Bis(1-methylpentyl) methylphosphonate

Bis(1-methylpentyl) methylphosphonate, organophosphorus compound

DGFT CLEARANCE · CBIC CLEARANCE

HSN 2931 49 50 (Bis(1-methylpentyl) methylphosphonate) is governed by the Directorate General of Foreign Trade (DGFT) under the ITC (HS) import policy, with import currently free per DGFT Notification 44/2025-26 dated 15-10-2025. As an organophosphorus compound potentially corresponding to Schedule 2 of the Chemical Weapons Convention, each consignment requires post-import notification to the National Authority, Chemical Weapons Convention, Cabinet Secretariat, and DGFT within 30 days. Central Board of Indirect Taxes and Customs (CBIC) mandatory Chapter 29 qualifiers in the import declaration apply with effect from 15-10-2023.

What this is

HSN code

2931 49 50

Chapter

29 · Organic chemicals

Primary regulator

DGFT · ITC (HS) import policy, Chapter 29; Chemical Weapons Convention Act, 2000

Customs documentation

Import declaration from DGFT
Chapter 29 qualifiers from CBIC
CWC Schedule notification to Cabinet Secretariat

Compliance steps

1
File the bill of entry with mandatory additional qualifiers for Chapter 29 commodities as required under CBIC Circular 23/2023-Cus dated 30-09-2023, paragraphs 4.1 and 4.2, effective 15-10-2023. Non-compliance with the qualifier requirement renders the import declaration deficient and subject to CBIC query or detention at the bill-of-entry stage.
CBIC Circular 23/2023-Cus dated 30-09-2023, para 4.1 and 4.2
2
Within 30 days of each import, notify consignment details to the National Authority, Chemical Weapons Convention, Cabinet Secretariat, Ministry of External Affairs (D&ISA); the Department of Chemicals and Petrochemicals; and DGFT, and submit a copy of the bill of entry to DGFT. This obligation applies to chemicals corresponding to Schedule 2 of the Chemical Weapons Convention.
ITC (HS) import policy CCR; Chemical Weapons Convention Act, 2000 · DGFT Notification 44/2025-26 dated 15-10-2025
3
If the consignment quantity of this specified hazardous substance exceeds the threshold prescribed under the Public Liability Insurance Act, 1991, take out the mandatory insurance policy before import. Refer to S.O. 227(E) dated 24-03-1992 issued by the Ministry of Environment and Forests for the specified quantities and insurance requirements.
Public Liability Insurance Act, 1991 · S.O. 227(E) dated 24-03-1992 (MoEF)

A word of counsel

The most common error on this tariff line is treating the 'free' ITC (HS) status as a complete clearance and overlooking the post-import CWC Schedule 2 notification obligation, which is a standalone statutory requirement under the Chemical Weapons Convention Act, 2000, independent of customs out-of-charge. Failure to notify the National Authority, Cabinet Secretariat, and DGFT within the 30-day window after each consignment constitutes a separate contravention attracting criminal liability under the Chemical Weapons Convention Act, 2000, even where the import itself was correctly declared at the bill-of-entry stage.

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Frequently asked

Does HSN 2931 49 50 require BIS certification?

No, organophosphorus compounds under this tariff line fall outside the BIS Quality Control Order regime. Import is governed by the Directorate General of Foreign Trade under the ITC (HS) policy — currently free per DGFT Notification 44/2025-26 — with Chemical Weapons Convention Act, 2000 notification obligations and CBIC Chapter 29 qualifier requirements applying at each import.

What is the consequence if this compound corresponds to Schedule 1 rather than Schedule 2 of the Chemical Weapons Convention?

Schedule 1 chemicals are Restricted under the ITC (HS) policy and may be imported only after obtaining prior permission from the National Authority, Chemical Weapons Convention, under Section 15 of the Chemical Weapons Convention Act, 2000; the free-import status applicable to Schedule 2 chemicals does not extend to Schedule 1 substances.

Does the Public Liability Insurance obligation apply to every consignment of this compound?

The insurance requirement under the Public Liability Insurance Act, 1991 is triggered only when the import quantity of the specified hazardous substance exceeds the threshold quantities prescribed in S.O. 227(E) dated 24-03-1992; importers should verify the applicable threshold against each consignment quantity before shipment.

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