Methyl-(bis(diethylamino)methylene) phosphonamidofluoridate

Methyl-(bis(diethylamino)methylene) phosphonamidofluoridate, Schedule 1 CWC chemical

DGFT CLEARANCE · CBIC CLEARANCE

HSN 2931 59 20 (Methyl-(bis(diethylamino)methylene) phosphonamidofluoridate) is classified as a Schedule 1 substance under the Chemical Weapons Convention Act, 2000, and import requires prior permission from the National Authority, Chemical Weapons Convention, under Section 15 of that Act. The Directorate General of Foreign Trade (DGFT) records the tariff line as Free under DGFT Notification 44/2025-26 dated 15-10-2025, but the Schedule 1 restriction operates independently as an overriding condition. Mandatory Chapter 29 additional qualifiers under CBIC Circular 23/2023-Cus apply at the bill-of-entry stage.

What this is

HSN code

2931 59 20

Chapter

29 · Organic chemicals

Primary regulator

DGFT · Chemical Weapons Convention Act, 2000 (Schedule 1 substance, National Authority permission)

Customs documentation

Permission letter from National Authority CWC
Chapter 29 qualifiers from CBIC
Insurance policy from MoEF

Compliance steps

1
Obtain prior written permission from the National Authority, Chemical Weapons Convention, before shipment. This substance corresponds to Schedule 1 of the Chemical Weapons Convention and import is not permitted without this permission under Section 15 of the Chemical Weapons Convention Act, 2000, regardless of the Free ITC (HS) policy status.
Section 15, Chemical Weapons Convention Act, 2000 · DGFT Notification 44/2025-26 dated 15-10-2025
2
Ensure the import declaration includes the mandatory additional qualifiers for Chapter 29 commodities as stipulated in Para 4.1 and 4.2 of CBIC Circular 23/2023-Cus, with effect from 15-10-2023. Non-submission of qualifiers at the bill-of-entry stage causes out-of-charge to be withheld.
CBIC Circular 23/2023-Cus dated 30-09-2023, Para 4.1 and 4.2
3
Where the imported quantity exceeds the specified threshold for hazardous substances, take out a public liability insurance policy under the Public Liability Insurance Act, 1991. The Ministry of Environment and Forests notification S.O. 227(E) dated 24-03-1992 governs the insurance obligation for such consignments.
Public Liability Insurance Act, 1991 · S.O. 227(E) dated 24-03-1992

A word of counsel

The most common error on this tariff line is relying on the Free ITC (HS) status under DGFT Notification 44/2025-26 and filing the bill of entry without the National Authority, Chemical Weapons Convention, permission. The Free classification governs basic tariff policy; the Schedule 1 restriction under Section 15 of the Chemical Weapons Convention Act, 2000 is an independent statutory gate that customs will enforce regardless of ITC (HS) status — a consignment arriving without that permission faces seizure and potential prosecution under the Act.

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Frequently asked

Does HSN 2931 59 20 require BIS certification?

No, this tariff line is not covered by any BIS Quality Control Order. Import is governed by Section 15 of the Chemical Weapons Convention Act, 2000, which requires prior permission from the National Authority, Chemical Weapons Convention, as this substance corresponds to Schedule 1 of the Convention.

What are the mandatory Chapter 29 qualifiers required under CBIC Circular 23/2023-Cus for this HSN?

Para 4.1 and 4.2 of CBIC Circular 23/2023-Cus dated 30-09-2023 stipulate mandatory additional qualifiers in import declarations for commodities under Chapter 29, effective 15-10-2023; the specific qualifier fields must be populated in the bill of entry before out-of-charge is granted.

Does the Finance Bill 2025 change the import conditions for this substance?

The Finance Bill 2025, operative from 01-05-2025, affects the tariff classification framework for this CTI; however, the Schedule 1 Chemical Weapons Convention restriction and the National Authority permission requirement under Section 15 of the Chemical Weapons Convention Act, 2000 continue to apply independently of any tariff amendment.

Last verified against gazette notifications: 2026-05-16. Source: DGFT / CBIC / Indian Customs CUSDATA.