparation for rubber.