N-Bromosuccinimide
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This article is compiled based on the United States Pharmacopeia (USP) – 2025 Edition
Issued and maintained by the United States Pharmacopeial Convention (USP)
C4H4BrNO2 177.98 CAS RN®: 128-08-5.-White to off-white crystals or powder. Freely soluble in water, in acetone, and in glacial acetic acid. [CAUTION-Highly irritating to eyes, skin, and mucous membranes.]
ASSAY: Transfer 200 mg, accurately weighed, to a conical flask, add 25 mL of 0.5 N alcoholic potassium hydroxide, cover with a watch glass, heat to boiling, and boil for 5 minutes. Cool, transfer the solution to a beaker, rinsing the flask with water until the total volume of solution plus rinsings is about 100 mL, and add 10 mL of glacial acetic acid. Insert suitable electrodes, and titrate with 0.1 N silver nitrate VS, determining the endpoint potentiometrically. Each mL of 0.1 N silver nitrate is equivalent to 17.80 mg of C4H4BrNO2. Not less than 98% is found.
