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Question

Posted on: March 6 2013

We have received a prescription with a composition like this mentioned in question 1081 but with addition of 10g lactic acid.

We prepared AVA + 10 g lactic acid and then the prescribed method. At the third step the CR è me. Do you have a solution?

Answer

The addition of 10g lactic acid apparently has a serious influence on the preparation. The chemical formula of bacitracin makes it clear that lactic acid is in the ability to react with this molecule, which is a carrier of a large number of basic groups with bacitracinlactate formation; I would not wonder that this substance possesses O/W emulsifier properties.