Question
Posted on: March 6 2013Can you help us with next preparation? Ditranol 3% Salicylic acid 25% acetone 10% Collodion elasticum AD 50ml
The amount of salicylic acid is difficult soluble in collodion. Dithranol is little soluble in acetone. How best to solve everything in collodion?
Answer
Dissolve salicylic acid + 5cc alcohol, separately on in the half collodion (I)
dissolve dithranol in 7.5 ml of acetone and 7.5 ml of chloroform (II)
dissolve dithranol in 7.5 ml of acetone and 7.5 ml of chloroform (II)
add II to I and fill with collodion up to 50 ml