Manufacturers in the fertilizer, polymer, and textile finishing sectors purchase these acids to act as catalysts or pH adjusters, especially in the production of specialty polymers and as mordants in dyeing processes.
HSN code 28092020 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
Polyphosphoric acids are concentrated mixtures of orthophosphoric acid and its condensed derivatives, often appearing as clear, viscous liquids; unlike HSN 28092010 (phosphoric acid), this code covers the higher‑molecular‑weight, more reactive acid forms used in industrial chemistry.
When shipping polyphosphoric acids, consignments must be sealed in corrosion‑resistant containers, typically steel drums, and accompanied by a Material Safety Data Sheet detailing handling precautions and emergency response measures.
Related HSN Codes (Heading 2809)
Frequently Asked Questions
No. HSN 28092020 is classified as Free under DGFT ITC(HS) policy, so it can be exported from India without an export license or permit.
HSN 28092020 refers to polyphosphoric acids, which are used mainly as industrial catalysts and chemical intermediates.
HSN 28092020 falls under Chapter 28 and Heading 2809 of India's customs tariff schedule.
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