1-naphthalenesulfonic acid, 4-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1h-pyrazol-4-yl)azo)-3-hydroxy-, monosodium saltCAS 3618-63-1 · import duty, licences and trade rules in India

C20H15N4NaO5S · also called 1-Naphthalenesulfonic acid, 4-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo)-3-hydroxy-, monosodium salt, 1-Naphthalenesulfonic acid, 4-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-3-hydroxy-, monosodium salt, 1-Naphthalenesulfonic acid, 4-[2-(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)diazenyl]-3-hydroxy-, sodium salt (1:1), Sodium 4-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo)-3-hydroxynaphthalene-1-sulphonate
No ban or licence needed. Normal trade rules apply; handle as its safety advice says.
Import dutyOKAbout 27.73%HS 3204 12 (subheading)Rules in IndiaOKNo special Indian ban or licence foundExportOKNo export licence neededSafetyCHECKHazardous: take normal precautions

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 3204 12 (subheading)).

Checked 2026-11-12 against official Indian and international lists. Sources are given under each answer.

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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.
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 (depends on the line)
  • About ₹27,730 duty on every ₹1,00,000 of import value (CIF). Some lines under this subheading pay a different rate.
  • The EU customs inventory (ECICS) classifies it under CN 3204 12 00, so its HS subheading is 3204 12.
  • India splits subheading 3204 12 into 47 lines: 3204 12 11 (Azo dyes › Acid yellows), duty 10%; 3204 12 12 (Azo dyes › Acid oranges); 3204 12 13 (Azo dyes › Acid red); 3204 12 14 (Azo dyes › Acid violets); 3204 12 15 (Azo dyes › Acid blues); 3204 12 16 (Azo dyes › Acid greens); and 41 more.
  • Basic customs duty 7.5% on 43 of them; with social welfare surcharge and IGST 18% that makes about 27.73%.
  • Lines that name a chemical are for that chemical; one that no line names goes under "Other" (3204 12 19, 3204 12 29, 3204 12 39).
  • Confirm the exact 8-digit line with your customs broker before you import.
Source: Customs Tariff of India, CBIC · Notification 45/2025-Customs · Notification 02/2026-Customs (Budget 2026) · Finance Act 2026, Fifth Schedule (tariff rates from 1 May 2026) · Notification 9/2025-Integrated Tax (Rate) · EU customs inventory of chemicals (ECICS), European Commission

SafetyCHECK

Hazardous: take normal precautions
  • Irritates skin, eyes or breathing
  • Causes skin irritation
  • Causes serious eye irritation
  • May cause respiratory irritation
  • 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

Key facts

CAS number3618-63-1
FormulaC20H15N4NaO5S
Also called1-Naphthalenesulfonic acid, 4-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo)-3-hydroxy-, monosodium salt, 1-Naphthalenesulfonic acid, 4-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-3-hydroxy-, monosodium salt, 1-Naphthalenesulfonic acid, 4-[2-(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)diazenyl]-3-hydroxy-, sodium salt (1:1), Sodium 4-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo)-3-hydroxynaphthalene-1-sulphonate
Tariff item (HS)3204 12 (subheading)
Total import dutyabout 27.73%
Anti-dumping duty (most producers)None found
SCOMET (export control)Not listed
NDPS / precursorNot listed

Questions about 1-naphthalenesulfonic acid, 4-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1h-pyrazol-4-yl)azo)-3-hydroxy-, monosodium salt

What is the import duty on 1-naphthalenesulfonic acid, 4-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1h-pyrazol-4-yl)azo)-3-hydroxy-, monosodium salt in India?

The total import duty on 1-naphthalenesulfonic acid, 4-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1h-pyrazol-4-yl)azo)-3-hydroxy-, monosodium salt is about 27.73% of the import value under tariff item 3204 12 (subheading), including basic customs duty, the social welfare surcharge and IGST. Check the latest notifications before you import.

Is there anti-dumping duty on 1-naphthalenesulfonic acid, 4-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1h-pyrazol-4-yl)azo)-3-hydroxy-, monosodium salt?

No anti-dumping duty on 1-naphthalenesulfonic acid, 4-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1h-pyrazol-4-yl)azo)-3-hydroxy-, monosodium salt was found in the Customs (ADD) notifications in force.

What is the HS code (tariff item) of 1-naphthalenesulfonic acid, 4-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1h-pyrazol-4-yl)azo)-3-hydroxy-, monosodium salt in India?

1-naphthalenesulfonic acid, 4-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1h-pyrazol-4-yl)azo)-3-hydroxy-, monosodium salt falls under HS subheading 3204 12, 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 1-naphthalenesulfonic acid, 4-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1h-pyrazol-4-yl)azo)-3-hydroxy-, monosodium salt 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 1-naphthalenesulfonic acid, 4-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1h-pyrazol-4-yl)azo)-3-hydroxy-, monosodium salt from India need a licence?

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

Is 1-naphthalenesulfonic acid, 4-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1h-pyrazol-4-yl)azo)-3-hydroxy-, monosodium salt hazardous?

Hazardous: take normal precautions. Irritates skin, eyes or breathing. Causes skin irritation. Causes serious eye irritation.

Is 1-naphthalenesulfonic acid, 4-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1h-pyrazol-4-yl)azo)-3-hydroxy-, monosodium salt 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.