p-Toluidine
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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)
C7H9N 107.15 CAS RN®: 106-49-0.-White to beige crystals or flakes.
Freely soluble in alcohol, in acetone, in methanol, and in dilute acids; slightly soluble in water.
ASSAY: Dissolve 400 mg, accurately weighed, in 100 mL of glacial acetic acid, and titrate with 0.1 N perchloric acid VS, determining the endpoint potentiometrically. Perform a blank determination, and make any necessary correction. Each mL of 0.1 N perchloric acid is equivalent to 10.72 mg of CH3C6H4NH2. Not less than 98%, calculated on the dried basis, is found.
LOSS ON DRYING: Weigh accurately about 1 g, and dry at 30° to constant weight: it loses not more than 2% of its weight.
