4,5-Dichloro-2-n-octyl-4-isothiazolin-3-one (CAS 64359-81-5): import duty, licences and trade rules in India

4,5-dichloro-2-n-octyl-3(2H)-isothiazolone is a 1,2-thiazole that is 1,2-thiazol-3(2H)-one substituted by chloro groups at positions 4 and 5 and an octyl group at position 2. For trade in India: OK to trade, but watch: safety. Import duty is about 27.73% (tariff item 2934 (estimate)).

OK to trade, but watch: safety.

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

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Key facts

CAS number64359-81-5
FormulaC11H17Cl2NOS
Also calledKathon 930, 4,5-Dichloro-2-n-octyl-4-isothiazolin-3-one, 4,5-Dichloro-2-n-octyl-3(2H)-isothiazolone, Sea-Nine 211
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

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.
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.
  • 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.
  • 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 613-335-00-8): Acute Tox. 2, Acute Tox. 4, Skin Corr. 1, Eye Dam. 1, Skin Sens. 1A, Aquatic Acute 1. Suppliers in the EU must label it this way.
Source: Stockholm Convention, all listed POPs · Rotterdam Convention Annex III · Montreal Protocol annexes (ozone layer, Kigali HFCs) · EU CLP Regulation Annex VI (harmonised classification) · 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 (ring containing N and 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)

SafetySTOP

Very hazardous: strict controls needed
  • Burns skin and eyes, eats into metal
  • Poisonous, even in small amounts
  • Irritates skin, eyes or breathing
  • Harmful to fish and water life
  • Harmful if swallowed or in contact with skin
  • Harmful if swallowed
  • Harmful in contact with skin
  • Causes severe skin burns and eye damage
  • May cause an allergic skin reaction
  • Always read the supplier’s safety data sheet (SDS) before handling.
Source: PubChem GHS classification

Price and suppliersNO DATA

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

Questions about 4,5-Dichloro-2-n-octyl-4-isothiazolin-3-one

What is the import duty on 4,5-Dichloro-2-n-octyl-4-isothiazolin-3-one in India?

The total import duty on 4,5-Dichloro-2-n-octyl-4-isothiazolin-3-one 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 4,5-Dichloro-2-n-octyl-4-isothiazolin-3-one?

No anti-dumping duty on 4,5-Dichloro-2-n-octyl-4-isothiazolin-3-one was found in the Customs (ADD) notifications in force.

What is the HS code (tariff item) of 4,5-Dichloro-2-n-octyl-4-isothiazolin-3-one in India?

4,5-Dichloro-2-n-octyl-4-isothiazolin-3-one falls under tariff item 2934 (estimate) of the Customs Tariff of India.

Is 4,5-Dichloro-2-n-octyl-4-isothiazolin-3-one 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 4,5-Dichloro-2-n-octyl-4-isothiazolin-3-one from India need a licence?

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

Is 4,5-Dichloro-2-n-octyl-4-isothiazolin-3-one hazardous?

Very hazardous: strict controls needed. Burns skin and eyes, eats into metal. Poisonous, even in small amounts. Irritates skin, eyes or breathing.

Is 4,5-Dichloro-2-n-octyl-4-isothiazolin-3-one 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.

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