Q3HSN Code 2811
Other inorganic acids and other inorganic oxygen compounds
Other inorganic acids and other inorganic oxygen compounds of non-metals
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 2811
| Code | Description | GST rate |
|---|---|---|
| 2811 11 | Hydrogen fluoride (hydrofluoric acid) | Varies |
| 2811 12 | Hydrogen cyanide (hydrocyanic acid ) | Varies |
| 2811 12 00 | Hydrogen cyanide (hydrocyanic acid) | Varies |
| 2811 19 | Other inorganic acids and other inorganic oxygen compounds of non-metals › Other | Varies |
| 2811 19 10 | Other inorganic acids and other inorganic oxygen compounds of non-metals - other inorganic acids: - other: hydrocyanic acid (hydrogen cyanide, prussic acid) — inorganic chemicals, organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes | Varies |
| 2811 19 20 | Hypophosphorus acid (phosphinic acid) | Varies |
| 2811 19 30 | Acids of arsenic | Varies |
| 2811 19 40 | Sulphonic acid | Varies |
| 2811 21 | Carbon dioxide: | Varies |
| 2811 21 10 | Dry ice | Varies |
| 2811 22 | Silicon dioxide | Varies |
| 2811 23 00 | Other inorganic acids and other inorganic oxygen compounds of non-metals - other inorganic oxygen compounds of non-metals: sulphur dioxide — inorganic chemicals, organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes | Varies |
| 2811 29 | Other inorganic acids and other inorganic oxygen compounds of non-metals › Other | Varies |
| 2811 29 10 | Arsenic pentaoxide | Varies |
| 2811 29 20 | Arsenic trioxide | Varies |
| 2811 29 30 | Nitrous oxide | Varies |
| 2811 29 40 | Carbon monoxide | Varies |
| 2811 29 50 | Sulphur trioxide (sulphuric anhydride) | Varies |
← Chapter 28: Industrial gases and inorganic chemicals
Related HSN codes
Frequently Asked Questions
What is the HSN code for other inorganic acids and other inorganic oxygen compounds?
The HSN code for other inorganic acids and other inorganic oxygen compounds is 2811, under Chapter 28 (Industrial gases and inorganic chemicals).
What is the GST rate on other inorganic acids and other inorganic oxygen compounds?
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.