What is HSN Code 283529?
HSN code 283529 is the Harmonized System of Nomenclature classification for Phosphinates (Hypophosphites), Phosphonates (Phosphites) And Phosphates, Polyphosphates… under India's Goods and Services Tax (GST). It is a 6-digit code sitting at the sub-heading (6-digit) level of the HSN hierarchy.
This code belongs to Chapter 28 — Inorganic Chemicals, Organic Or Inorganic Compounds Of Precious…, which is part of Section VI: Chemical Products. Every GST-registered business supplying phosphinates (hypophosphites), phosphonates (phosphites) and phosphates, polyphosphates… must quote HSN 283529 (or the digit-length required for its turnover) on tax invoices and in GSTR-1.