1,n-Bis[N-(3-dimethylcarbamoxy-a-picolyl)-N,Ndialkyl (≤C10) ammonio]-alkane-(2,(n-1)-dione) dibromide (n=2-12)
Bis-picolyl dialkylammonio alkanedione dibromide specialty chemical
HSN 2933 39 60 covers a specialised nitrogen-heterocyclic quaternary ammonium compound whose import is classified as Free under the Directorate General of Foreign Trade (DGFT) Notification 44/2025-26 dated 15-10-2025. Where the substance corresponds to Schedule 1 of the Chemical Weapons Convention, import requires prior permission from the National Authority, Chemical Weapons Convention, under Section 15 of the Chemical Weapons Convention Act, 2000. Central Board of Indirect Taxes and Customs (CBIC) mandatory Chapter 29 additional qualifiers in the import declaration apply with effect from 15 October 2023.
- Permission letter from National Authority CWC
- Chapter 29 qualifiers from CBIC
- Insurance policy from MoEF
- 1Verify whether the specific compound being imported corresponds to 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 this permission is prohibited under Section 15 of the Chemical Weapons Convention Act, 2000.Section 15, Chemical Weapons Convention Act, 2000 · DGFT Notification 44/2025-26 dated 15-10-2025
- 2Ensure the import declaration includes mandatory additional qualifiers for Chapter 29 commodities as stipulated in paragraphs 4.1 and 4.2 of CBIC Circular 23/2023-Cus dated 30-09-2023, with effect from 15 October 2023. Non-compliance renders the declaration defective and liable to detention at the customs station.CBIC Circular 23/2023-Cus dated 30-09-2023, para 4.1 and 4.2
- 3Where the imported quantity of this hazardous substance exceeds the specified threshold, the owner must take out a public liability insurance policy as required under the Public Liability Insurance Act, 1991. The applicable quantities and policy conditions are governed by 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 relying solely on the Free import status under DGFT Notification 44/2025-26 and overlooking the Chemical Weapons Convention Schedule 1 overlay. Even a Free-policy tariff line is subject to the absolute prohibition on import without National Authority permission if the specific compound falls within Schedule 1; customs out-of-charge is refused regardless of ITC (HS) policy status, and unauthorised import constitutes an offence under the Chemical Weapons Convention Act, 2000. Verify the compound's CWC schedule status with the National Authority before placing the purchase order.