HS code 2921 45 24: Koch’s acid (1-naphthylamine-3,6,8-trisulphonic acid)

HS code 2921 45 24 covers koch’s acid (1-naphthylamine-3,6,8-trisulphonic acid) in chapter 29 (organic chemicals). 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)2921 45 24
DescriptionKoch’s acid (1-naphthylamine-3,6,8-trisulphonic acid)
Chapter29: Organic chemicals
Heading2921: Aromatic monoamines and their derivatives salts thereof
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 275 tonnes in 2025-26 (up 46.8% on 2024-25) under tariff item 29214524, “Kchs acd(1-npthylamn-3,6,8-trislphnc acd)”.
  • India exported 15 tonnes in 2025-26 (down 38.2% on 2024-25) under tariff item 29214524, “Kchs acd(1-npthylamn-3,6,8-trislphnc acd)”.

Chemicals under HS code 2921 45 24

8-Aminonaphthalene-1,3,6-trisulfonic acid

Questions about HS code 2921 45 24

What is the import duty on HS code 2921 45 24 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 koch’s acid (1-naphthylamine-3,6,8-trisulphonic acid) free in India?

DGFT import policy for HS code 2921 45 24 is Free.

Can koch’s acid (1-naphthylamine-3,6,8-trisulphonic acid) be exported from India?

DGFT export policy for HS code 2921 45 24 is Free.

Which chemicals fall under HS code 2921 45 24?

8-Aminonaphthalene-1,3,6-trisulfonic acid.

Other lines under heading 2921

2921 11 10: Dimethyl formide2921 11 90: Methylamine, di- or trimethylamine and their salts2921 12 00: 2-(N, N-Dimethylamino)ethylchloride hydrochloride2921 13 00: 2-(N, N-Diethylamino)ethylchloride hydrochloride2921 14 00: 2-(N, N-Diisopropylamino)ethylchloride hydrochlori2921 19 10: 2-Chloro N, N-Diisopropyl ethylamine2921 19 20: 2-Chloro N, N-Dimethyl ethanamine2921 19 90: Acyclic monoamines and their derivatives; salts th2921 21 00: Ethylenediamine and its salts2921 22 00: Hexamethylenediamine and its salts2921 29 10: Hexamethylene tetramine (hexamine) not put up as f2921 29 20: Trimethylene triniframine2921 29 90: Acyclic polyamines and their derivatives; salts th2921 30 10: Cyclohexylamine2921 30 90: Cyclanic, cyclenic or cycloterpenic mono or polyam2921 41 10: Aniline2921 41 20: Aniline hydrochloride2921 41 90: Aniline and its salts: other2921 42 11: Para chloroaniline2921 42 12: Ortho chloro paranitroaniline

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.