Urea, compd. with hydrogen peroxide (1:1).
Urea compound with hydrogen peroxide (1:1) [124-43-6].
» Carbamide Peroxide contains not less than 96.0 percent and not more than 102.0 percent of CH6N2O3.
Packaging and storage Preserve in tight, light-resistant containers, and avoid exposure to excessive heat.
A: Mix 1 mL of a solution (1 in 10) of it with 1 mL of nitric acid: a white, crystalline precipitate is formed.
B: A solution of it (1 in 10) responds to the tests for Peroxide 191.
Assay Transfer about 100 mg of Carbamide Peroxide, accurately weighed, to a 500-mL iodine flask with the aid of 25 mL of water, add 5 mL of glacial acetic acid, and mix. Add 2 g of potassium iodide and 1 drop of ammonium molybdate TS, insert the stopper, and allow to stand in the dark for 10 minutes. Titrate the liberated iodine with 0.1 N sodium thiosulfate VS, adding 3 mL of starch TS as the endpoint is approached. Each mL of 0.1 N sodium thiosulfate is equivalent to 4.704 mg of CH6N2O3.
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USP32NF27 Page 1788
Chromatographic columns text is not derived from, and not part of, USP 32 or NF 27.