Gentian Violet Topical Solution
» Gentian Violet Topical Solution contains, in each 100 mL, not less than 0.95 g and not more than 1.05 g of gentian violet, calculated as hexamethylpararosaniline chloride (C25H30ClN3).
Packaging and storage— Preserve in tight containers.
Identification— A 1 in 5 dilution responds to Identification tests B and C under Gentian Violet.
Solution of residue in alcohol— Evaporate 10 mL on a steam bath to dryness: the residue dissolves completely in 10 mL of alcohol.
Alcohol content 611: between 8.0% and 10.0% of C2H5OH.
Assay— Pipet 25 mL of Topical Solution into a 300-mL conical flask, and proceed as directed in the Assay for Gentian Violet, beginning with “add 25 mL of water.”
Auxiliary Information— Please check for your question in the FAQs before contacting USP.
Topic/Question Contact Expert Committee
Monograph Behnam Davani, Ph.D., M.B.A.
Senior Scientific Liaison
(SM12010) Monographs - Small Molecules 1
USP35–NF30 Page 3333