Adhesive/binder manufacturers (cardboard, corrugated box adhesive) and detergent producers requiring specific silica-to-soda ratio grades are the main buyers.
HSN code 28391900 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
HSN 28391900 covers other sodium silicates not classified as metasilicate, including various sodium silicate ratio grades used in adhesives and detergents.
Ships as liquid solution (water glass) in drums or IBC totes, or solid form in bags; the specific SiO2:Na2O ratio must be specified since it determines viscosity and binding/detergency performance.
Related HSN Codes (Heading 2839)
Frequently Asked Questions
No. HSN 28391900 is classified as Free under DGFT ITC(HS) policy, so it can be exported from India without an export license or permit.
Other sodium silicates (28391900) require the specific SiO2:Na2O ratio specified since it directly determines viscosity and performance in adhesive or detergent applications.
HSN 28391900 falls under Chapter 28 and Heading 2839 of India's customs tariff schedule.
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