1-[N,N-Dialkyl (≤C10) -N-(n-(hydroxyl, cyano, acetoxy)alkyl (≤C10)) ammonio]-n-[N-(3- dimethylcarbamoxy-α-picolinyl)-N,N-dialkyl (≤C10) ammonio]decane dibromide (n=1-8)
Quaternary ammonium heterocyclic dibromide compounds (nitrogen heteroatom)
HSN 2933 39 50 covers a specialised quaternary ammonium dibromide compound and is governed primarily by the Directorate General of Foreign Trade (DGFT) import policy under the ITC (HS) Schedule, with the import classified as Free per DGFT Notification 44/2025-26. Where the substance corresponds to Schedule 1 of the Chemical Weapons Convention, import is restricted and requires prior permission from the National Authority, Chemical Weapons Convention, under Section 15 of the Chemical Weapons Convention Act, 2000; mandatory Chapter 29 additional qualifiers under CBIC Circular 23/2023-Cus apply at the bill-of-entry stage.
- Permission letter from National Authority CWC
- Chapter 29 qualifiers from CBIC
- Insurance policy from MoEF
- 1Determine whether the specific substance falls within Schedule 1 of the Chemical Weapons Convention. If it does, obtain prior written permission from the National Authority, Chemical Weapons Convention before shipment; import without that permission is a criminal offence under Section 15 of the Chemical Weapons Convention Act, 2000.Chemical Weapons Convention Act, 2000, Section 15; DGFT Notification 44/2025-26 dated 15-10-2025
- 2Comply with mandatory additional qualifiers in the import declaration 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. Failure to include the required qualifiers results in rejection of the bill of entry at the customs system level.CBIC Circular 23/2023-Cus dated 30-09-2023, paras 4.1 and 4.2
- 3Where the import quantity of specified hazardous substances exceeds the prescribed threshold, arrange a public liability insurance policy as required under the Public Liability Insurance Act, 1991 before clearance. The threshold and coverage requirements are detailed in S.O. 227(E) dated 24-03-1992 issued by the Ministry of Environment and Forests.Public Liability Insurance Act, 1991; S.O. 227(E) dated 24-03-1992 (MoEF)
The most common error on this tariff line is assuming that the Free ITC (HS) policy classification eliminates all pre-import obligations. The CWC Schedule 1 restriction is an independent overlay that operates regardless of the general import-policy status: a consignment arriving without the National Authority permission where the substance is Schedule 1-controlled faces confiscation and criminal prosecution under the Chemical Weapons Convention Act, 2000 — not merely a documentation deficiency attracting a monetary penalty. Substance-specific classification against the CWC schedules must be completed before the purchase order is placed.