Isoprothiolane (CAS 50512-35-1): import duty, licences and trade rules in India

Isoprothiolane is a malonate ester that is diisopropyl malonate in which the two methylene hydrogens at position 2 are replaced by a 1,3-dithiolan-2-ylidene group. For trade in India: OK to trade, but watch: food residue limits. Import duty is about 27.73% (tariff item 2934 (estimate)).

OK to trade, but watch: food residue limits.

Checked 2026-10-31 against official Indian and international lists. Sources are given under each answer.

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Key facts

CAS number50512-35-1
FormulaC12H18O4S2
Also calledFuji-one, NKK 100, bis(1-methylethyl) 1,3-dithiolan-2-ylidenepropanedioate, Di-isopropyl 1,3-dithiolane-2-ylidenemalonate
Tariff item (HS)2934 (estimate)
Total import dutyabout 27.73%
Anti-dumping duty (most producers)None found
SCOMET (export control)Not listed
NDPS / precursorNot listed

Every answer, with its source

Rules in IndiaOK

Allowed, under the normal registration
  • Registered as a pesticide with CIB&RC, so registered companies may make, import and sell it.
Source: CIB&RC pesticide lists · CDSCO new drug approvals · NDPS RCS Order 2013

Exporting from IndiaOK

No export licence needed
  • Not on the SCOMET export-control list or the precursor export list.
  • Not approved as a pesticide in the EU: food sent there must carry almost none of it.
  • The buyer’s country may still have its own import rules.
Source: DGFT SCOMET list · NDPS RCS Order 2013

Global treaties & export marketsOK

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).
  • No EU REACH registration found: an EU importer (or your only representative) must register it before importing a tonne or more a year. Medicines and pesticide actives follow their own EU rules.
  • Not on the US TSCA Inventory, which does not cover medicines or pesticides; those are regulated by the FDA and EPA (FIFRA).
Source: Stockholm Convention, all listed POPs · Rotterdam Convention Annex III · Montreal Protocol annexes (ozone layer, Kigali HFCs) · US EPA TSCA Inventory · ECHA REACH lists, as published in PubChem

Import dutyOK

About 27.73% of the import value (estimate)
  • 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 (an ester, classified by its 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.
Source: Customs Tariff of India, CBIC · Notification 45/2025-Customs · Notification 9/2025-Integrated Tax (Rate)

SafetyCHECK

Hazardous: take normal precautions
  • Irritates skin, eyes or breathing
  • Harmful to fish and water life
  • Harmful if swallowed
  • Toxic to aquatic life with long lasting effects
  • Always read the supplier’s safety data sheet (SDS) before handling.
Source: PubChem GHS classification

Food residue limitsCHECK

Limits set for food crops
  • India (FSSAI) sets limits for 1 foods, for example Rice 0.1 mg/kg.
  • EU: not approved; most EU food limits are at the detection limit.
Source: FSSAI Contaminants Regulations · EU Pesticides Database

Price and suppliersNO DATA

Not on RasayanXchange yet
  • Post a requirement and we will find suppliers for you.
Source: RasayanXchange market data

Questions about Isoprothiolane

What is the import duty on Isoprothiolane in India?

The total import duty on Isoprothiolane 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 Isoprothiolane?

No anti-dumping duty on Isoprothiolane was found in the Customs (ADD) notifications in force.

What is the HS code (tariff item) of Isoprothiolane in India?

Isoprothiolane falls under tariff item 2934 (estimate) of the Customs Tariff of India.

Is Isoprothiolane restricted or licensed in India?

Allowed, under the normal registration. Registered as a pesticide with CIB&RC, so registered companies may make, import and sell it.

Does exporting Isoprothiolane from India need a licence?

No export licence needed. Not on the SCOMET export-control list or the precursor export list.

Is Isoprothiolane hazardous?

Hazardous: take normal precautions. Irritates skin, eyes or breathing. Harmful to fish and water life. Harmful if swallowed.

Is Isoprothiolane 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). No EU REACH registration found: an EU importer (or your only representative) must register it before importing a tonne or more a year. Medicines and pesticide actives follow their own EU rules.

Related chemicals

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Guidance from official lists, not legal advice. Rules change; confirm with DGFT, customs or the regulator before you trade.