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Zinc Oxide Paste
» Zinc Oxide Paste contains not less than 24.0 percent and not more than 26.0 percent of ZnO.
It may be prepared as follows:
Zinc Oxide 250 g
Starch 250 g
White Petrolatum 500 g
To make 1000 g
Mix the ingredients.
Packaging and storage— Preserve in well-closed containers, and avoid prolonged exposure to temperatures exceeding 30.
Identification— The residue obtained in the Assay is yellow when hot and white when cool.
Minimum fill 755: meets the requirements.
Residual solvents 467: meets the requirements.
(Official January 1, 2007)
Assay— Using about 600 mg of Paste, proceed as directed in the Assay under Zinc Oxide Ointment.
Auxiliary Information— Staff Liaison : Feiwen Mao, M.S., Senior Scientific Associate
Expert Committee : (MDOOD05) Monograph Development-Ophthalmics Oncologics and Dermatologicals
USP29–NF24 Page 2291
Phone Number : 1-301-816-8320