Description Catalogue Number 818710 Synonyms Carbamide, Carbonyl diamide, Diaminomethanone, Carbonyldiamine Product Information CAS number 57-13-6 EC number 200-315-5 Hill Formula CH₄N₂O Chemical formula CO(NH₂)₂ Molar Mass 60.06 g/mol HS Code 3105 10 00 Structure formula Image Applications Application Urea for synthesis. CAS No. 57-13-6, EC Number 200-315-5. Physicochemical Information Density 1.34 g/cm3 (20 °C) Melting Point 133 °C pH value 9 (100 g/l, H₂O, 20 °C) Vapor pressure <0.1 hPa (20 °C) Bulk density 720 - 760 kg/m3 Solubility 1000 g/l Toxicological Information LD 50 oral LD50 Rat 8471 mg/kg LD 50 dermal LD50 Rat 8200 mg/kg Safety Information according to GHS RTECS YR6250000 Storage class 10 - 13 Other liquids and solids WGK WGK 1 slightly water endangering Disposal 3 Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C. Storage and Shipping Information Storage Store below +30°C. Specifications Assay (ex N) ≥ 99.0 % Melting range (lower value) ≥ 132 °C Melting range (upper value) ≤ 135 °C Identity (IR) passes test