Packaging and storage—
Preserve in tight containers, and prevent contact with metals.
Identification—
A:
It responds to Identification tests A and C under Benzalkonium Chloride.
B:
The residue obtained by evaporating, on a steam bath, a volume of Solution equivalent to about 200 mg of benzalkonium chloride responds to
Identification test
B under
Benzalkonium Chloride.
Microbial limits 
61
—
Solution containing less than 5.0% of benzalkonium chloride meets the requirements of the test for absence of
Pseudomonas aeruginosa.
Limit of foreign amines—
A volume of Solution, equivalent to 100 mg of benzalkonium chloride, and adjusted to a concentration of 1 in 50, meets the requirements of the test for
Foreign amines under
Benzalkonium Chloride.
Ratio of alkyl components—
Mobile phase, Standard preparation, Chromatographic system, and Procedure—
Proceed as directed in the test for
Ratio of alkyl components under
Benzalkonium Chloride.
Test preparation—
Transfer an accurately measured volume of Solution, equivalent to about 400 mg of benzalkonium chloride, to a 100-mL volumetric flask, dilute with water to volume, and mix.
Assay—
Evaporate or dilute with water to about 30 mL an accurately measured volume of Solution, equivalent to about 275 mg of benzalkonium chloride. Transfer the solution with the aid of a minimum quantity of water to a glass-stoppered, 250-mL conical separator. Add 25 mL of chloroform, and proceed as directed in the
Assay for total alkylbenzyldimethylammonium chlorides under
Benzalkonium Chloride, beginning with “Add 10.0 mL of freshly prepared potassium iodide solution (1 in 20).”
