4-Toluidine-3-sulphonic acid

4-Toluidine-3-sulphonic acid, aromatic amine-function compound

CIB&RC CLEARANCE · NDPS CLEARANCE

HSN 2921 43 80 (4-Toluidine-3-sulphonic acid) is subject to registration and import-permit requirements from the Central Insecticides Board and Registration Committee (CIB&RC) under the Insecticides Act, 1968, where the substance falls within the Schedule to that Act, with import restricted to ports specified under Rule 45 of the Insecticides Rules, 1971. Narcotic Drugs and Psychotropic Substances (NDPS) conditions under Chapter VII-A of the NDPS Rules, 1985 and ITC (HS) Chemical Weapons Convention (CWC) schedule restrictions administered by the Directorate General of Foreign Trade (DGFT) apply as additional clearance requirements. Mandatory Chapter 29 qualifiers under CBIC Circular 23/2023-Cus dated 30-09-2023 must be included in the import declaration with effect from 15 October 2023.

What this is

HSN code

2921 43 80

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
Determine whether 4-Toluidine-3-sulphonic acid falls within the Schedule to the Insecticides Act, 1968 for the specific formulation being imported. If scheduled, obtain registration and an import permit from the Secretariat of the Central Insecticides Board and Registration Committee and route the consignment only through ports specified under Rule 45 of the Insecticides Rules, 1971.
Insecticides Act, 1968 · Rule 45 of the Insecticides Rules, 1971 · ITC (HS) policy CCR for CTI 2921 43 80
2
If the substance is imported for medical or scientific purposes under the NDPS regime, obtain an import certificate under Rule 53 of the NDPS Rules, 1985 before filing the bill of entry. Imports not covered by the medical/scientific carve-out are governed by Appendix I to the ITC (HS) Schedule under ITC (HS) policy condition 2 to Chapter 29.
Rule 53 of the NDPS Rules, 1985 · ITC (HS) policy condition 2 to Chapter 29
3
Include mandatory additional qualifiers in the import declaration as stipulated in paragraphs 4.1 and 4.2 of CBIC Circular 23/2023-Cus dated 30-09-2023, applicable to all commodities under Chapter 29 with effect from 15 October 2023. Additionally, confirm whether the import quantity triggers the Public Liability Insurance obligation under S.O. 227(E) dated 24-03-1992 for specified hazardous substances exceeding threshold quantities.
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 filing the bill of entry without first establishing whether the specific formulation is listed in the Schedule to the Insecticides Act, 1968 — an omission that results in consignment detention at the port of import and potential confiscation. The CIB&RC port restriction under Rule 45 of the Insecticides Rules, 1971 is independent of the NDPS and CWC overlays; compliance with one regime does not discharge the others, and all three assessments must be completed before vessel departure.

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Frequently asked

Does HSN 2921 43 80 require BIS certification?

No. No BIS Quality Control Order covers this amine-function compound. Import is governed by the Central Insecticides Board and Registration Committee under the Insecticides Act, 1968, with concurrent NDPS Rules, 1985 conditions and ITC (HS) CWC-schedule restrictions administered by DGFT where applicable.

At which ports may CIB&RC-scheduled insecticides under this CTI be imported?

Import of substances falling within the Schedule to the Insecticides Act, 1968 is restricted to designated ports specified under Rule 45 of the Insecticides Rules, 1971; the current port list should be confirmed with the CIB&RC Secretariat before placing the purchase order.

When does the NDPS import-certificate requirement apply to this tariff line?

The import certificate under Rule 53 of the NDPS Rules, 1985 is required where the substance qualifies as an NDPS substance imported for medical or scientific purposes under Chapter VII-A; imports falling outside that carve-out are governed by Appendix I to the ITC (HS) Schedule under policy condition 2 to Chapter 29.

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