HSN Codes · Chapter 28: Inorganic Chemicals

HSN Code 281820

Aluminium oxide, other than artificial corundum

Typical GST rate

Varies

Depends on sub-classification

Type

Goods

HSN classification

Code level

6-digit

Sub-heading

Reading code 281820

The first two digits (28) place this code in chapter 28 — Inorganic Chemicals. Heading 2818 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

2818 — Artificial corundum, whether or not chemically defined; aluminium oxide; aluminium hydroxide

More specific codes under 281820

  • 28182010 — Artificial corundum, whether or not chemically defined; aluminium oxide; aluminium hydroxide - aluminium oxide, other than artificial corundum : alumina, calcined
  • 28182011 — Aluminium oxide, other than artificial corundum — metallurgical grade, conforming to IS 17441
  • 28182019 — Non- metallurgical grade, conforming to IS 17441
  • 28182090 — Aluminium oxide, other than artificial corundum — other

Related codes in heading 2818

  • 281810 — Artificial corundum, whether or not chemically defined
  • 281830 — Artificial corundum, whether or not chemically defined; aluminium oxide; aluminium hydroxide — aluminium hydroxide

Frequently asked questions

The GST rate under 281820 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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