Description Catalogue Number 101091 Synonyms Hydrargillite Product Information CAS number 21645-51-2 EC number 244-492-7 Hill Formula AlH₃O₃ Chemical formula Al(OH)₃ * x H₂O HS Code 2818 30 00 Applications Application Aluminium hydroxide powder pure, hydrargillite. CAS 21645-51-2, pH 8 - 9 (100 g/l, H₂O, 20 °C) (slurry). Physicochemical Information Density 2.42 g/cm3 (20 °C) Melting Point 300 °C Elimination of water of crystallisation pH value 8 - 9 (100 g/l, H₂O, 20 °C) (slurry) Vapor pressure <0.1 hPa (20 °C) Safety Information according to GHS RTECS BD0940000 Storage class 10 - 13 Other liquids and solids WGK NWG not water endangering Disposal 14 Inorganic salts: Container I. Neutral solutions of the these salts: Container D. Before placing in Container D, check the pH with pH-Universal indicator strips (Item No. 109535). Storage and Shipping Information Storage Store at +5°C to +30°C. Specifications Identity conforms Chloride (Cl) ≤ 0.01 % Sulphate (SO₄) ≤ 0.05 % Fe (Iron) ≤ 0.01 % Na (Sodium) ≤ 0.3 % Loss on ignition (700 °C) 30.0 - 35.0 % Bulk density about 90 Particle size (< 150 µm) about 90