Silicone as a trace contaminant in laboratory solvents.
This paper examines a suite of lipid solvents for their utility as solvents for silicone analysis by Raman spectroscopy, and discusses the observation that off-the-shelf reagents could be contaminated by silicone during manufacture. Of the solvents examined, only chloroform was transparent in those spectral regions (chiefly 500 cm-1) in which silicone exhibits its Raman spectrum. Also, the chloroform examined showed evidence of silicone contamination. Therefore, chloroform is suggested as a suitable solvent for Raman spectroscopic work involving silicone, if one is careful to confirm that the chosen chloroform is not contaminated by silicone.
Pellenbarg
R E
RE
Chemistry Division, Naval Research Laboratory, Washington, DC 20375-5000.
Tevault
D E
DE
D004340:Drug Contamination; D007202:Indicators and Reagents; D007753:Laboratories; D012828:Silicones / Q000032:analysis*; D012997:Solvents
D007202:Indicators and Reagents; D012828:Silicones; D012997:Solvents