Diethyl sulphate

Diethyl sulphate, inorganic acid ester of non-metals

CIB&RC CLEARANCE · NDPS CLEARANCE

HSN 2920 29 20 (Diethyl sulphate) is subject to Central Insecticides Board and Registration Committee (CIB&RC) registration and import permit under the Insecticides Act, 1968, where the substance figures in the Schedule to that Act. Narcotic Drugs and Psychotropic Substances (NDPS) import-certificate conditions under Chapter VII-A of the NDPS Rules, 1985 apply concurrently, with the Directorate General of Foreign Trade (DGFT) ITC (HS) policy condition 2 of Chapter 29 governing non-medical imports.

What this is

HSN code

2920 29 20

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
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
Confirm whether diethyl sulphate is listed 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 before shipment, and note that the port of import is restricted under Rule 45 of the Insecticides Rules, 1971.
Insecticides Act, 1968 · Rule 45 of the Insecticides Rules, 1971 · ITC (HS) policy condition 2 of Chapter 29
2
If the consignment 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 outside that 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, 1985 · ITC (HS) policy condition 2 of Chapter 29
3
Ensure the import declaration includes the mandatory additional qualifiers for Chapter 29 commodities as stipulated in paragraphs 4.1 and 4.2 of CBIC Circular 23/2023-Cus dated 30-09-2023, applicable with effect from 15 October 2023. If the imported quantity of a specified hazardous substance exceeds the threshold under S.O. 227(E) dated 24-03-1992, take out a public liability insurance policy under the Public Liability Insurance Act, 1991.
CBIC Circular 23/2023-Cus dated 30-09-2023 · S.O. 227(E) dated 24-03-1992

A word of counsel

The dual-regime trap on this tariff line is the assumption that the CIB&RC pesticide pathway and the NDPS import-certificate pathway are mutually exclusive. A consignment of diethyl sulphate may trigger both if it is classifiable under the Insecticides Act Schedule and the substance is simultaneously listed under the NDPS Rules appendix; missing either clearance results in consignment detention at the restricted port and potential seizure. The Chapter 29 mandatory qualifiers under CBIC Circular 23/2023-Cus are an independent customs-declaration requirement and non-compliance attracts a separate penalty.

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Frequently asked

Does HSN 2920 29 20 require BIS certification?

No, diethyl sulphate 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, with a concurrent NDPS import-certificate requirement under the NDPS Rules, 1985 and DGFT ITC (HS) policy condition 2 of Chapter 29.

Are there port restrictions for importing diethyl sulphate under the Insecticides Act?

Yes. Where the substance figures in the Schedule to the Insecticides Act, 1968, the places at which it may be imported are restricted under Rule 45 of the Insecticides Rules, 1971; the permissible ports must be confirmed with CIB&RC before routing the shipment.

What applies if diethyl sulphate is imported in quantities exceeding the hazardous-substance threshold?

Per S.O. 227(E) dated 24-03-1992 issued by the Ministry of Environment and Forests, the owner must take out a public liability insurance policy under the Public Liability Insurance Act, 1991 for imports of specified hazardous substances exceeding the notified quantities.

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