0.05 N Silver Nitrate 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)
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Dissolve 8.75 g of silver nitrate in 1000 mL of water.
Standardization
See Volumetric Solutions, 1. Introduction.
See Titrimetry 〈541〉.
Standardize by one of the following procedures. [Note—Other standardization procedures may be used. See Volumetric Solutions, 2. Preparation and Standardization, 2.3 Standardization.]
Standardization with visual endpoint: (USP 1-Aug-2023) Transfer about 50 mg, accurately weighed, of primary or volumetric standard sodium chloride, dried according to the label instructions or, if this information is not available, dried at 110° for 2 h, to a 150-mL beaker. Dissolve in 5 mL of water and add 5 mL of acetic acid, 50 mL of methanol, and about 0.5 mL of eosin Y TS. Stir, preferably with a magnetic stirrer, and titrate with the silver nitrate solution until the silver chloride occulates and the mixture acquires a faint pink color. (USP 1-Aug-2023)
N = mg NaCl / (mL AgNO3×58.44)
Standardization with potentiometric endpoint: Transfer about 50 mg, accurately weighed, of primary or volumetric standard sodium chloride, dried according to the label instructions or, if this information is not available, dried at 110° for 2 h, to a 150-mL beaker, dissolve in 50 mL of water, and add 5 mL of acetic acid. Stir, preferably with a magnetic stirrer, and titrate with the silver nitrate solution using a combined silver electrode.
N = mg NaCl / (mL AgNO3×58.44)
[Note—If this volumetric solution is used in a qualitative application such as pH adjustment, dissolution medium, or diluent, its standardization is not required.] (USP 1-Aug-2023)
