Product Description
Urea has an ammonia smell and a salty taste. When heating temperature is higher than its melting point, it is decomposed into biuret, ammonia and cyanic acid. 1g soluble in 1mL water, 10ml 95%ethanol, 1ml 95%boiling ethanol, 20mL anhydrous ethanol, 6ml methanol and 2mL glycerol. Soluble in concentrated hydrochloric acid, almost insoluble in ether and chloroform. The pH of 10% aqueous solution is 7.23. Irritating.
Urea is used in analysis for antimony and tin. Determination of lead, calcium, copper, gallium, phosphorus, iodide and nitrate. Determination of blood urea nitrogen, with standard solution, determination of serum bilirubin. Separation of hydrocarbons. Nitric oxide and nitrous acid used to decompose nitrogen in the analysis. Prepare the medium. Folin method for the determination of uric acid stabilizer, homogeneous precipitation.