Diethyl phosphite

Diethyl phosphite, Category 1C CWC-scheduled chemical

CIB&RC CLEARANCE · NDPS CLEARANCE

HSN 2920 22 00 (Diethyl phosphite) is subject to Central Insecticides Board and Registration Committee (CIB&RC) registration and port-restricted import permit under Rule 45 of the Insecticides Rules, 1971, where the substance figures in the Schedule to the Insecticides Act, 1968. As a Category 1C chemical under the Chemical Weapons Convention (CWC), each consignment must be notified within 30 days of import to the National Authority and DGFT under Policy Condition 3 of Chapter 29. NDPS-framework conditions and CBIC Chapter 29 mandatory qualifiers under Circular 23/2023-Cus apply as additional clearance requirements.

What this is

HSN code

2920 22 00

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
Where diethyl phosphite falls within the Schedule to the Insecticides Act, 1968, obtain registration and an import permit from the Secretariat of the Central Insecticides Board and Registration Committee before dispatch. Import is restricted to ports notified under Rule 45 of the Insecticides Rules, 1971; routing through any non-notified port renders the consignment liable to seizure.
Insecticides Act, 1968 · Rule 45 of the Insecticides Rules, 1971 · ITC (HS) Policy Condition 3 of Chapter 29
2
Within 30 days of each import, notify consignment details to the National Authority (CWC), Cabinet Secretariat (Ministry of External Affairs, D&ISA), Department of Chemicals and Petrochemicals, and the Directorate General of Foreign Trade (DGFT), and submit a copy of the bill of entry to DGFT. This post-import notification is mandatory for every consignment of the Category 1C chemical diethyl phosphite under Appendix II of the ITC (HS) import policy.
CWC Act and Rules · ITC (HS) Policy Condition 3 of Chapter 29 · Appendix II of ITC (HS) Import Policy
3
Ensure all import declarations include the mandatory additional qualifiers for Chapter 29 commodities as stipulated in paragraphs 4.1 and 4.2 of CBIC Circular 23/2023-Cus, with effect from 15 October 2023. Additionally, if the imported quantity of this hazardous substance exceeds the specified threshold, obtain a public liability insurance policy under 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 single most common error on this tariff line is treating the 30-day post-import CWC notification as an internal record-keeping exercise rather than a binding multi-agency obligation. Failure to notify the National Authority, Cabinet Secretariat (D&ISA), Department of Chemicals and Petrochemicals, and DGFT — and to deliver the bill of entry copy to DGFT — within 30 days of each consignment constitutes a violation of the CWC Act and Rules, independent of whether the CIB&RC registration and port-compliance obligations were met correctly.

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Frequently asked

Does HSN 2920 22 00 require BIS certification?

No, diethyl phosphite 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 mandatory CWC Category 1C post-import notification obligations under the CWC Act and Rules and ITC (HS) Policy Condition 3 of Chapter 29.

Are there port restrictions for importing diethyl phosphite under the Insecticides Rules, 1971?

Yes. Rule 45 of the Insecticides Rules, 1971 restricts import to notified ports only; consignments arriving at non-notified ports are subject to detention and seizure regardless of the validity of the CIB&RC registration and permit.

Does the NDPS framework apply to diethyl phosphite, and when does it govern the import?

Where diethyl phosphite is classified as an NDPS-listed substance, imports for medical and scientific purposes require an import certificate under Rule 53 of the NDPS Rules, 1985; all other imports are governed by Appendix I of the ITC (HS) Schedule per Policy Condition 2 of Chapter 29.

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