A-A-54175
7 June 1990
COMMERCIAL ITEM DESCRIPTION
COAL TAR GEL
The General Services Administration has authorized the use of this Commercial Item Description.
Salient characteristics.
Shall be Coal Tar Gel.
Shall be a tar gel of the following formulation:
Coal Tar Extract
* Absolute Ethyl Alcohol
Aqueous Gel Base (Base may contain surfactant solvent, emollients and thickening agents as necessary.)
* A suitable denatured ethyl alcohol may be used.
Shall assay to contain not less than 1.60 percent and not more than 2.05 percent of coal tar extract (0.275 percent to 0.600 percent coal tar), when determined by a suitable, accurate and reproducible method.
Shall assay to contain not less than 12.4 percent and not more than 15.1 percent of ethanol, when determined by a suitable, accurate and reproducible method.
Identification of coal tar in the finished product shall be performed by a suitable method.
The pH of the finished product shall be not less than 4.5 and not more than 6.0 when determined by the USP method.
The “coal tar extract” ingredient shall be a solution of coal tar in Polyoxyethylene-4-Lauryl Ether (Laureth-4). It shall assay to contain not less than 25.0 percent and not more than 40.0 percent coal tar, when determined by a suitable, accurate and reproducible method.
All ingredients used shall be of pharmaceutical grade.
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
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