HSN code 2522 is the Customs Tariff heading for quicklime, slaked lime and hydraulic lime, other than calcium oxide and hydroxide of heading 2825, in Chapter 25 (Salt; sulphur; earths and stone; plastering materials, lime and cement). The GST rate is 5%: 2.5% CGST + 2.5% SGST within a state, or 5% IGST to another state. Rates are from 9/2025-Central Tax (Rate), as amended, as of 2026-10-21.
GST rate entries for HSN 2522
These are the entries of the current GST rate notifications whose column (2) names heading 2522 or one of its sub-headings or tariff items. The description is the notification's own wording; the goods must match it for the rate to apply.
| HSN scope | Description of goods (notification wording) | GST | Entry |
|---|---|---|---|
| 2522 | Quicklime, slaked lime and hydraulic lime, other than calcium oxide and hydroxide of heading 2825 | 5% | 9/2025-CT(R), Schedule I, S. No. 187 |
Goods of heading 2522 that do not match any description above fall under the residual entry, Schedule II S. No. 639 ("Goods which are not specified in Schedule I, III, IV, V, VI or VII"), at 18%, unless an "Any Chapter" entry or the nil-rated list of Notification 10/2025-Central Tax (Rate) covers them by description.
CGST, SGST and IGST split for HSN 2522
The rate notifications fix the central tax (CGST). State tax (SGST, or UTGST in a Union territory without a legislature) is levied at the same rate under the matching state notifications, and IGST on an inter-State supply equals the two together.
| Total GST | CGST | SGST / UTGST | IGST |
|---|---|---|---|
| 5% | 2.5% | 2.5% | 5% |
Worked example: a ₹1,000 sale under HSN 2522
- At 5%: taxable value ₹1,000.00. Within your state, CGST ₹25.00 + SGST ₹25.00 = ₹50.00, invoice total ₹1,050.00. To a buyer in another state, IGST ₹50.00, the same total.
For any other amount, the GST calculator gives the same split, and works backwards from a tax-inclusive price.
How to write HSN 2522 on an invoice
Notification 78/2020-Central Tax sets the number of HSN digits on a tax invoice by the aggregate turnover of the previous financial year. Up to ₹5 crore, print at least 4 digits (2522) on invoices to registered buyers; HSN may be left off invoices to unregistered buyers. Above ₹5 crore, print 6 digits on every tax invoice. Many sellers print the full 8-digit tariff item anyway, because it matches the shipping bill for exports and shows which entry you used.
Charge CGST and SGST when the buyer is in your state and IGST when the place of supply is another state. The invoice also needs your GSTIN, the buyer's GSTIN for B2B sales, the invoice number and date, the quantity, the taxable value and the tax at each rate. The HSN-wise summary in GSTR-1 is built from the same codes, so set the code once per item in your billing software. Make a one-off bill with the free GST invoice generator, or bill every day in FundRaksha Book, which stores the HSN and rate on each item and splits the tax for you.
Other headings in Chapter 25
Chapter 25 of the Customs Tariff is Salt; sulphur; earths and stone; plastering materials, lime and cement. This list has 29 of its headings, each with its own page. See all Chapter 25 headings.
- HSN 2501: Salt and pure sodium chloride (nil)
- HSN 2502: Unroasted iron pyrites (5%)
- HSN 2503: Sulphur of all kinds (5%)
- HSN 2504: Natural graphite (5%)
- HSN 2505: Natural sands of all kinds (5%)
- HSN 2506: Quartz (5%)
- HSN 2507: Kaolin and other kaolinic clays (5%)
- HSN 2508: Other clays, andalusite (5%)
- HSN 2509: Chalk (5%)
- HSN 2510: Natural calcium phosphates (5%)
- HSN 2511: Natural barium sulphate (5%)
- HSN 2512: Siliceous fossil meals (5%)