HSN code 2831: Dithionites And Sulphoxylates

HSN heading 2831 sits in chapter 28 (Inorganic chemicals; compounds of precious metals, rare-earth metals and radioactive elements). It has 4 8-digit tariff items. On a tax invoice, businesses with turnover up to ₹5 crore show at least the 4-digit code 2831; above ₹5 crore, the 6-digit sub-heading.

⚠️About GST rates: GST rates on many goods changed from 22 September 2025, when most items moved to the 5% and 18% slabs and a few to 40%. This finder lists codes and descriptions only — confirm the rate for your item in the current CBIC rate notification before you invoice.

8-digit tariff items under 2831

HSN code	Description
28311010	Of Sodium : Sodium Dithionites (Sodium Hydrosulphite)
28311020	Of Sodium : Sodium Sulphoxylates (Including Sodium Formaldehyde Sulphoxylate)
28319010	Other : Dithionites
28319020	Other : Sulphoxylates

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