Sulfanilic acid (CAS 121-57-3): import duty, licences and trade rules in India
4-aminobenzenesulfonic acid is an aminobenzenesulfonic acid that is aniline sulfonated at the para-position. 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 2921 42 34). DGFT policy: import Free, export Free.
Checked 2026-10-31 against official Indian and international lists. Sources are given under each answer.
Key facts
| CAS number | 121-57-3 |
|---|---|
| Formula | C6H7NO3S |
| Also called | 4-Aminobenzenesulfonic acid, Sulphanilic acid, Aniline-4-sulfonic acid, p-Aminobenzenesulfonic acid |
| Tariff item (HS) | 2921 42 34 |
| Total import duty | about 27.73% |
| Anti-dumping duty (most producers) | None found |
| DGFT import policy | Free |
| DGFT export policy | Free |
| 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.
- Import policy (DGFT ITC(HS)) for tariff item 2921 42 34: Free, so no import licence is needed under trade policy.
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.
- Export policy (DGFT ITC(HS)) for tariff item 2921 42 34: Free.
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 612-014-00-X): Eye Irrit. 2, Skin Irrit. 2, Skin Sens. 1. Suppliers in the EU must label it this way.
Import dutyOK
- 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 2921 42 34: Sulphanillic acid (para aminobenzene sulphonic acid para aniline sulphonic acid).
SafetyCHECK
- Irritates skin, eyes or breathing
- Causes skin irritation
- May cause an allergic skin reaction
- Causes serious eye irritation
- Always read the supplier’s safety data sheet (SDS) before handling.
Storage, transport & PESOOK
- Ships as UN 2585 (Corrosive): 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 Sulfanilic acid
What is the import duty on Sulfanilic acid in India?
The total import duty on Sulfanilic acid is about 27.73% of the import value under tariff item 2921 42 34, including basic customs duty, the social welfare surcharge and IGST. Check the latest notifications before you import.
Is there anti-dumping duty on Sulfanilic acid?
No anti-dumping duty on Sulfanilic acid was found in the Customs (ADD) notifications in force.
What is the HS code (tariff item) of Sulfanilic acid in India?
Sulfanilic acid falls under tariff item 2921 42 34 of the Customs Tariff of India.
Is Sulfanilic acid 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 Sulfanilic acid be imported freely into India?
Under DGFT's ITC(HS) import policy, Sulfanilic acid is Free.
Does exporting Sulfanilic acid from India need a licence?
No export licence needed. Not on the SCOMET export-control list or the precursor export list.
Is Sulfanilic acid hazardous?
Hazardous: take normal precautions. Irritates skin, eyes or breathing. Causes skin irritation. May cause an allergic skin reaction.
Is Sulfanilic acid 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.