Urea is a high-purity laboratory reagent with CAS number 57-13-6 and empirical formula CH₄N₂O, supplied at a minimum assay of 99,5 % in p.a., BioScience-Grade quality. The compound has a molar mass of 60,06 g/mol and a density of 1,33 g/cm³, supporting accurate weighing, solution preparation and reproducible experimental work. It is widely used in biochemical and molecular-biology workflows, including protein denaturation, chaotropic buffer systems, nucleic-acid handling and general analytical chemistry. This from manufacturer Carl ROTH is suited to routine laboratory consumption where consistent purity and reliable handling are required. BioScience-Grade urea is frequently selected for life-science and quality-control applications that demand controlled reagent quality without unnecessary formulation complexity. Defined physical constants facilitate stock-solution preparation and protocol transfer across research, teaching and industrial laboratories. The material integrates smoothly into standard preparative and analytical procedures for organic and bioanalytical chemistry. This article is part of Biochemicals (other), in Biochemicals & reagents. Key features Appearance: fine, white crystals Assay: ≥99,5 % Chloride (Cl): ≤0.001 % Sulphate (SO4): ≤0.001 % Melting point: 132-135 °C Heavy metals (as Pb): ≤0.001 % UV absorption (8 M solution): 260 nm: ≤0.1 DNases (exo-and endonucleases): not detected Ribonucleases activity: not detected CAS number: 57-13-6 Pack sizes: 1 kg, 5 kg, 500 g, 2.5 kg EG nr.: 200-315-5 Purity: min. 99,5 %, p.a., BioScience-Grade Empirical formula: CH₄N₂O Molar mass: 60,06 g/mol Technical Information Sheet: Safety Data Sheet:
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