Perfluorobutanesulfonic acidCAS 375-73-5 · import duty, licences and trade rules in India
Perfluorobutanesulfonic acid is a perfluoroalkanesulfonic acid that is butane-1-sulfonic acid in which all of the hydrogens of the butyl group have been replaced by fluorines. For trade in India: OK to trade, but watch: global treaties & export markets. Import duty is about 24.49% (tariff item 2904 99 (subheading)).
Checked 2026-11-12 against official Indian and international lists. Sources are given under each answer.
What Perfluorobutanesulfonic acid is, its uses, properties and related chemicals: Perfluorobutanesulfonic acid on ChemXpress →
Every answer, with its source
Rules in IndiaOK
- Not on the Indian banned-pesticide, drug-precursor, narcotic, psychotropic or new-drug lists we check.
- Normal factory, storage and GST rules still apply.
Exporting from IndiaOK
- Not on the SCOMET export-control list or the precursor export list.
- The buyer’s country may still have its own import rules.
Global treaties & export marketsCHECK
- Not listed by the Stockholm Convention (persistent pollutants), the Rotterdam Convention (prior consent before export) or the Montreal Protocol (ozone layer).
- On the EU REACH Candidate List of substances of very high concern (equivalent level of concern having probable serious effects to human health - human health); equivalent level of concern having probable serious effects to the environment - environment)), since 16-Jan-2020. EU buyers must pass on safety information for articles containing more than 0.1%, and it may later need an authorisation.
- Registered under EU REACH, so EU importers can buy it under an existing registration.
- Active on the US TSCA Inventory, so it can be imported into the US without a new-chemical notice.
- Listed on the Australian Inventory of Industrial Chemicals (AICIS), so it can be introduced into Australia as an existing industrial chemical.
Import dutyOK
- About ₹24,490 duty on every ₹1,00,000 of import value (CIF).
- The EU customs inventory (ECICS) classifies it under CN 2904 99 00, so its HS subheading is 2904 99.
- India splits subheading 2904 99 into 8 lines: 2904 99 10 (Other › 2, 5 dichloronitrobenzene); 2904 99 20 (Other › Dinitrochlorebenzene); 2904 99 30 (Other › Meta nitrochlorobenzene); 2904 99 40 (Other › Ortho nitrochlorobenzene); 2904 99 50 (Other › Para nitrochlorobenzene); 2904 99 60 (Other › 2-nitrochlorotoluene); and 2 more.
- Basic customs duty 5% on every one of them; with social welfare surcharge and IGST 18% that makes about 24.49%.
- Lines that name a chemical are for that chemical; one that no line names goes under "Other" (2904 99 90).
- Confirm the exact 8-digit line with your customs broker before you import.
SafetyCHECK
- Burns skin and eyes, eats into metal
- Irritates skin, eyes or breathing
- Harmful if swallowed
- Causes severe skin burns and eye damage
- Always read the supplier’s safety data sheet (SDS) before handling.
Price and suppliersNO DATA
- Post a requirement and we will find suppliers for you.
Key facts
| CAS number | 375-73-5 |
|---|---|
| Formula | C4HF9O3S |
| Also called | Nonafluoro-1-butanesulfonic acid, Nonafluorobutanesulfonic acid, Nonafluorobutane-1-sulfonic acid, 1,1,2,2,3,3,4,4,4-nonafluorobutane-1-sulfonic acid |
| Tariff item (HS) | 2904 99 (subheading) |
| Total import duty | about 24.49% |
| Anti-dumping duty (most producers) | None found |
| SCOMET (export control) | Not listed |
| NDPS / precursor | Not listed |
Questions about Perfluorobutanesulfonic acid
What is the import duty on Perfluorobutanesulfonic acid in India?
The total import duty on Perfluorobutanesulfonic acid is about 24.49% of the import value under tariff item 2904 99 (subheading), including basic customs duty, the social welfare surcharge and IGST. Check the latest notifications before you import.
Is there anti-dumping duty on Perfluorobutanesulfonic acid?
No anti-dumping duty on Perfluorobutanesulfonic acid was found in the Customs (ADD) notifications in force.
What is the HS code (tariff item) of Perfluorobutanesulfonic acid in India?
Perfluorobutanesulfonic acid falls under HS subheading 2904 99, as classified by the EU customs inventory (ECICS). India splits that subheading into several 8-digit lines; confirm the exact line with your customs broker.
Is Perfluorobutanesulfonic acid restricted or licensed in India?
No special Indian ban or licence found. Not on the Indian banned-pesticide, drug-precursor, narcotic, psychotropic or new-drug lists we check. Normal factory, storage and GST rules still apply.
Does exporting Perfluorobutanesulfonic acid from India need a licence?
No export licence needed. Not on the SCOMET export-control list or the precursor export list.
Is Perfluorobutanesulfonic acid hazardous?
Dangerous: handle with proper protection. Burns skin and eyes, eats into metal. Irritates skin, eyes or breathing. Harmful if swallowed.
Is Perfluorobutanesulfonic acid regulated under global treaties or in the EU and US?
EU: substance of very high concern. Not listed by the Stockholm Convention (persistent pollutants), the Rotterdam Convention (prior consent before export) or the Montreal Protocol (ozone layer). On the EU REACH Candidate List of substances of very high concern (equivalent level of concern having probable serious effects to human health - human health); equivalent level of concern having probable serious effects to the environment - environment)), since 16-Jan-2020. EU buyers must pass on safety information for articles containing more than 0.1%, and it may later need an authorisation.
Related chemicals
Guidance from official lists, not legal advice. Rules change; confirm with DGFT, customs or the regulator before you trade.