Other

Other heterocyclic compounds with nitrogen heteroatoms only

CIB&RC CLEARANCE · NDPS CLEARANCE

HSN 2933 59 90 (Other heterocyclic nitrogen compounds) is subject to dual primary-regulator control: the Central Insecticides Board and Registration Committee (CIB&RC) requires registration and an import permit under Rule 45 of the Insecticides Rules, 1971 where the substance figures in the Schedule to the Insecticides Act, 1968, while substances classified as narcotic or psychotropic — such as n-benzylpiperazine — attract import-certificate requirements under the Narcotic Drugs and Psychotropic Substances (NDPS) Rules, 1985. The tariff line is Free under DGFT policy condition No. 08 of Chapter 29 until 30 November 2026, and mandatory Chapter 29 qualifiers under CBIC Circular 23/2023-CUS apply at the bill of entry.

What this is

HSN code

2933 59 90

Chapter

29 · Organic chemicals

Primary regulator

CIB&RC · Insecticides Act, 1968 and Insecticides Rules, 1971 (where scheduled); NDPS Rules, 1985 (where narcotic/psychotropic)

Customs documentation

Registration certificate from CIB&RC
Import permit from CIB&RC
Import certificate from NDPS

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
Determine whether the substance falls within the Schedule to the Insecticides Act, 1968; if so, obtain a registration certificate and import permit from the secretariat of CIB&RC before shipping, and route the consignment only through ports notified under Rule 45 of the Insecticides Rules, 1971. Upload document codes 101dc1 (registration certificate) and 9111dc (import licence) in e-Sanchit before the bill of entry.
Insecticides Act, 1968 · Rule 45 of the Insecticides Rules, 1971 · e-Sanchit document codes 101dc1, 9111dc
2
If the substance is an NDPS-scheduled compound (e.g. n-benzylpiperazine), obtain an import certificate for medical or scientific use under Chapter VII-A of the NDPS Rules, 1985, or confirm compliance with ITC (HS) Schedule Appendix-I and policy condition No. 2 to Chapter 29 for other permitted uses. Upload document codes 0010dc (certificate of analysis), 0030dc (batch release certificate), 0110dc (label) and 9111dc (import licence) in e-Sanchit.
NDPS Rules, 1985 — Chapter VII-A · ITC (HS) Schedule Appendix-I · ITC (HS) policy condition 2 to Chapter 29 · e-Sanchit document codes 0010dc, 0030dc, 0110dc, 9111dc
3
Include mandatory additional qualifiers in the import declaration as stipulated in paragraphs 4.1 and 4.2 of CBIC Circular 23/2023-CUS with effect from 15 October 2023. Confirm that the import of diazinon and fenarimol is absolutely prohibited under S.O. 3951(E) dated 08-08-2018; consignments containing either substance are liable to confiscation.
CBIC Circular 23/2023-CUS dated 30-09-2023 · S.O. 3951(E) dated 08-08-2018 · DGFT Notification 50/2025-26 dated 18-12-2025

A word of counsel

The most common error on this tariff line is importing under the DGFT 'Free' policy status without first screening whether the specific molecule is scheduled under the Insecticides Act, 1968 or listed under the NDPS regime. 'Free' in the ITC (HS) policy refers only to the trade-policy status and does not override CIB&RC registration, the notified-port restriction under Rule 45 of the Insecticides Rules, 1971, or the NDPS import-certificate requirement — each of which is an independent clearance failure that attracts detention, seizure, or criminal liability irrespective of the DGFT policy condition.

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Frequently asked

Does HSN 2933 59 90 require BIS certification?

No, this residual heterocyclic nitrogen-compound tariff line is not covered by any BIS Quality Control Order. Import is governed by the Central Insecticides Board and Registration Committee under the Insecticides Act, 1968 where the substance is scheduled, and by the NDPS Rules, 1985 where the substance is narcotic or psychotropic, with DGFT and CBIC policy overlays.

Are all substances under 2933 59 90 treated the same at the bill of entry, or does the specific molecule determine the clearance path?

The specific molecule determines the clearance path: scheduled insecticides require CIB&RC registration and a port-restricted import permit; NDPS-classified substances require an import certificate under Chapter VII-A of the NDPS Rules, 1985; and the absolute ban on diazinon and fenarimol under S.O. 3951(E) means those substances cannot be imported at all.

Does the Public Liability Insurance Act, 1991 obligation apply to every import under this CTI?

No. The PLI Act, 1991 insurance requirement under S.O. 227(E) dated 24-03-1992 applies only when import of specified hazardous substances exceeds the quantities prescribed by the Ministry of Environment, Forest and Climate Change; quantities below those thresholds do not trigger the obligation.

Last verified against gazette notifications: 2026-05-16. Source: CIB&RC / NDPS / DGFT / CBIC / Indian Customs CUSDATA.