Sodium Thiosulfate (CAS 7772-98-7): import duty, licences and trade rules in India

Sodium thiosulfate is an inorganic sodium salt composed of sodium and thiosulfate ions in a 2:1 ratio. For trade in India: Stop and check: protected in the US until 2031-03-29. Import duty is about 27.73% (tariff item 2832 30 10). DGFT policy: import Free, export Free.

Stop and check: protected in the US until 2031-03-29.

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

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Key facts

CAS number7772-98-7
FormulaNa2O3S2
Also calledSodium thiosulphate, Disodium thiosulfate, Hypo, Chlorine Control
Tariff item (HS)2832 30 10
Total import dutyabout 27.73%
Anti-dumping duty (most producers)None found
DGFT import policyFree
DGFT export policyFree
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.
  • Import policy (DGFT ITC(HS)) for tariff item 2832 30 10: Free, so no import licence is needed under trade policy.
Source: CIB&RC pesticide lists · CDSCO new drug approvals · NDPS RCS Order 2013 · DGFT ITC(HS) 2022, Schedule 1 Import Policy

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.
  • Export policy (DGFT ITC(HS)) for tariff item 2832 30 10: Free.
Source: DGFT SCOMET list · NDPS RCS Order 2013 · DGFT ITC(HS) 2022, Schedule 2 Export Policy

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).
  • 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.
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
  • About ₹27,730 duty on every ₹1,00,000 of import value (CIF).
  • Made up of basic customs duty 7.5%, social welfare surcharge 0.75% and IGST 18%. IGST can usually be claimed back as input tax credit.
  • Tariff item 2832 30 10: Sodium thiosulphate (hypo).
Source: Customs Tariff of India, CBIC · Notification 45/2025-Customs · Notification 9/2025-Integrated Tax (Rate)

SafetyOK

Not classified as hazardous
  • 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

US patentsSTOP

Protected in the US until 2031-03-29
  • The molecule itself is under US patent or exclusivity.
  • Indian patents are not checked.
Source: FDA Orange Book

Questions about Sodium Thiosulfate

What is the import duty on Sodium Thiosulfate in India?

The total import duty on Sodium Thiosulfate is about 27.73% of the import value under tariff item 2832 30 10, including basic customs duty, the social welfare surcharge and IGST. Check the latest notifications before you import.

Is there anti-dumping duty on Sodium Thiosulfate?

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

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

Sodium Thiosulfate falls under tariff item 2832 30 10 of the Customs Tariff of India.

Is Sodium Thiosulfate 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.

Can Sodium Thiosulfate be imported freely into India?

Under DGFT's ITC(HS) import policy, Sodium Thiosulfate is Free.

Does exporting Sodium Thiosulfate from India need a licence?

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

Is Sodium Thiosulfate hazardous?

Not classified as hazardous. Always read the supplier’s safety data sheet (SDS) before handling.

Is Sodium Thiosulfate 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

Ammonium SulfiteAmmonium thiosulfateCalcium sulfitePotassium MetabisulfitePotassium SulfitePotassium thiosulfateSodium BisulfiteSodium PyrosulfiteSodium Sulfite

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