Quick lime Hs Code

Quick lime harmonized system code

Product Overview Quick lime, classified under HS Code 252210, is chemically identified as calcium oxide (CaO), produced through the calcination of high-purity limestone at temperatures exceeding 900°C. This inorganic chemical compound appears as a white to pale yellow, granular or powdered solid exhibiting high reactivity, particularly with water, to form calcium hydroxide. The product is typically processed to meet industrial-grade purity levels, often exceeding 90% CaO content, with controlled moisture and impurity thresholds to ensure consistent performance. The HS Code 252210 encompasses various subcategories including hydrated lime and other forms of calcium oxide derivatives, each differentiated by their moisture content and processing method. Quick lime serves critical roles across multiple sectors: it is extensively used in metallurgical processes for fluxing and slag formation, water treatment for pH adjustment and contaminant removal, construction for soil stabilization and cement manufacturing, and chemical industries for manufacturing calcium-based compounds. Its value proposition lies in its high reactivity, purity, and compliance with international quality standards, making it indispensable for importers and exporters focusing on industrial raw materials. HS Code Classification & Trade Specifications The HS Code 252210 is structured under Chapter 25 (Salt; Sulfur; Earths and Stone; Plastering Materials, Lime and Cement), with Heading 2522 specifically designating quick lime and related products. The six-digit code 252210 precisely identifies calcium oxide (quick lime), distinguishing it from other lime products such as slaked lime (252220). This classification is based on the product’s chemical composition and manufacturing process, adhering to the Harmonized System nomenclature maintained by the World Customs Organization (WCO). For international trade, quick lime is commonly packaged in moisture-resistant, multi-ply paper bags or bulk containers lined with polyethylene to prevent hydration and degradation during transit. Preservation methods emphasize moisture exclusion and airtight sealing to maintain product integrity. Shipping requirements comply with hazardous material regulations due to its reactive nature, often necessitating clear labeling and documentation. Quality standards for quick lime include ISO 9001 certification and adherence to ASTM C977 or equivalent, ensuring specified purity, particle size distribution (commonly 90% passing 75 microns), and minimal free moisture content (typically below 1.5%). These specifications facilitate accurate customs classification, streamline import/export procedures, and support compliance with WTO trade regulations.

Quick lime Chapter Note

1.- Except where their context or Note 4 to this Chapter otherwise requires, the headings of this Chapter cover only products which are in the crude state or which have been washed (even with chemical substances eliminating the impurities without changing the structure of the product), crushed, ground, powdered, levigated, sifted, screened, concentrated by flotation, magnetic separation or other mechanical or physical processes (except crystallisation), but not products which have been roasted, calcined, obtained by mixing or subjected to processing beyond that mentioned in each heading. The products of this Chapter may contain an added anti-dusting agent, provided that such addition does not render the product particularly suitable for specific use rather than for general use. 2.- This Chapter does not cover : (a) Sublimed sulphur, precipitated sulphur or colloidal sulphur (heading 28.02); (b) Earth colours containing 70 % or more by weight of combined iron evaluated as Fe2O3 (heading 28.21); (c) Medicaments or other products of Chapter 30; (d) Perfumery, cosmetic or toilet preparations (Chapter 33); (e) Dolomite ramming mix (heading 38.16); (f) Setts, curbstones or flagstones (heading 68.01); mosaic cubes or the like (heading 68.02); roofing, facing or damp course slates (heading 68.03); (g) Precious or semi-precious stones (heading 71.02 or 71.03); (h) Cultured crystals (other than optical elements) weighing not less than 2.5 g each, of sodium chloride or of magnesium oxide, of heading 38.24; optical elements of sodium chloride or of magnesium oxide (heading 90.01); (ij) Billiard chalks (heading 95.04); or (k) Writing or drawing chalks or tailors' chalks (heading 96.09). 3.- Any products classifiable in heading 25.17 and any other heading of the Chapter are to be classified in heading 25.17. 4.- Heading 25.30 applies, inter alia, to : vermiculite, perlite and chlorites, unexpanded; earth colours, whether or not calcined or mixed together; natural micaceous iron oxides; meerschaum (whether or not in polished pieces); amber; agglomerated meerschaum and agglomerated amber, in plates, rods, sticks or similar forms, not worked after moulding; jet; strontianite (whether or not calcined), other than strontium oxide; broken pieces of pottery, brick or concrete.