0.1 N Potassium Bromate VS
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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)
KBrO3, 167.00
2.784 g in 1000 mL
Dissolve 2.784 g of potassium bromate in water to make 1000 mL.
Standardization: Transfer an accurately measured volume of about 40 mL of the solution to a glass-stoppered flask, add 3 g of potassium jodide, and follow with 3 mL of hydrochloric acid. Allow to stand for 5 min, then titrate the liberated iodine with 0.1 N sodium thiosulfate VS, adding 3 mL of starch TS as the endpoint is approached. Correct for a blank run on the same quantities of the same reagents, and calculate the normality.
N = (ml Na2S2O3 x N Na2S2O3)/mL KBrO3 Solution
[NOTE-If this volumetric solution is used in a qualitative application such as pH adjustment, dissolution medium, or diluent, its standardization is not required.]
