CAS Number: 7553-56-2; 12190-71-5 Chinese Name: Refined Iodine English Name: Iodine Alias: Iodine flakes; Refined iodine; Iodine, standard solution Purity: 99.90% Molecular Formula: I? Molecular Weight: 253.81 EINECS Number: 231-442-4 Packaging: 50 kg/drum Specification: Appearance: Purple-black scaly or flaky crystals with metallic luster Purity: 99.90% Usage: Primarily used in the production of iodides for agriculture, feed additives, dyes, tincture of iodine, test papers, and chemical reagents. Also used for preparing standard solutions, determining iodine values, calibrating sodium thiosulfate solution concentrations. The solution can serve as a disinfectant and is used in photomechanical processes for preparing iodine agents and reducing solutions. Physical Properties: Appearance: Purple-black scaly or flaky crystals with metallic luster. Brittle, vapor appears purple. Has a distinctive pungent odor. Melting Point: 113.5°C Boiling Point: 184.35°C Relative Density: 4.93 (20/4°C) Solubility: Slightly soluble in water, solubility increases with temperature; poorly soluble in sulfuric acid; readily soluble in organic solvents; also soluble in chlorides and bromides; highly soluble in iodide solutions; can dissolve sulfur, selenium, ammonium and alkali metal iodides, as well as iodides of aluminum, tin, titanium, and other metals. Storage and Transportation: Store in a cool, ventilated, and dry warehouse. Protect against moisture.