CAS Number: 497-19-8 Chinese Name: Anhydrous Sodium Carbonate English Name: Sodium Carbonate Aliases: Sodium carbonate; Soda; High-purity sodium carbonate; Sodium carbonate (heavy); Edible soda ash; Sodium carbonate (food grade); Anhydrous sodium carbonate; Heavy soda ash; Dense ash; Sodium carbonate (anhydrous); Sodium carbonate standard solution; Carbon oxygen; Light sodium carbonate Content: ≥99.8% Molecular Formula: Na?CO? Molecular Weight: 105.99 EINECS Number: 207-838-8 Packaging: 100 kg/bag Specification: | Indicator Name | Analytical Reagent | Chemical Pure | |------------------------------|--------------------|---------------| | Content (Na?CO?) /% | ≥99.8 | ≥99.8 | | Clarity Test | Qualified | Qualified | | Water Insolubles /% | ≤0.01 | ≤0.02 | | Loss on Drying /% | ≤1.0 | ≤1.0 | | Chlorides (Cl) /% | ≤0.002 | ≤0.005 | | Sulfur Compounds (as SO?) /% | ≤0.005 | ≤0.01 | | Nitrogen Compounds (as N) /% | ≤0.001 | ≤0.002 | | Phosphates and Silicates (as SiO?) /% | ≤0.006 | ≤0.013 | | Magnesium (Mg) /% | ≤0.002 | ≤0.005 | | Aluminum (Al) /% | ≤0.003 | ≤0.01 | | Potassium (K) /% | ≤0.005 | ≤0.02 | | Calcium (Ca) /% | ≤0.01 | ≤0.02 | | Iron (Fe) /% | ≤0.0005 | ≤0.001 | | Heavy Metals (as Pb) /% | ≤0.0005 | ≤0.001 | Usage: A fundamental chemical raw material widely used in pharmaceuticals, papermaking, metallurgy, glass, textiles, dyeing, and other industries. Also used as a leavening agent in the food industry. Physical Properties: Pure anhydrous sodium carbonate is a white powder or fine granules. Melting point: 851°C. Relative density: 2.532. Solubility: Easily soluble in water, forming a strongly alkaline solution. Maximum solubility occurs at 35.4°C, with 49.7 g of sodium carbonate soluble in 100 g of water (7.0 g at 0°C, 45.5 g at 100°C). Slightly soluble in anhydrous ethanol, insoluble in acetone. Storage and Transportation: Store sealed in a dry place.