About HSN Code 29121920

HSN Code 29121920 covers Heptaldehyde (heptanal) 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 29121920 on GST Invoices

• Include the HSN code 29121920 on every GST invoice for heptaldehyde (heptanal)
• 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 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

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 →