Triethyl phosphite

Triethyl phosphite, phosphite ester organic chemical

CIB&RC CLEARANCE · NDPS CLEARANCE

HSN 2920 24 00 (Triethyl phosphite) is a Category 1C chemical under the Chemical Weapons Convention (CWC) Act and Rules, requiring post-import notification to the National Authority and DGFT within 30 days of each consignment under ITC (HS) policy condition 3 of Chapter 29. The Central Insecticides Board and Registration Committee (CIB&RC) registration and import permit apply where the substance falls within the Schedule to the Insecticides Act, 1968, and Narcotic Drugs and Psychotropic Substances (NDPS) Rules, 1985 conditions govern any NDPS-schedule overlap. Mandatory additional qualifiers under CBIC Circular 23/2023-Cus apply at the bill-of-entry stage.

What this is

HSN code

2920 24 00

Chapter

29 · Organic chemicals

Primary regulator

CIB&RC · Insecticides Act, 1968 and Insecticides Rules, 1971 (where scheduled); CWC Act and Rules (Category 1C notification)

Customs documentation

Registration and import permit from CIB&RC
Chapter 29 qualifiers from CBIC
CWC notification acknowledgement from DGFT

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
Where triethyl phosphite is listed in the Schedule to the Insecticides Act, 1968, obtain registration and an import permit from the Central Insecticides Board and Registration Committee before shipment. Import is restricted to the places specified under Rule 45 of the Insecticides Rules, 1971; arrival at any other port or point of entry renders the consignment liable to detention and seizure.
Insecticides Act, 1968 · Rule 45 of the Insecticides Rules, 1971 · ITC (HS) policy condition, Chapter 29
2
File mandatory additional qualifiers in the import declaration at the bill-of-entry stage as stipulated in paragraphs 4.1 and 4.2 of CBIC Circular 23/2023-Cus for all commodities under Chapters 28, 29, 32, 39 and CTH 3808, with effect from 15 October 2023. Declarations without the required qualifiers are liable to assessment hold and demurrage.
CBIC Circular 23/2023-Cus dated 30-09-2023
3
Within 30 days of each import, notify consignment details to the National Authority (CWC), Cabinet Secretariat — Ministry of External Affairs (D&ISA), the Department of Chemicals and Petrochemicals, and DGFT, and submit a copy of the bill of entry to DGFT, as required for a Category 1C chemical under Appendix II of the ITC (HS) import policy and policy condition 3 of Chapter 29. If the substance is also scheduled under the NDPS Rules, 1985, an import certificate under Rule 53 of the NDPS Rules, 1985 is required before import.
CWC Act and Rules · ITC (HS) policy condition 3 of Chapter 29 · Rule 53 of NDPS Rules, 1985 · ITC (HS) policy condition 2 of Chapter 29

A word of counsel

The most common error on this tariff line is treating the CWC post-import notification as a formality and missing the 30-day window — each consignment triggers a fresh notification obligation to four separate authorities, and a late or absent notification constitutes a standalone breach of CWC Act and Rules independent of customs clearance. Additionally, importers frequently overlook the PLI Act, 1991 insurance obligation: where import of specified hazardous substances exceeds the quantities prescribed under S.O. 227(E) dated 24-03-1992, the owner must hold a public liability insurance policy before the consignment is released.

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Frequently asked

Does HSN 2920 24 00 require BIS certification?

No. Triethyl phosphite is not within the BIS Quality Control Order regime; no BIS QCO covers this product family. Import is governed by the Central Insecticides Board and Registration Committee under the Insecticides Act, 1968, with CWC Category 1C notification obligations under ITC (HS) policy condition 3 of Chapter 29 and CBIC Circular 23/2023-Cus qualifiers at the bill of entry.

Are imports of triethyl phosphite restricted to specific ports?

Yes. Where the substance falls within the Schedule to the Insecticides Act, 1968, import is permitted only at the places specified under Rule 45 of the Insecticides Rules, 1971; the CIB&RC registration and permit must also cover the intended port of entry.

Does the NDPS Rules overlay apply to every import of triethyl phosphite?

Only if the specific substance or formulation is scheduled under the NDPS Rules, 1985; in that case an import certificate under Rule 53 of the NDPS Rules, 1985 must be obtained before import, failing which the consignment is subject to seizure and prosecution under the NDPS framework.

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