HS code 3812 31 00: Mixtures of oligomers of 2, 2, 4-trimethyl-1, 2- dihydroquinoline (TMQ)

HS code 3812 31 00 covers mixtures of oligomers of 2, 2, 4-trimethyl-1, 2- dihydroquinoline (TMQ) in chapter 38 (miscellaneous chemical products). Total import duty is about 27.73% of the import value; DGFT import policy: Free.

Total import dutyabout 27.73%
Basic customs duty7.5%
IGST18%
Import policyFree
Export policyFree
Anti-dumpingNone found

Updated 2026-11-01 from official lists, including Budget 2026 and later customs notifications.

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Key facts

Tariff item (8-digit HS code)3812 31 00
DescriptionMixtures of oligomers of 2, 2, 4-trimethyl-1, 2- dihydroquinoline (TMQ)
Chapter38: Miscellaneous chemical products
Heading3812
Unitkg.
Basic customs duty (tariff rate)7.5%
Basic customs duty charged7.5%
Social welfare surcharge10% of BCD
IGST18%
Total import dutyabout 27.73% of the import value
DGFT import policyFree
DGFT export policyFree

Import duty (with Budget 2026 changes)

  • About ₹27,730 duty on every ₹1,00,000 of import value (CIF).

DGFT import and export policy

  • Import: Free.
  • Export: Free.

India's imports and exports

  • India imported 5,018 tonnes in 2025-26 (up 20.9% on 2024-25) under tariff item 38123100, “Mixtures of oligomers of 2, 2, 4-trimethyl-1, 2-dihydroquinoline (tmq)”.
  • India exported 6,886 tonnes in 2025-26 (up 9.8% on 2024-25) under tariff item 38123100, “Mixtures of oligomers of 2, 2, 4-trimethyl-1, 2-dihydroquinoline (tmq)”.

Questions about HS code 3812 31 00

What is the import duty on HS code 3812 31 00 in India?

About 27.73% of the import value: basic customs duty 7.5%, social welfare surcharge 10% of BCD and IGST 18%. IGST can usually be claimed back as input tax credit.

Is the import of mixtures of oligomers of 2, 2, 4-trimethyl-1, 2- dihydroquinoline (tmq) free in India?

DGFT import policy for HS code 3812 31 00 is Free.

Can mixtures of oligomers of 2, 2, 4-trimethyl-1, 2- dihydroquinoline (tmq) be exported from India?

DGFT export policy for HS code 3812 31 00 is Free.

Other lines under heading 3812

3812 10 00: Prepared rubber accelerators3812 20 10: Phthalate plasticisers3812 20 90: Other3812 39 10: Anti-oxidants for rubber3812 39 20: Softeners for rubber3812 39 30: Vulcanizing agents for rubber3812 39 90: Other

Sources: Customs Tariff of India (CBIC) · Notification 45/2025-Customs and Budget 2026 amendments · IGST rates, Notification 9/2025-Integrated Tax (Rate) · DGFT ITC(HS) import and export policy · CBIC Customs (ADD) notifications · Export Import Data Bank (DGCI&S). Guidance from official lists, not legal advice; confirm the classification with your customs broker.