Flexible Collodion
» Prepare Flexible Collodion as follows:
Camphor 20 g
Castor Oil 30 g
Collodion, a sufficient quantity, to make 1000 g
Weigh the ingredients, successively, into a dry, tared bottle, insert the stopper in the bottle, and shake the mixture until the camphor is dissolved.
Packaging and storage— Preserve in tight containers, at a temperature not exceeding 30, remote from fire.
Labeling— The label bears a caution statement to the effect that Flexible Collodion is highly flammable.
A: When exposed to air in a thin layer, it leaves a transparent, tenacious film. The film exhibits a distinct odor of camphor. The film of pyroxylin so obtained burns rapidly, with a yellow flame.
B: When mixed with an equal volume of water, it yields a viscid, stringy mass of pyroxylin.
Specific gravity 841: between 0.770 and 0.790.
Alcohol content— Proceed as directed in the test for Alcohol content under Collodion. The content of C2H5OH is between 21.0% and 25.0%.
Auxiliary Information— Please check for your question in the FAQs before contacting USP.
Topic/Question Contact Expert Committee
Monograph Rick G. Schnatz
Manager, Compounding Pharmacy Expert Committee
(CRX05) Compounding Pharmacy05
USP32–NF27 Page 2024