Compound Benzoin Tincture
» Prepare Compound Benzoin Tincture as follows.
Prepare a Tincture by Process M (see Pharmaceutical Dosage Forms 1151), using alcohol as the menstruum.
Packaging and storage
Preserve in tight, light-resistant containers, and avoid exposure to direct sunlight and to excessive heat.
Labeling
Label it to indicate that it is flammable.
Specific gravity 841:
between 0.870 and 0.885.
Limit of nonvolatile residue
Evaporate 3 mL of Tincture in a suitable tared dish on a steam bath, and dry the residue at 100 for 2 hours: the weight of the residue is between 525 mg and 675 mg.
Alcohol content, Method II 611:
between 74.0% and 80.0% of C2H5OH, the dilution to approximately 2% alcohol being made with methanol instead of with water.
Auxiliary Information
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USP32NF27 Page 1647
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