HSN Codes · Chapter 28: Inorganic Chemicals

HSN Code 280421

Inorganic Chemicals — hydrogen, rare gases and other non-metals — argon

Typical GST rate

Varies

Depends on sub-classification

Type

Goods

HSN classification

Code level

6-digit

Sub-heading

Reading code 280421

The first two digits (28) place this code in chapter 28 — Inorganic Chemicals. Heading 2804 groups the product family, and the remaining digits pin down this specific 6-digit classification. Remember: you can never invent a shorter code by truncating a longer one — only codes that exist in the official tariff are valid.

Industrial inorganic chemicals — acids, alkalis, oxides, and salts — plus compounds of precious and rare-earth metals.

Parent heading

2804 — Inorganic Chemicals — hydrogen, rare gases and other non-metals

More specific codes under 280421

  • 28042100 — Inorganic Chemicals — hydrogen, rare gases and other non-metals — argon — argon

Related codes in heading 2804

  • 280410 — Inorganic Chemicals — hydrogen, rare gases and other non-metals — hydrogen
  • 280429 — Inorganic Chemicals — hydrogen, rare gases and other non-metals — other
  • 280430 — Inorganic Chemicals — hydrogen, rare gases and other non-metals — nitrogen
  • 280440 — Inorganic Chemicals — hydrogen, rare gases and other non-metals — oxygen
  • 280450 — Inorganic Chemicals — hydrogen, rare gases and other non-metals — boron; tellurium
  • 280461 — Containing by weight not less than 99.99% of silicon
  • 280469 — Inorganic Chemicals — hydrogen, rare gases and other non-metals — other
  • 280470 — Inorganic Chemicals — hydrogen, rare gases and other non-metals — phosphorus
  • 280480 — Inorganic Chemicals — hydrogen, rare gases and other non-metals — arsenic
  • 280490 — Inorganic Chemicals — hydrogen, rare gases and other non-metals — selenium

Frequently asked questions

The GST rate under 280421 depends on the specific item and applicable notifications. Check the classification with our HSN code finder and confirm the rate before invoicing.
Businesses with annual aggregate turnover of ₹5 crore or more must report at least 6 digits on e-invoices and e-way bills; below ₹5 crore, 4 digits is the B2B minimum. Exports require 8 digits.
Every line item on a GST tax invoice carries its HSN code alongside the description, quantity, taxable value, and tax breakup. The code also flows into your GSTR-1 HSN summary and e-way bills.

Related tools & guides

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