Tetrahydrothiophene (CAS 110-01-0): import duty, licences and trade rules in India
Tetrahydrothiophene is a saturated organic heteromonocyclic parent and a member of tetrahydrothiophenes. For trade in India: No ban or licence needed. Normal trade rules apply; handle as its safety advice says. Import duty is about 27.73% (tariff item 2934 (estimate)).
Checked 2026-10-31 against official Indian and international lists. Sources are given under each answer.
Key facts
| CAS number | 110-01-0 |
|---|---|
| Formula | C4H8S |
| Also called | Thiolane, Thiophane, Thiophene, tetrahydro-, Thiacyclopentane |
| Tariff item (HS) | 2934 (estimate) |
| Total import duty | about 27.73% |
| Anti-dumping duty (most producers) | None found |
| SCOMET (export control) | Not listed |
| NDPS / precursor | Not listed |
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 marketsOK
- Not listed by the Stockholm Convention (persistent pollutants), the Rotterdam Convention (prior consent before export) or the Montreal Protocol (ozone layer).
- 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.
- EU: harmonised classification (CLP Annex VI, index 613-087-00-0): Flam. Liq. 2, Acute Tox. 4, Eye Irrit. 2, Skin Irrit. 2, Aquatic Chronic 3. Suppliers in the EU must label it this way.
Import dutyOK
- About ₹27,730 duty on every ₹1,00,000 of import value (CIF).
- No tariff line names this chemical, so we worked out its likely heading from its structure: 2934, nucleic acids and other heterocyclic compounds (ring containing S).
- All lines under heading 2934 pay basic customs duty 7.5%; with social welfare surcharge and IGST 18% that makes about 27.73%.
- Confirm the exact 8-digit code with your customs broker before you import.
SafetyCHECK
- Catches fire easily
- Irritates skin, eyes or breathing
- Highly flammable liquid and vapor
- Harmful if swallowed
- Harmful in contact with skin
- Causes skin irritation
- Causes serious eye irritation
- Always read the supplier’s safety data sheet (SDS) before handling.
Storage, transport & PESOOK
- Flash point about 12 °C (Hazardous Substances Data Bank (HSDB)).
- It is not a hydrocarbon, so the Petroleum Rules do not class it; storage still follows the state fire service’s rules and the factory licence.
- Ships as UN 2412 (Flammable Liquid): dangerous-goods rules apply by road, sea (IMDG) and air (IATA), with labels, packaging and a transport document.
Price and suppliersNO DATA
- Post a requirement and we will find suppliers for you.
Questions about Tetrahydrothiophene
What is the import duty on Tetrahydrothiophene in India?
The total import duty on Tetrahydrothiophene is about 27.73% of the import value under tariff item 2934 (estimate), including basic customs duty, the social welfare surcharge and IGST. Check the latest notifications before you import.
Is there anti-dumping duty on Tetrahydrothiophene?
No anti-dumping duty on Tetrahydrothiophene was found in the Customs (ADD) notifications in force.
What is the HS code (tariff item) of Tetrahydrothiophene in India?
Tetrahydrothiophene falls under tariff item 2934 (estimate) of the Customs Tariff of India.
Is Tetrahydrothiophene 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 Tetrahydrothiophene from India need a licence?
No export licence needed. Not on the SCOMET export-control list or the precursor export list.
Is Tetrahydrothiophene hazardous?
Dangerous: handle with proper protection. Catches fire easily. Irritates skin, eyes or breathing. Highly flammable liquid and vapor.
Is Tetrahydrothiophene regulated under global treaties or in the EU and US?
No treaty or export-market restriction found. Not listed by the Stockholm Convention (persistent pollutants), the Rotterdam Convention (prior consent before export) or the Montreal Protocol (ozone layer). Registered under EU REACH, so EU importers can buy it under an existing registration.
Related chemicals
Guidance from official lists, not legal advice. Rules change; confirm with DGFT, customs or the regulator before you trade.