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| 配方类型： |
COSMETICS AND DRUGS |
| 配方说明： |
Modified whitefield's Ointment |
| 配方组成： |
Wool Fat/60
Castor Oil/250
Benzoic Acid/25
White Petroleum Jelly/125
White Wax/25
Salicylic Acid/15 |
| 配制方法： |
Heat the castor oil and wax together in a porcelain vessel over a vater bath. Add the acids and stir with a glass stirring rod until dissolved. Add the petroleum jelly and wool fat and stir until cold. The quantities of petroleum jelly and white wax may be varied slightly to suit atmospheric conditions and obtain an ointment of satisfactory consistency.
The ointment must be stirred until cold because castor oil and paraffin do not mix. If they are melted together and poured into a container to cool, they separate into two layers; but if they are stirred during the process of cooling, they will form a satisfactory ointment. |
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