Manufacturers of detergents, dyes, and pharmaceuticals purchase sulphonic acid to act as a catalyst or intermediate in their production processes.
HSN code 28111940 is classified as Free under India's DGFT ITC(HS) export policy — no export license is required.
This product may be freely exported/imported from India without a license.
HSN Code Details
Sulphonic acid is a clear, corrosive liquid produced by oxidizing sulfur dioxide in the presence of oxygen and sulfuric acid, resulting in a highly reactive compound used in chemical synthesis.
When shipping sulphonic acid, it must be packed in corrosion‑resistant, sealed containers and accompanied by a free‑export declaration, as the commodity is freely exportable from India without a license.
Related HSN Codes (Heading 2811)
- 28114 Chemically defined complex acids consisting of a non-metal acid of Sub-Chapter II and a metal acid of Sub-Chapter IV are to be classified in headingFree
- 28111100Hydrogen fluoride (hydrofluoric acid)Free
- 28111200Hydrogen cyanide (hydrocyanic acid)Free
- 281119Other inorganic acids : -- OtherFree
- 28111920(phosphinic acid)Free
- 28111930Acids of arsenicFree
Frequently Asked Questions
No. HSN 28111940 is classified as Free under DGFT ITC(HS) policy, so it can be exported from India without an export license or permit.
HSN 28111940 is used as a chemical reagent in industrial processes, such as in the manufacture of detergents, dyes, and pharmaceuticals.
HSN 28111940 falls under Chapter 28 and Heading 2811 of India's customs tariff schedule.
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