What is HSN Code 40021910?
HSN code 40021910 is the Harmonized System of Nomenclature classification for Oil Extended Styrene Butadiene Rubber under India's Goods and Services Tax (GST). It is a 8-digit code sitting at the tariff item (8-digit) level of the HSN hierarchy.
This code belongs to Chapter 40 — Rubber And Articles Thereof, which is part of Section VII: Plastics & Rubber. Every GST-registered business supplying oil extended styrene butadiene rubber must quote HSN 40021910 (or the digit-length required for its turnover) on tax invoices and in GSTR-1.