Other

Other organo-inorganic compounds, residual phosphorus-bonded group chemicals

DGFT CLEARANCE · CBIC CLEARANCE

HSN 2931 49 99 (Other organo-inorganic compounds) is governed by the Directorate General of Foreign Trade (DGFT) import policy, with import classified as Free under DGFT Notification 44/2025-26 dated 15-10-2025, subject to Chemical Weapons Convention (CWC) notification obligations for Schedule 1B chemicals. Central Board of Indirect Taxes and Customs (CBIC) mandatory Chapter 29 qualifiers and, where applicable, the Public Liability Insurance Act, 1991 overlay apply as additional clearance requirements.

What this is

HSN code

2931 49 99

Chapter

29 · Organic chemicals

Primary regulator

DGFT · ITC (HS) Free import policy, Chapter 29; CWC Schedule 1B notification obligation

Customs documentation

Import declaration from DGFT
Chapter 29 qualifiers from CBIC
CWC consignment notification to MEA

Compliance steps

1
File the bill of entry with 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, effective 15-10-2023. Failure to include the specified qualifiers in the import declaration causes the bill of entry to be treated as incomplete, triggering hold and demurrage.
CBIC Circular 23/2023-Cus dated 30-09-2023, paras 4.1 and 4.2
2
If the imported substance falls within Schedule 1B of the Chemical Weapons Convention — defined as chemicals containing a phosphorus atom bonded to one methyl, ethyl or propyl (normal or iso) group but no further carbon atoms, including methylphosphonyl dichloride and dimethyl methylphosphonate — ensure the consignment originates from a State Party to the CWC, and notify the National Authority (Chemical Weapons Convention), Cabinet Secretariat, Ministry of External Affairs (D&ISA); the Department of Chemicals and Petrochemicals; and DGFT within 30 days of import, submitting a copy of the bill of entry to DGFT within the same window.
DGFT Notification 44/2025-26 dated 15-10-2025 · CWC Schedule 1B notification obligation
3
Where the imported hazardous substance is imported in quantities exceeding the specified thresholds, obtain a Public Liability Insurance policy covering third-party liability as required under the Public Liability Insurance Act, 1991. Reference S.O. 227(E) dated 24-03-1992 issued by the Ministry of Environment and Forests for the notified quantities.
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 treating the Free ITC (HS) status as unconditional clearance and overlooking the CWC Schedule 1B post-import notification window. The 30-day notification deadline to MEA (D&ISA), the Department of Chemicals and Petrochemicals, and DGFT — plus the separate obligation to submit the bill of entry copy to DGFT — runs from the date of import, not from the bill of entry filing date; importers who miss this window after lawful clearance face a DGFT compliance breach independent of the customs out-of-charge already granted.

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Frequently asked

Does HSN 2931 49 99 require BIS certification?

No, this residual organo-inorganic compound tariff line is not covered by any BIS Quality Control Order. Import is governed by DGFT policy under DGFT Notification 44/2025-26 — classified as Free — with CWC Schedule 1B notification obligations and CBIC Chapter 29 mandatory qualifiers applying at the bill of entry.

Is fonofos exempt from the CWC Schedule 1B origin restriction?

Yes. Fonofos (O-ethyl S-phenyl ethylphosphonothiolothionate) is explicitly carved out as a 1B chemical whose import is permitted only from State Parties to the Chemical Weapons Convention, but it remains subject to the 30-day post-import notification requirement to the National Authority and DGFT.

When does the Public Liability Insurance obligation arise for this tariff line?

The insurance obligation under the Public Liability Insurance Act, 1991 is triggered when the imported hazardous substance is imported in quantities exceeding the thresholds specified in S.O. 227(E) dated 24-03-1992; imports below those thresholds are not subject to the mandatory policy requirement.

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