By chris Knutsen on Tuesday, April 11, 2000 - 09:59 am:
Does anyone have a method for the analysis of phenethyl alcohol and methylhydroxyglycinate in cosmetics. I do not care if they are LC, GC, or wet methods. Also, is there a good general book with suggested methods for the analysis of cosmetic compounds? You can reply to:
Chris Knutsen
Gibraltar Laboratories, Inc
122 Fairfield Road
Fairfield, NJ 07004
T: 973-227-6882 ext 529
F: 973-227-0812
e-mail: chris_knutsen@hotmail.com
Thank you in advance for your help.
By Anonymous on Thursday, April 13, 2000 - 08:09 am:
In my lab we assay for a very similar chemical, phenoxyethanol, using standard RP-18 columns with 65% acetonitrile and 35% water with 0.5% acetic acid with detector at 280 nm. This could also be done by GC on methyl silicone capillary column after dissolving in N,N-dimethylformamide and adding BSTFA to make trimethylsilyl derivative which is more stable and easier to quantitate than underivatized material.
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