Flexible Collodion
»Prepare Flexible Collodion as follows:
| Camphor | 20g |
| Castor Oil | 30g |
| Collodion,a sufficient quantity,to make | 1000g |
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.
,remote from fire.
Labeling—
The label bears a caution statement to the effect that Flexible Collodion is highly flammable.
Identification—
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 á841ñ:
between 0.770and 0.790.
Alcohol content—
Proceed as directed in the test for Alcohol contentunder Collodion.The content of C2H5OHis between 21.0%and 25.0%.
Auxiliary Information—
Staff Liaison:Lawrence Evans,III,Ph.D.,Scientist
Expert Committee:(PA6)Pharmaceutical Analysis 6
USP28–NF23Page 543
Phone Number:1-301-816-8389