What is HSN Code 390721?
HSN code 390721 is the Harmonized System of Nomenclature classification for Bis(Polyoxyethylene) Methylphosphonate 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 39 — Plastics And Articles Thereof, which is part of Section VII: Plastics & Rubber. Every GST-registered business supplying bis(polyoxyethylene) methylphosphonate must quote HSN 390721 (or the digit-length required for its turnover) on tax invoices and in GSTR-1.