About HSN Code 28112950
HSN Code 28112950 covers Sulphur Trioxide (sulphuric Anhydride) 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. This code falls under the Chemicals & Materials sector (Paint, fertilizer, rubber, plastics, pharma).
How to Use HSN Code 28112950 on GST Invoices
- Include the HSN code 28112950 on every GST invoice for sulphur trioxide (sulphuric anhydride)
- 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
Related HSN Codes
- 28111100 — Hydrogen Fluoride (hydrofluoric Acid)
- 28111200 — Hydrogen cyanide (hydrocyanic acid)
- 28111910 — Other Inorganic Acids and Other Inorganic Oxygen Compounds of Non-metals - Other Inorganic Acids : - Other : Hydrocyanic Acid (hydrogen Cyanide, Prussic Acid)
- 28111920 — Hypophosphorus Acid (phosphinic Acid)
- 28111930 — Acids of Arsenic
Related Free Tools
- HSN/SAC Code Search — Search 22,000+ product and service codes
- GST Calculator — Calculate CGST, SGST, IGST split
- GSTIN Validator — Verify any GSTIN number
- GST Due Date Calendar — Never miss a filing deadline
- AI Bill Extractor — Extract invoice data with GL classification
1010 automatically suggests the correct HSN code when you create invoices, using AI to match your product descriptions to the CBIC master list of 22,000+ codes. Start your free trial →
Last verified: 2026-06-26 · Source: CBIC Master Tariff