Chapter 25 of the HSN Code

Chapter 25 of the HSN Code includes a wide range of materials essential for various industrial, construction, and manufacturing purposes. It begins with HSN Code 2501, which covers salts, including table salt, sodium chloride, and sea water. HSN Code 2502 refers to unroasted iron pyrites, a key material in sulfur production. HSN Code 2503 includes all types of sulfur, excluding sublimed, precipitated, or colloidal sulfur. HSN Code 2504 and HSN Code 2505 cover natural graphite and various types of sands, respectively, which are used in manufacturing and construction. HSN Code 2506 deals with quartz, an essential material in the production of glass and ceramics. HSN Code 2507 refers to kaolin and other kaolinic clays, used in ceramics, paper, and paints. HSN Code 2508 encompasses other clays, including andalusite, kyanite, and sillimanite, essential for high-temperature industries. HSN Code 2509 includes chalk, used primarily in lime and cement production. HSN Code 2510 covers natural calcium phosphates, used in fertilizers and agriculture. HSN Code 2511 focuses on natural barium compounds, such as barytes, important for the paint and drilling industries. HSN Code 2512 deals with siliceous fossil meals like kieselguhr and diatomite, used in filtration and as industrial absorbents. HSN Code 2513 includes pumice, emery, and other abrasives, essential for polishing and surface treatment. HSN Code 2514 refers to slate, used in roofing, tiles, and flooring. HSN Code 2515 covers marble, travertine, and other calcareous stones used in construction and monument making. HSN Code 2516 includes granite, porphyry, and basalt, also used for construction purposes. HSN Code 2517 deals with pebbles, gravel, and crushed stone, essential for concrete production and infrastructure projects. HSN Code 2518 refers to dolomite, crucial for cement and lime production. HSN Code 2519 covers natural magnesium carbonate (magnesite) and other magnesium compounds, used in industrial applications. HSN Code 2520 includes gypsum and anhydrite, which are essential for plaster and drywall production. HSN Code 2521 refers to limestone flux and other calcareous stones used in lime and cement manufacturing. HSN Code 2522 covers quicklime, slaked lime, and hydraulic lime, used in construction and industrial processes. HSN Code 2523 deals with cement, including cement clinkers, a fundamental building material. HSN Code 2524 includes asbestos (though now restricted), historically used in construction. HSN Code 2525 focuses on mica, used in electronics and cosmetics. HSN Code 2526 deals with natural steatite and talc, utilized in industrial products. HSN Code 2527 includes cryolite, a key material in aluminum production. HSN Code 2528 refers to borates, used in glass and ceramics manufacturing. HSN Code 2529 covers feldspar, leucite, nepheline, and fluorspar, important in the production of glass and ceramics. Finally, HSN Code 2530 includes vermiculite, perlite, and other mineral substances used in insulation and agriculture.