2- Ethyl-2-(hydroxymethyl) propane-1,3-diol (trimethylolropane)

Trimethylolpropane, acyclic triol chemical intermediate

CIB&RC CLEARANCE · NDPS CLEARANCE

HSN 2905 41 00 (trimethylolpropane) is subject to Central Insecticides Board and Registration Committee (CIB&RC) registration and import permit requirements under the Insecticides Act, 1968, where the substance figures in the Schedule to that Act. Narcotic Drugs and Psychotropic Substances (NDPS) import-certificate controls under Chapter VII-A of the NDPS Rules, 1985, and mandatory Chapter 29 additional qualifiers under CBIC Circular 23/2023-Cus apply as additional clearance requirements.

What this is

HSN code

2905 41 00

Chapter

29 · Organic chemicals

Primary regulator

CIB&RC · Insecticides Act, 1968; NDPS Rules, 1985

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
Verify whether the specific formulation of trimethylolpropane being imported figures in the Schedule to the Insecticides Act, 1968. If it does, obtain registration and an import permit from the Secretariat of the Central Insecticides Board and Registration Committee before filing the bill of entry, and route the consignment only through ports permitted under Rule 45 of the Insecticides Rules, 1971.
Insecticides Act, 1968 · Rule 45 of the Insecticides Rules, 1971 · ITC (HS) policy condition for Chapter 29
2
If the substance is classified as an NDPS substance, obtain an import certificate under Rule 53 of the NDPS Rules, 1985 for medical or scientific purposes under Chapter VII-A of those Rules. Imports outside that category are governed by Appendix-I to the ITC (HS) Schedule per ITC (HS) policy condition 2 to Chapter 29.
Chapter VII-A and Rule 53 of the NDPS Rules, 1985 · ITC (HS) policy condition 2 to Chapter 29
3
Ensure the import declaration includes the mandatory additional qualifiers for Chapter 29 commodities as stipulated in paras 4.1 and 4.2 of CBIC Circular 23/2023-Cus. Additionally, where import of specified hazardous substances exceeds prescribed quantities, take out a public liability insurance policy under the provisions of the Public Liability Insurance Act, 1991 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 critical error on this tariff line is assuming that because trimethylolpropane is primarily an industrial polyol intermediate, neither the CIB&RC pesticide schedule nor the NDPS overlay applies. Both regimes are triggered by the identity of the specific formulation, not by its principal commercial use — a formulation that figures in the Schedule to the Insecticides Act, 1968 requires CIB&RC registration regardless of the importer's end-use intent, and filing without that registration exposes the consignment to seizure under the Act.

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Frequently asked

Does HSN 2905 41 00 require BIS certification?

No, trimethylolpropane does not fall within any BIS Quality Control Order regime. Import is governed by the Central Insecticides Board and Registration Committee under the Insecticides Act, 1968, with a concurrent NDPS Rules, 1985 overlay where the substance is scheduled, and mandatory Chapter 29 declaration qualifiers under CBIC Circular 23/2023-Cus.

Are all ports open for import of insecticide-scheduled substances under this tariff line?

No. Importation of insecticides falling in the Schedule to the Insecticides Act, 1968 is restricted to places notified under Rule 45 of the Insecticides Rules, 1971; consignments routed through non-notified ports are liable to detention and seizure.

When does the public liability insurance requirement under S.O. 227(E) apply to this HSN?

The requirement applies when the quantity of specified hazardous substances imported exceeds the thresholds prescribed under the Public Liability Insurance Act, 1991, as notified by S.O. 227(E) dated 24-03-1992 by the Ministry of Environment and Forests.

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