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HomeHSNChapter 29HSN 2921 42 33

Metanillic acid (meta amino benzene sulphonic acid)

Metanillic acid, aniline derivatives and their salts

CIB&RC CLEARANCE · NDPS CLEARANCE

HSN 2921 42 33 (Metanillic acid) is subject to registration and import permit from the Central Insecticides Board and Registration Committee (CIB&RC) under the Insecticides Act, 1968, where the substance figures in the Schedule to that Act, with import restricted to notified ports under Rule 45 of the Insecticides Rules, 1971. Narcotic Drugs and Psychotropic Substances (NDPS) conditions and Chemical Weapons Convention (CWC) policy restrictions under the ITC (HS) Schedule apply as additional overlays, and mandatory Chapter 29 qualifiers under CBIC Circular 23/2023-Cus are required at the bill-of-entry stage.

What this is
HSN code
2921 42 33
Chapter
29 · Organic chemicals
Primary regulator
CIB&RC · Insecticides Act, 1968 and Insecticides Rules, 1971
Customs documentation
  • Registration certificate from CIB&RC
  • Import permit from CIB&RC
  • Chapter 29 qualifiers from CBIC
Applicable Partner Government Agencies
CIB&RCCIB&RC·Central Insecticides Board and Registration Committee
NDPSNDPS·Narcotics Control Bureau

Procedural directions for customs clearance are issued by: Directorate General of Foreign Trade, Central Board of Indirect Taxes and Customs.

Compliance steps
  1. 1
    Verify whether the specific substance falling under this CTI figures in the Schedule to the Insecticides Act, 1968. If so, obtain registration and an import permit from the Secretariat of the Central Insecticides Board and Registration Committee, and route the consignment only through ports notified under Rule 45 of the Insecticides Rules, 1971.
    Insecticides Act, 1968 · Rule 45 of the Insecticides Rules, 1971
  2. 2
    Where the substance is an NDPS-listed item imported for medical or scientific purposes, obtain an import certificate under Rule 53 of the NDPS Rules, 1985 before filing the bill of entry. Imports outside the medical-and-scientific category are governed by Appendix I to the ITC (HS) Schedule per ITC (HS) policy condition 2 to Chapter 29.
    Chapter VII-A of the NDPS Rules, 1985 · Rule 53 of the NDPS Rules, 1985 · ITC (HS) policy condition 2 to Chapter 29
  3. 3
    Comply with CBIC Circular 23/2023-Cus dated 30-09-2023 by furnishing mandatory additional qualifiers in the import declaration for Chapter 29 commodities as stipulated in Paras 4.1 and 4.2, with effect from 15-10-2023. Where quantities of specified hazardous substances exceed prescribed thresholds, take out an insurance policy under the Public Liability Insurance Act, 1991 as per S.O. 227(E) dated 24-03-1992.
    CBIC Circular 23/2023-Cus dated 30-09-2023 · S.O. 227(E) dated 24-03-1992
A word of counsel

The most common error on this tariff line is assuming the substance is free to import simply because the importer's primary use is industrial and not pesticidal — CIB&RC registration is triggered by the substance's presence in the Schedule to the Insecticides Act, 1968, not by the importer's intended end-use. A consignment arriving at a port not notified under Rule 45 of the Insecticides Rules, 1971 is liable to detention and confiscation regardless of whether CIB&RC registration has been obtained, because port eligibility is a separate and independent condition.

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Frequently asked
Does HSN 2921 42 33 require BIS certification?
No. No BIS Quality Control Order covers aniline derivatives such as metanillic acid. Import is governed by the Central Insecticides Board and Registration Committee under the Insecticides Act, 1968, with NDPS and CWC policy overlays administered under ITC (HS) policy condition 2 to Chapter 29.
Is import of metanillic acid restricted to specific ports?
Yes. Where the substance falls within the Schedule to the Insecticides Act, 1968, import is restricted to places notified under Rule 45 of the Insecticides Rules, 1971; consignments arriving at non-notified ports are liable to detention and confiscation.
When does the CWC restriction apply to substances under this CTI?
Nitrogen mustards falling under Appendix II to Schedule I (Category 1A) of the ITC (HS) policy are Restricted and require permission from the national authority; Category IB substances such as 2-chloro-N,N-di-isopropyl ethylamine are permitted only from State Parties to the Chemical Weapons Convention and are subject to specified conditions.
Last verified against gazette notifications: 2026-05-16. Source: CIB&RC / NDPS / DGFT / CBIC / Indian Customs CUSDATA.
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