About HSN Code 2510
HSN Code 2510 covers Natural Calcium Phosphates, Natural Aluminium Calcium Phosphates and Phosphatic Chalk and attracts a GST rate of 5%. For intra-state supplies, this is split as 2.5% CGST + 2.5% SGST. For inter-state supplies, 5% IGST is charged. This code falls under the Chemicals & Materials sector (Paint, fertilizer, rubber, plastics, pharma).
How to Use HSN Code 2510 on GST Invoices
- Include the HSN code 2510 on every GST invoice for natural calcium phosphates, natural aluminium calcium phosphates and phosphatic chalk
- 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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Last verified: 2026-06-26 · Source: CBIC Master Tariff