Traditional Culture Encyclopedia - Traditional virtues - Why do you want to mix the drugs in two beakers separately when making cream?
Why do you want to mix the drugs in two beakers separately when making cream?
Because the dosage form of vanishing cream is emulsion. Emulsion refers to a heterogeneous dispersion system in which one liquid is dispersed in another immiscible liquid in tiny droplets. Cream is usually an oil-in-water emulsion system with stearic acid soap as emulsifier.
Because water and oil are immiscible. Therefore, firstly, the oil phase and the water phase should be mixed evenly, and then the water phase should be slowly added to the oil phase under intense stirring to form an oil-in-water emulsifier.
When "oil phase" and "water phase" are mixed, attention should be paid to stirring in one direction.
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