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HomeHSNChapter 29HSN 2921 51 10

O-phenylenediamine

O-phenylenediamine, an aromatic diamine organic chemical

BIS QCO APPLICABLE · ISI MARK SCHEME · IS 17450 · CIB&RC OVERLAY · NDPS OVERLAY

HSN 2921 51 10 (O-phenylenediamine) is covered by a Bureau of Indian Standards Quality Control Order. Conformity to IS 17450:2020 is mandatory under the ISI Mark Scheme with effect from 28 October 2022, by virtue of the 1,3 Phenylenediamine (Quality Control) Order, 2022. Narcotic Drugs and Psychotropic Substances controls, Chemical Weapons Convention restrictions, insecticide registration requirements, and Public Liability Insurance obligations apply as separate customs-clearance overlays.

What this is
HSN code
2921 51 10
Chapter
29 · Organic chemicals
BIS QCO
Applicable · ISI Mark Scheme · CM/L required
Indian Standard
IS 17450:2020 · effective 28-10-2022
Applicable Partner Government Agencies
BISBIS·Bureau of Indian Standards
CIB&RCCIB&RC·Central Insecticides Board and Registration Committee
NDPSNDPS·Narcotics Control Bureau

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

Compliance steps
  1. 1
    Source only from a Bureau of Indian Standards CM/L-licensed manufacturer holding a current licence against IS 17450:2020. Verify the supplier's CM/L number, licensed product scope, and manufacturing facility on the BIS online register before placing the purchase order.
    1,3 Phenylenediamine (Quality Control) Order, 2022 · S.O. 1960(E) dated 27-04-2022
  2. 2
    Ensure the consignment bears the ISI mark and the supplier's CM/L number as required under Scheme-I of Schedule-II to the BIS (Conformity Assessment) Regulations, 2018. Marking must appear on the product label, not on outer packaging alone.
    Scheme-I of Schedule-II to the BIS (Conformity Assessment) Regulations, 2018 · S.O. 1960(E) dated 27-04-2022
  3. 3
    Determine whether the consignment contains any substance listed under the Narcotic Drugs and Psychotropic Substances Rules, 1985. If so, obtain an import certificate under Rule 53 of the NDPS Rules before shipment; imports outside the medical and scientific purpose category are governed by Appendix I to the ITC (HS) Schedule.
    Chapter VII-A of the NDPS Rules, 1985 · Rule 53 of the NDPS Rules · ITC (HS) policy condition 2 to Chapter 29
  4. 4
    Confirm that the product does not fall within the schedule to the Insecticides Act, 1968. If it does, obtain registration and a permit from the secretariat of the Central Insecticides Board and Registration Committee; note that places of import for scheduled insecticides are restricted under Rule 45 of the Insecticides Rules, 1971.
    Insecticides Act, 1968 · Rule 45 of the Insecticides Rules, 1971
  5. 5
    Include mandatory additional qualifiers in the import declaration as required by CBIC Circular 23/2023-Cus dated 30-09-2023 for Chapter 29 commodities, effective 15 October 2023. Upload all mandatory e-Sanchit documents — certificate of analysis, batch release certificate, consignment label, registration certificate, and import licence — before requesting out-of-charge.
    CBIC Circular 23/2023-CUS dated 30-09-2023 · ITC (HS) policy · S.O. 227(E) dated 24-03-1992
A word of counsel

The single most common error on this tariff line is obtaining BIS CM/L compliance against IS 17450:2020 while overlooking the concurrent multi-agency gatekeeping that customs applies independently. The CCR triggers separate verification queues for NDPS controls, Chemical Weapons Convention restrictions, insecticide-schedule status, and Public Liability Insurance under S.O. 227(E) — any one of these being absent or unresolved holds the consignment regardless of a clean BIS CM/L. Map every applicable overlay before shipment, not at the port.

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Frequently asked
Does HSN 2921 51 10 require BIS certification?
Yes. O-phenylenediamine must conform to IS 17450:2020 under the ISI Mark Scheme with effect from 28 October 2022; import is permitted only from manufacturers holding a current BIS CM/L licence covering the product specification and manufacturing facility.
Are NDPS controls triggered separately from BIS QCO compliance?
Yes. If the substance falls within the NDPS Rules, 1985, an import certificate under Rule 53 is required independently of the BIS CM/L obligation. Medical and scientific purpose imports follow Chapter VII-A of the NDPS Rules; all other NDPS imports are governed by Appendix I to the ITC (HS) Schedule.
What is the Public Liability Insurance obligation under S.O. 227(E)?
On import of specified hazardous substances exceeding prescribed quantities, the owner must take out an insurance policy under the provisions of the Public Liability Insurance Act, 1991, per S.O. 227(E) dated 24-03-1992 issued by the Ministry of Environment and Forests.
Does a single CM/L licence cover all phenylenediamine isomers and related derivatives?
No. The CM/L is scope-specific; IS 17450:2020 covers the specified phenylenediamine standard, and variants or derivatives outside the licensed scope and facility are not covered by the same licence.
Last verified against gazette notifications: 2026-05-18. Source: BIS / CIB&RC / NDPS / DGFT / CBIC / Indian Customs CUSDATA.
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