2811 HSN Code: Inorganic acids

HSN Sub Chapter 2811 represents Inorganic acids under GST classification. This code helps businesses identify Inorganic acids correctly for billing, taxation, and trade. With HSN Sub Chapter 2811, companies can avoid errors in invoices, simplify compliance, and enable hassle-free import/export of Inorganic acids.

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Chapter No	HSN Code	HSN Description	New GST Rate	Old GST Rate
28	2811	Other inorganic acids and other inorganic oxygen compounds of non-metals	18%	18%

HSN Code 2811

Chapter: 28

Description: Other inorganic acids and other inorganic oxygen compounds of non-metals

New GST Rate: 18% Old GST Rate: 18%

Tariff HSN	Description
28111100	INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic acids : Hydrogen fluoride (hydrofluoric acid)
28111200	INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic acids : Hydrogen cyanide (hydrofluoric acid)
28111910	Other inorganic acids and other inorganic oxygen compounds of non-metals - other inorganic acids : - other : hydrocyanic acid (hydrogen cyanide, prussic acid)
28111920	INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic acids : Other : Hypophosphorus acid (phosphinic acid)
28111930	INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic acids : Other : Acids of arsenic
28111940	INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic acids : Other : Sulphonic acid
28111990	INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic acids : Other : Other
28112110	INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic oxygen compounds of non-metals : Carbon dioxide : Dry ice
28112190	INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic oxygen compounds of non-metals : Carbon dioxide : Other
28112200	INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic oxygen compounds of non-metals : Silicon dioxide
28112300	Other inorganic acids and other inorganic oxygen compounds of non-metals - other inorganic oxygen compounds of non-metals : sulphur dioxide
28112910	INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic oxygen compounds of non-metals : Other : Arsenic pentaoxide
28112920	INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic oxygen compounds of non-metals : Other : Arsenic trioxide
28112930	INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic oxygen compounds of non-metals : Other : Nitrous oxide
28112940	INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic oxygen compounds of non-metals : Other : Carbon monoxide
28112950	INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic oxygen compounds of non-metals : Other : Sulphur trioxide (sulphuric anhydride)
28112990	INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic oxygen compounds of non-metals : Other : Other

HSN Code 28111100

INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic acids : Hydrogen fluoride (hydrofluoric acid)

HSN Code 28111200

INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic acids : Hydrogen cyanide (hydrofluoric acid)

HSN Code 28111910

Other inorganic acids and other inorganic oxygen compounds of non-metals - other inorganic acids : - other : hydrocyanic acid (hydrogen cyanide, prussic acid)

HSN Code 28111920

INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic acids : Other : Hypophosphorus acid (phosphinic acid)

HSN Code 28111930

INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic acids : Other : Acids of arsenic

HSN Code 28111940

INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic acids : Other : Sulphonic acid

HSN Code 28111990

INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic acids : Other : Other

HSN Code 28112110

INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic oxygen compounds of non-metals : Carbon dioxide : Dry ice

HSN Code 28112190

INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic oxygen compounds of non-metals : Carbon dioxide : Other

HSN Code 28112200

INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic oxygen compounds of non-metals : Silicon dioxide

HSN Code 28112300

Other inorganic acids and other inorganic oxygen compounds of non-metals - other inorganic oxygen compounds of non-metals : sulphur dioxide

HSN Code 28112910

INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic oxygen compounds of non-metals : Other : Arsenic pentaoxide

HSN Code 28112920

INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic oxygen compounds of non-metals : Other : Arsenic trioxide

HSN Code 28112930

INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic oxygen compounds of non-metals : Other : Nitrous oxide

HSN Code 28112940

INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic oxygen compounds of non-metals : Other : Carbon monoxide

HSN Code 28112950

INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic oxygen compounds of non-metals : Other : Sulphur trioxide (sulphuric anhydride)

HSN Code 28112990

INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS : Other inorganic oxygen compounds of non-metals : Other : Other

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What products are classified under HSN 2811

It includes Inorganic acids

How do I bill a kit or combo that includes Inorganic acids?

Prefer separate lines per item with its HSN so each component follows its own tax treatment. If it is a naturally bundled supply, identify the principal supply and tax the whole bundle accordingly.

Do spares or accessories of Inorganic acids follow the same HSN?

Not always. Spares are often classified by their own description or by the function/part rule. Check if a specific sub‑heading exists for parts of the main item and describe the part on the invoice.

How are warranty replacements of Inorganic acids handled?

If replacement is without consideration under a pre‑agreed warranty, issue a delivery challan and reference the original invoice/contract. If consideration is charged, raise a tax invoice. Keep serial/lot details for traceability.

Does packaging or branding change how GST applies to Inorganic acids?

Yes. Many food/agri goods are treated differently when sold as pre‑packaged & labelled retail packs versus loose/open packs. If Inorganic acids is sold in small pouches (e.g., 500 g) with an MRP and label, record that on the invoice. Loose bulk bags often follow a different treatment.

Can I claim ITC on inputs and services used for Inorganic acids?

If your outward supply of Inorganic acids is taxable, ITC is generally available (Sections 16–17) except blocked credits (e.g., personal use, motor vehicles in most cases). For exempt supplies, proportionate reversal is required under Rule 42/43.

What misclassification mistakes happen with Inorganic acids?

Using a broad or incorrect HSN, ignoring material/form (e.g., raw vs processed), or mixing goods and services on one line. Always match wording to the HSN Notes and keep a classification working paper.

Important Disclaimer

The above does not constitute professional advice or a formal recommendation. We recommend consulting a professional tax consultant before acting on the information contained in this piece of content.

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