Q3HSN Code 2818
Artificial corundum, whether or not chemically defined
Artificial corundum, whether or not chemically defined; aluminium oxide; aluminium hydroxide
GST rate
| Thorium oxalate, Enriched KBF4 (enriched potassium fluroborate), Enriched elemental boron, Nuclear fuel | 5% |
| Anaesthetics, Potassium Iodate, Iodine, Steam | 5% |
| Micronutrients, which are covered under serial number 1(g) of Schedule 1, Part (A) of the Fertilizer Control Order, 1985 and are manufactured by the manufacturers which are registered under the Fertilizer Control Order, 1985 | 5% |
| All inorganic chemicals [other than those specified in notification th No.10/2025- Central Tax (Rate) dated 17 September 2025 or other Schedules of this notification] | 18% |
Codes under 2818
| Code | Description | GST rate |
|---|---|---|
| 2818 10 | Artificial corundum, whether or not chemically defined | Varies |
| 2818 20 | Aluminium oxide, other than artificial corundum: | Varies |
| 2818 20 10 | Artificial corundum, whether or not chemically defined; aluminium oxide; aluminium hydroxide - aluminium oxide, other than artificial corundum: alumina, calcined | Varies |
| 2818 20 11 | Metallurgical grade, conforming to IS 17441 | Varies |
| 2818 20 19 | Non- metallurgical grade, conforming to IS 17441 | Varies |
| 2818 30 | Aluminium hydroxide | Varies |
Frequently Asked Questions
What is the HSN code for artificial corundum, whether or not chemically defined?
The HSN code for artificial corundum, whether or not chemically defined is 2818, under Chapter 28 (Industrial gases and inorganic chemicals).
What is the GST rate on artificial corundum, whether or not chemically defined?
It depends on the specific item: thorium oxalate, enriched kbf4 (enriched potassium fluroborate), enriched elemental boron, nuclear fuel is 5%; anaesthetics, potassium iodate, iodine, steam is 5%; micronutrients, which are covered under serial number 1(g) of schedule 1, part (a) of the fertilizer control order, 1985 and are manufactured by the manufacturers which are registered under the fertilizer control order, 1985 is 5%; all inorganic chemicals [other than those specified in notification th no.10/2025- central tax (rate) dated 17 september 2025 or other schedules of this notification] is 18%.
How many digits of the HSN code go on a GST invoice?
It depends on your turnover in the previous financial year: businesses above ₹5 crore generally show 6 digits (8 for certain specified goods), and smaller businesses show 4 digits on B2B invoices. Check the current e-invoicing/HSN notification for the exact threshold that applies to you.
Rates as per Notification No. 9/2025-Central Tax (Rate), as amended, as of 7 October 2026. For guidance only — verify with your tax advisor.