Trimethyl phosphite
Trimethyl phosphite, technical grade
HSN 2920 23 00 (Trimethyl phosphite) is covered by a Bureau of Indian Standards Quality Control Order. Conformity to IS 17412:2020 is mandatory under the ISI Mark Scheme with effect from 15 October 2023, by virtue of the Trimethyl Phosphite (Quality Control) Order, 2022. Chemical Weapons Convention notification obligations, Narcotic Drugs and Psychotropic Substances Act conditions, insecticide registration requirements, and Public Liability Insurance obligations apply as separate customs-clearance overlays.
Procedural directions for customs clearance are issued by: Central Board of Indirect Taxes and Customs, Directorate General of Foreign Trade.
- 1Source only from a Bureau of Indian Standards CM/L-licensed manufacturer holding a current licence against IS 17412:2020 for Trimethyl phosphite technical grade. Verify the supplier's CM/L number, licensed product scope, and licensed manufacturing facility on the BIS online register before placing the purchase order.Trimethyl Phosphite (Quality Control) Order, 2022 · S.O. 1637(E) dated 05-04-2022 · Scheme-I of Schedule-II to the BIS (Conformity Assessment) Regulations, 2018
- 2Ensure every consignment bears the ISI mark and the supplier's CM/L number as required under Scheme-I of Schedule-II to the BIS (Conformity Assessment) Regulations, 2018. The standard mark must appear on the product or its primary container, not on outer packaging alone.Trimethyl Phosphite (Quality Control) Order, 2022 · S.O. 1637(E) dated 05-04-2022
- 3Within 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 DGFT. Submit a copy of the bill of entry to DGFT within the same 30-day window.Appendix-II of ITC (HS) Import Policy · Policy condition 3 of Chapter 29 · CWC Act and Rules
- 4If the consignment also falls under the Schedule to the Insecticides Act, 1968, obtain registration and a permit from the secretariat of the Central Insecticides Board and Registration Committee. Import is restricted to places specified under Rule 45 of the Insecticides Rules, 1971.Insecticides Act, 1968 · Rule 45 of the Insecticides Rules, 1971
- 5Where import quantities exceed the specified threshold, take out a Public Liability Insurance policy as required under the Public Liability Insurance Act, 1991. Include mandatory additional qualifiers in the import declaration per CBIC Circular 23/2023-CUS for Chapter 29 commodities with effect from 15-10-2023.S.O. 227(E) dated 24-03-1992 · CBIC Circular 23/2023-CUS dated 30-09-2023, para 4.1 and 4.2
The single most common error on this tariff line is treating the Chemical Weapons Convention Category 1C notification as the dominant compliance burden and allowing the BIS QCO to be handled as an afterthought. The statutory hook for port detention is import of Trimethyl phosphite technical grade without an ISI mark from a CM/L-licensed supplier; a consignment with complete CWC notification paperwork but sourced from an unlicensed or scope-mismatched manufacturer will be detained and faces confiscation under the BIS Act, 2016, regardless of CWC compliance status.