Packaging and storage—
Preserve in tight, well-filled, light-resistant containers, and avoid exposure to excessive heat.
Congealing temperature 
651
:
not lower than 18.0
. Congelation may be brought about by addition of a fragment of previously congealed Benzyl Benzoate when the temperature has reached the expected congealing temperature.
Aldehyde—
Transfer 10.0 g to a 125-mL conical flask containing 50 mL of alcohol and 5 mL of hydroxylamine hydrochloride solution (3.5 in 100), mix, and allow to stand for 10 minutes. Add 1 mL of
bromophenol blue TS, and titrate with 0.1 N sodium hydroxide VS to a light green endpoint. Perform a blank determination, and match the color of the endpoint with that of the titrated test solution. The net volume of 0.1 N sodium hydroxide consumed does not exceed 0.50 mL (0.05% as benzaldehyde).
Acidity—
Add 2 drops of phenolphthalein TS to 25 mL of alcohol, and add 0.020 N sodium hydroxide until a pink color is produced. Add 5.0 g of Benzyl Benzoate, mix, and titrate with 0.020 N sodium hydroxide: not more than 1.5 mL of 0.020 N sodium hydroxide is required to restore the pink color.
Organic volatile impurities, Method V 467:
meets the requirements.
Solvent—
Use dimethyl sulfoxide.
Assay—
Transfer about 2 g of Benzyl Benzoate, accurately weighed, to a conical flask fitted with a reflux condenser, add 50.0 mL of 0.5 N alcoholic potassium hydroxide VS, and boil gently for 1 hour. Cool, add
phenolphthalein TS, and titrate with 0.5 N hydrochloric acid VS. Perform a blank determination (see
Residual Titrations under
Titrimetry 541). Each mL of 0.5 N alcoholic potassium hydroxide is equivalent to 106.1 mg of C
14H
12O
2.
;)
