Urea 99% AR Grade Reagent
White square prismatic crystals or powder with the odor of ammonia. When the heating temperature is higher than its melting point, it is decomposed into biuret, ammonia and cyanuric acid. 1 g is dissolved in 1 ml of water, 10 ml of 95% ethanol, 1 ml of 95% boiling ethanol, 20 ml of anhydrous ethanol, 6 ml of methanol and 2 ml of glycerol. Soluble in concentrated hydrochloric acid, almost insoluble in ether and chloroform. The pH of the 10% aqueous solution is 7.2.
It is used in the analysis to test bismuth and tin. Determination of lead, calcium, copper, gallium, phosphorus, iodide and nitrate. When blood urea nitrogen is measured, a standard solution is used to measure serum bilirubin. Separation of hydrocarbons. Decomposes nitrogen oxides and nitrous acid. Prepare the medium. The stabilizer for the determination of uric acid by the Forint method is homogeneously precipitated.
Item of Analysis
Transparency of solution
Insoluble in water,%
Residue on ignition(as SO4) ,%
Heavy metals(as Pb),%
Not a hazardous substance or mixture.