» Hexylene Glycol is 2-methyl-2,4-pentanediol.
Packaging and storage Preserve in tight containers.
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%.
Auxiliary Information Please check for your question in the FAQs before contacting USP.Chromatographic Column
USP32NF27 Page 1248
Chromatographic columns text is not derived from, and not part of, USP 32 or NF 27.