Phosphorothioic acid, S[2-(diethyl amino) ethyl] O, O-Diethyl ester

Amiton organophosphorus compound, Schedule 2 CWC chemical

CDSCO CLEARANCE · CIB&RC CLEARANCE · +1 OTHER PGAS

HSN 2930 90 21 (Phosphorothioic acid, S[2-(diethylamino)ethyl] O,O-diethyl ester) is subject to Central Insecticides Board and Registration Committee (CIB&RC) mandatory registration or import permit under the Insecticides Act, 1968 and Insecticides Rules, 1971. As a Category 1B Schedule 2 chemical under the Chemical Weapons Convention, each consignment requires post-import notification to the National Authority (Cabinet Secretariat, Ministry of External Affairs) and a bill-of-entry copy submitted to the Directorate General of Foreign Trade (DGFT) within 30 days; import is restricted to state parties to the CWC.

What this is

HSN code

2930 90 21

Chapter

29 · Organic chemicals

Primary regulator

CIB&RC · Insecticides Act, 1968; Insecticides Rules, 1971

Customs documentation

Registration certificate or import permit from CIB&RC
Chapter 29 mandatory qualifiers from CBIC
CWC post-import notification to DGFT

Applicable Partner Government Agencies

CDSCOCDSCO·Central Drugs Standard Control Organisation

CIB&RCCIB&RC·Central Insecticides Board and Registration Committee

MOHFWMOHFW·Ministry of Health and Family Welfare

Procedural directions for customs clearance are issued by: Directorate General of Foreign Trade, Central Board of Indirect Taxes and Customs.

Compliance steps

1
Obtain a valid Certificate of Registration or, where the substance is imported for non-insecticidal purposes, an import permit from the CIB&RC under Section 9 of the Insecticides Act, 1968. The certificate specifies the approved source of import; consignments from any source not listed on the certificate or permit are liable to seizure. Import is permitted only at ports notified under Rule 45 of the Insecticides Rules, 1971.
Section 9 of the Insecticides Act, 1968 · Rule 45 of the Insecticides Rules, 1971 · CBIC Circular 35/2011 dated 09-08-2011 · CBIC Circular 7/2014 dated 07-03-2014
2
Within 30 days of import, notify consignment details to the National Authority Chemical Weapons Convention (Cabinet Secretariat, Ministry of External Affairs, D&ISA Division), the Department of Chemicals and Petrochemicals, and DGFT, and submit a copy of the bill of entry to DGFT. Import is restricted to state parties to the Chemical Weapons Convention; consignments from non-state parties must be refused at the bill-of-entry stage.
Appendix II to Schedule I of ITC (HS) Import Policy — Category 1B CWC Schedule 2 chemical · DGFT Notification 44/2025-26 dated 15-10-2025
3
Ensure the import declaration includes all mandatory additional qualifiers for Chapter 29 commodities as stipulated in Para 4.1 and 4.2 of CBIC Circular 23/2023-Cus dated 30-09-2023, effective 15 October 2023. If the substance is imported as or alongside a medical device listed in G.S.R. 102(E) dated 11-02-2020, Central Drugs Standard Control Organisation (CDSCO) registration conditions under that notification must also be satisfied.
CBIC Circular 23/2023-Cus dated 30-09-2023 · G.S.R. 102(E) dated 11-02-2020 (MOHFW)

A word of counsel

The most common error on this tariff line is treating CIB&RC registration as the sole clearance gate and overlooking the CWC post-import notification obligation, which runs independently and is not tracked by the bill-of-entry system. Failure to notify the National Authority and DGFT within 30 days of each consignment is a separate contravention under the CWC implementation framework, and the 30-day window begins from the date of import — not from out-of-charge or payment of duty. Build the notification workflow into your post-clearance compliance calendar before the vessel arrives.

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Frequently asked

Does HSN 2930 90 21 require BIS certification?

No. No BIS Quality Control Order covers this organo-sulphur compound. Import is governed by the Central Insecticides Board and Registration Committee under the Insecticides Act, 1968 and, as a Category 1B CWC Schedule 2 chemical, by the post-import notification regime administered by DGFT and the National Authority.

Can this substance be imported from any country, and what ports are permitted?

Import is restricted to state parties to the Chemical Weapons Convention; supply from non-state parties is not permitted. Port of import is further restricted to locations notified under Rule 45 of the Insecticides Rules, 1971, and the CIB&RC certificate or permit specifies the approved source.

Does the CIB&RC registration cover imports for non-insecticidal uses?

No. Where the substance is imported for a non-insecticidal purpose, a separate import permit from the CIB&RC Registration Committee is required in lieu of a Certificate of Registration, and the permit conditions — including source restrictions — must be satisfied for each consignment.

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