tert-Butyl methyl ether

Accurate analytic results in UV/VIS and infrared spectroscopy depend on the use of very pure solvents for sample preparation. The Uvasol<TMSYMBOL></TMSYMBOL> solvents range has been specially designed for spectroscopy and other applications requiring solvents of the highest spectral purity. The refinement process allows a greater degree of security in applications and avoids misinterpretation of analytical results caused by traces of UV, IR and fluorescence contamination. Uvasol<TMSYMBOL></TMSYMBOL> solvents offer best UV transmittance. In all specifications the minimum transmittance for 5 typical wavelengths are identified.

Purity (GC): ≥ 99.9 %
Evaporation residue: ≤ 0.0002 %
Water: ≤ 0.01 %
Colour: ≤ 10 Hazen
Acidity: ≤ 0.0002 meq/g
Alkalinity: ≤ 0.0002 meq/g
Fluorescence (as quinine at 254 nm): ≤ 1.0 ppb
Fluorescence (as quinine at 365 nm): ≤ 1.0 ppb
Transmission (at 215 nm): ≥ 40 %
Transmission (at 235 nm): ≥ 55 %
Transmission (at 240 nm): ≥ 60 %
Transmission (at 255 nm): ≥ 85 %
Transmission (at 260 nm): ≥ 90 %
Transmission (from 280 nm): ≥ 98 %
Absorbance (at 215 nm): ≤ 0.40
Absorbance (at 235 nm): ≤ 0.26
Absorbance (at 240 nm): ≤ 0.22
Absorbance (at 255 nm): ≤ 0.07
Absorbance (at 260 nm): ≤ 0.05
Absorbance (from 280 nm): ≤ 0.01
Meet the requirements of "Specific use spectroscopy" according ACS and Reag. Ph Eur

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