About HSN Code 28111910

HSN Code 28111910 covers Other Inorganic Acids and Other Inorganic Oxygen Compounds of Non-metals - Other Inorganic Acids : - Other : Hydrocyanic Acid (hydrogen Cyanide, Prussic Acid) and attracts a GST rate of 18%. For intra-state supplies, this is split as 9% CGST + 9% SGST. For inter-state supplies, 18% IGST is charged.

How to Use HSN Code 28111910 on GST Invoices

• Include the HSN code 28111910 on every GST invoice for other inorganic acids and other inorganic oxygen compounds of non-metals - other inorganic acids : - other : hydrocyanic acid (hydrogen cyanide, prussic acid)
• Businesses with turnover above ₹5 crore must use 6-digit HSN codes
• Turnover between ₹1.5–5 crore: 4-digit codes are sufficient
• The HSN code must match the product/service description on your invoice
• Incorrect HSN codes can lead to GST notices and ITC mismatches

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