Manufacturers of fertilizers and specialty chemicals purchase these acids to synthesize nitrogen‑rich intermediates, while textile firms use them for dye fixation processes.
HSN code 28080020 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
Sulphonitric acids are highly reactive, water‑soluble compounds used mainly in industrial chemistry; unlike the adjacent HSN 28080010 (sulphonic acids), they contain additional nitro groups that alter their oxidative properties.
Products must be shipped in double‑sealed, inert containers to prevent reaction with container lining, and documentation should include a certificate of purity due to their hazardous nature.
Related HSN Codes (Heading 2808)
Frequently Asked Questions
No. HSN 28080020 is classified as Free under DGFT ITC(HS) policy, so it can be exported from India without an export license or permit.
HSN 28080020 covers the export of sulphur‑nitric acids, which are employed as reagents in the production of nitrogen‑based compounds.
HSN 28080020 falls under Chapter 28 and Heading 2808 of India's customs tariff schedule.
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