Edition: BP 2025 (Ph. Eur. 11.6 update)
Oily Cream
DEFINITION
Wool Alcohols Ointment 500 g
Phenoxyethanol 10 g
Dried Magnesium Sulfate 5 g
Purified Water, freshly boiled and cooled Sufficient to produce 1000 g
In preparing Hydrous Ointment the proportions of Hard Paraffin, Soft Paraffin and Liquid Paraffin used to make the Wool
Alcohols Ointment may be varied to produce Hydrous Ointment having suitable properties.
When Hydrous Ointment is used in a white ointment, it should be prepared from Wool Alcohols Ointment made with White
Soft Paraffin; when used in a coloured ointment, it should be prepared from Wool Alcohols Ointment made with Yellow Soft
Paraffin.
Extemporaneous preparation
The following directions apply.
Dissolve the Phenoxyethanol and the Dried Magnesium Sulfate in sufficient warm Purified Water to produce about 500 g.
Melt the Wool Alcohols Ointment and heat to about 60°; gradually add the aqueous solution at about 60° with vigorous
stirring until a smooth cream is obtained. Stir until cool, add sufficient Purified Water to produce 1000 g and mix.
The ointment complies with the requirements stated under Topical Semi-solid Preparations.
STORAGE
Hydrous Ointment should be kept in a container made from non-absorbent material. If, on storage, some aqueous liquid
separates, it is readily reincorporated by stirring.
