Tetrabutylammonium Phosphate
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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)
(C4H9)4NH2PO4 339.46 CAS RN®: 5574-97-0.-White to off-white powder. Soluble in water.
Assay: Dissolve about 1.5 g, accurately weighed, in 100 mL of water. Without delay, titrate with 0.5 N sodium hydroxide VS, determining the endpoint potentiometrically. Perform a blank determination, and make any necessary correction. Each mL of 0.5 N sodium hydroxide is equivalent to 169.7 mg of (C4H9)4NH2PO4. Not less than 97.0% is found.
