About Chapter 25
Chapter 25 of the Harmonized System of Nomenclature (HSN) is titled “Salt, sulphur, earths and stone, plastering materials, lime and cement”. It is part of Section V, Mineral Products, together with Chapter 26 (ores, slag and ash) and Chapter 27 (mineral fuels).
The chapter is divided into 29 headings, from 2501 (salt and pure sodium chloride) to 2530 (mineral substances not elsewhere specified or included). The headings with the most codes that people search for are salt and pure sodium chloride (2501), quartz (2506), granite, porphyry, basalt, sandstone and other monumental or building stone (2516), pebbles, gravel, broken or crushed stone, of a kind commonly used for concrete aggregates (2517) and natural magnesium carbonate; fused magnesia (2519).
Note 1 limits most of the chapter to minerals in the crude state, or only washed, crushed, ground, powdered, sifted or concentrated by physical processes; products that have been roasted, calcined or mixed fall outside these headings unless the context or Note 4 says otherwise.
Every heading is listed below. Under each are the codes that have their own page on Laabam One, 10 codes in this chapter, each with its full classification: its chapter, heading and sub-heading, and the codes beside it.
Every code in this chapter begins with 25: four digits make a heading, six a sub-heading, and eight a tariff item of India's Customs Tariff. How many of those digits a GST tax invoice shows depends on the business, not the goods: under Notification No. 78/2020 – Central Tax, from 1 April 2021, four digits where aggregate turnover in the previous financial year was up to ₹5 crore, and six above it. Up to ₹5 crore, the code may be left off invoices to unregistered buyers.
No GST rate is shown here. GST rates were revised in September 2025, and a rate appears on this site only once it has been checked against the CBIC rate notifications.
Sources: ITC(HS) Chapter 25, DGCI&S (title, headings and notes); Notification No. 78/2020 – Central Tax (HSN digits on invoices).