Mercaptan

Mercaptan and other organo-sulphur compounds

HSN 2930 90 17 (Mercaptan) is subject to mandatory registration or import permit under Section 9 of the Insecticides Act administered by the Central Insecticides Board and Registration Committee (CIB&RC), where the substance is used as an insecticide, rodenticide, fungicide, or herbicide, and to import certificate requirements under Chapter VII-A of the NDPS Rules, 1985 for any narcotic or psychotropic application. The Ministry of Environment, Forest and Climate Change (MEFCC) public liability insurance obligation under S.O. 227(E) and the Directorate General of Foreign Trade (DGFT) policy condition 7 of Chapter 29 apply as additional clearance requirements.

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

1. 1
   Obtain a Certificate of Registration or Import Permit from the Central Insecticides Board and Registration Committee before shipment. Where the chemical is imported for a non-insecticidal purpose, a separate import permit is required from the Registration Committee under the Department of Agriculture and Cooperation; the certificate must specify the approved source of supply, and import from any other source is unlawful under Rule 45 of the Insecticides Rules, 1971.
   Section 9 of the Insecticides Act · Rule 45 of the Insecticides Rules, 1971 · CBIC Circular 35/2011 dated 09-08-2011 · CBIC Circular 7/2014 dated 07-03-2014
2. 2
   Upload all mandatory documents in e-Sanchit at the bill of entry before out-of-charge: Certificate of Analysis – Drug (0010dc), Batch Release Certificate (0030dc), Label of Consignment (0110dc), Registration Certificate – Drugs (101dc1), and Import Licence for Drugs (9111dc). Also ensure compliance with the mandatory Chapter 29 additional qualifiers per CBIC Circular 23/2023-Cus dated 30-09-2023, effective 15-10-2023.
   CBIC Circular 23/2023-Cus dated 30-09-2023 · e-Sanchit document codes 0010dc, 0030dc, 0110dc, 101dc1, 9111dc
3. 3
   If the substance qualifies as an NDPS substance, obtain an import certificate under Rule 53 of the NDPS Rules, 1985 for medical and scientific purposes under Chapter VII-A of those Rules; imports outside that category are governed by Appendix-I to the ITC (HS) Schedule under ITC (HS) policy condition 2 of Chapter 29. Where the import involves a specified hazardous substance exceeding notified quantities, take out a public liability insurance policy as required under S.O. 227(E) dated 24-03-1992.
   NDPS Rules, 1985 — Rule 53 and Chapter VII-A · ITC (HS) policy condition 2 of Chapter 29 · S.O. 227(E) dated 24-03-1992 · DGFT Notification 44/2025-26 dated 15-10-2025