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Solvent Information
Observe the following recommendations on the use of solvents.
Flow Cells
Avoid the use of alkaline solutions (pH > 9.5) which can attack quartz and
thus impair the optical properties of flow cells.
Solvents
Always filter solvents, small particles can permanently block capillaries.
Avoid the use of the following steel- corrosive solvents:
• Solutions of alkali halides and their respective acids (for example,
• High concentrations of inorganic acids like nitric acid, sulfuric acid
• Halogenated solvents or mixtures which form radicals and/or acids, for
• Analysis- grade ethers, which can contain peroxides (for example, THF,
Agilent Cary 8454 UV-Visible Spectroscopy System Installation Guide
lithium iodide, potassium chloride, and so on).
especially at higher temperatures (replace, if your analysis method
allows, by phosphoric acid or phosphate buffer which are less corrosive
against stainless steel).
example:
→
2CHCl
+ O
2COCl
3
2
This reaction, in which stainless steel probably acts as a catalyst,
occurs quickly with dried chloroform if the drying process removes the
stabilizing alcohol.
dioxane, di- isopropylether) such ethers should be filtered through dry
aluminium oxide which adsorbs the peroxides.
+ 2HCl
2
Safety Information
Solvent Information
143
A
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