(hex' il een glye' kol).
» Hexylene Glycol is 2-methyl-2,4-pentanediol.
Packaging and storage Preserve in tight containers.
USP Reference standards 11
Identification, Infrared Absorption 197F , on undried specimen.
Specific gravity 841: between 0.917 and 0.923.
Refractive index 831: between 1.424 and 1.430.
Acidity Mix 1 mL of phenolphthalein TS with 50 mL of water, and add 0.1 N sodium hydroxide until the solution remains pink for 30 seconds. Add 10 mL of Hexylene Glycol, accurately measured, and titrate with 0.10 N sodium hydroxide until the original pink color returns and remains for 30 seconds: not more than 0.20 mL of 0.10 N sodium hydroxide is required.
Water, Method I 921: not more than 0.5%.
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USP35NF30 Page 1817