Hexylene Glycol
(hex' il een glye' kol).
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C6H14O2 118.17

2,4-Pentanediol, 2-methyl-, (±)-.
(±)-2-Methyl-2,4-pentanediol [107-41-5].
» Hexylene Glycol is 2-methyl-2,4-pentanediol.
Packaging and storage— Preserve in tight containers.
USP Reference standards 11
USP Hexylene Glycol RS Click to View Structure
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%.
Auxiliary Information— Please check for your question in the FAQs before contacting USP.
Topic/Question Contact Expert Committee
Monograph Robert H. Lafaver, M.S.
Scientific Liaison
(EXC2010) Monographs - Excipients
Reference Standards RS Technical Services
USP35–NF30 Page 1817