Urea, with the CAS number 57-13-6, is a chemical compound commonly known as carbonyldiamide or carbamide. It is also referred to by various other names such as Basodexan, Harnstoff, Hyanit, Keratinamin, Nutraplus, Ureaphil, and Urepearl. The chemical formula of urea is CHâ‚„Nâ‚‚O, and its molecular weight is approximately 60.06 g/mol. This product is available in AR (Analytical Reagent) grade, ensuring high purity with a minimum content of 99.0%.
The impurities are strictly controlled: chloride content is no more than 0.0003%, sulfate is below 0.001%, and the clarity test result does not exceed No. 2. The ignition residue, calculated as sulfate, is limited to 0.1%, while ammonia content remains under 0.005%. Water-insoluble substances are kept below 0.005%, and heavy metals, expressed as lead, are restricted to 0.0002%. Iron content is also maintained at less than 0.0002%, and biuret content does not exceed 0.2%.
Urea appears as white square prismatic crystals or a fine powder. It has a distinct ammonia-like odor and a slightly salty taste. When heated above its melting point, it decomposes into biuret, ammonia, and cyanuric acid.
It dissolves easily in water, with 1 gram dissolving in 1 mL of water, 10 mL of 95% ethanol, 1 mL of boiling 95% ethanol, 20 mL of absolute ethanol, 6 mL of methanol, and 2 mL of glycerol. However, it is only slightly soluble in concentrated solutions and almost completely insoluble in ether and chloroform. The pH of a 10% aqueous solution is around 7.2. The relative density of the aqueous solution (W/W, d) is also an important parameter for quality control.
This compound is widely used in agriculture as a fertilizer, in cosmetics for skin hydration, and in industrial applications due to its versatile properties. Its high solubility and stability make it a key ingredient in many formulations. Proper storage conditions should be maintained to ensure its long-term usability and effectiveness.
Professional Hair Clipper,Professional Clippers,Professional Hair Trimmer,Professional Trimmer For Men
Zhejiang Hisun Electrical Appliance Co.,Ltd , https://www.cn-hisun.com