Butyl methylphosphinate

Butyl methylphosphinate, organo-phosphorus compound

DGFT CLEARANCE · CBIC CLEARANCE

HSN 2931 49 40 (Butyl methylphosphinate) is governed by the Directorate General of Foreign Trade (DGFT) ITC (HS) import policy, under which import is currently Free per DGFT Notification 44/2025-26 dated 15-10-2025, subject to Chemical Weapons Convention (CWC) schedule controls administered by the National Authority, CWC. Central Board of Indirect Taxes and Customs (CBIC) mandatory Chapter 29 qualifier declarations and Public Liability Insurance obligations under S.O. 227(E) apply as additional clearance requirements at the bill of entry.

What this is

HSN code

2931 49 40

Chapter

29 · Organic chemicals

Primary regulator

DGFT · ITC (HS) Free import policy with CWC schedule controls, Chapter 29

Customs documentation

CWC notification declaration to DGFT
Chapter 29 qualifiers from CBIC
Bill of entry copy to DGFT

Compliance steps

1
Determine whether butyl methylphosphinate corresponds to Schedule 1 or Schedule 2 of the Chemical Weapons Convention. If Schedule 2, notify the National Authority, CWC (Cabinet Secretariat, Ministry of External Affairs, D&ISA), the Department of Chemicals and Petrochemicals, and DGFT within 30 days of import, and submit a copy of the bill of entry to DGFT within the same 30-day window.
DGFT Notification 44/2025-26 dated 15-10-2025 · Chemical Weapons Convention Act, 2000, Section 15
2
If the substance corresponds to Schedule 1 of the Chemical Weapons Convention, obtain prior permission from the National Authority, CWC before filing the bill of entry; import without such permission is prohibited 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
3
Ensure mandatory additional qualifier declarations for Chapter 29 commodities are included in the import declaration at the bill of entry, in compliance with CBIC Circular 23/2023-Cus dated 30-09-2023, paragraphs 4.1 and 4.2, effective 15-10-2023. If import quantities exceed specified thresholds for hazardous substances, take out a Public Liability Insurance policy per S.O. 227(E) dated 24-03-1992.
CBIC Circular 23/2023-Cus dated 30-09-2023 · S.O. 227(E) dated 24-03-1992

A word of counsel

The most common error on this tariff line is assuming the Free import status under DGFT Notification 44/2025-26 extinguishes CWC schedule obligations. Free status governs the trade-policy classification only; the post-import notification to the National Authority, CWC within 30 days is a standalone statutory obligation under the Chemical Weapons Convention Act, 2000, and failure to notify — even on a consignment that clears customs without incident — constitutes a separate criminal exposure under that Act.

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Frequently asked

Does HSN 2931 49 40 require BIS certification?

No. Butyl methylphosphinate is not within the BIS Quality Control Order regime; no BIS QCO covers this organo-phosphorus compound. Import is governed by DGFT ITC (HS) policy under Notification 44/2025-26, with CWC schedule controls under the Chemical Weapons Convention Act, 2000.

What is the 30-day post-import notification obligation under the CWC schedule controls?

For Schedule 2 substances, the importer must notify the National Authority, CWC, the Department of Chemicals and Petrochemicals, and DGFT within 30 days of each import consignment, and submit a copy of the bill of entry to DGFT within the same period.

When does the Public Liability Insurance requirement apply to this import?

The Public Liability Insurance Act, 1991 obligation is triggered when the import quantity of a specified hazardous substance exceeds the threshold quantities prescribed under S.O. 227(E) dated 24-03-1992 issued by the Ministry of Environment, Forest and Climate Change.

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