What is HSN Code 310311?
HSN code 310311 is the Harmonized System of Nomenclature classification for Containing By Weight 35 % Or More Of Diphosphorus Pentaoxide (P2o5) 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 31 — Fertilisers, which is part of Section VI: Chemical Products. Every GST-registered business supplying containing by weight 35 % or more of diphosphorus pentaoxide (p2o5) must quote HSN 310311 (or the digit-length required for its turnover) on tax invoices and in GSTR-1.