1.06056 Supelco


for spectroscopy Uvasol®

Synonym: 2-Methylbutane, iso-Pentane, Isopentane

  • CAS Number 78-78-4

  • Empirical Formula (Hill Notation) C5H12

  • Molecular Weight 72.15

  •  MDL number MFCD00009338

  •  EC Index Number 201-142-8



Related Categories Solvent by Application, Solvents, Spectrophotometric Solvents, Spectroscopy Solvents (IR, NMR, UV/Vis)
Quality Level   100
vapor pressure   800 hPa ( 20 °C)
assay   ≥99.8% (GC)
form   liquid
autoignition temp.   420 °C
expl. lim.   1.3-7.6 % (v/v)
application(s)   UV/Vis spectroscopy: suitable
bp   28 °C/1013 hPa
mp   -160 °C
transition temp   flash point -57 °C
density   0.62 g/cm3 at 20 °C
InChI   1S/C5H12/c1-4-5(2)3/h5H,4H2,1-3H3
storage conditions   Store below +15°C.


General description

Accurate analytic results in UV/VIS and infrared spectroscopy depend on the use of very pure solvents for sample preparation. The Uvasol<TMSYMBOL></TMSYMBO<WBR>L> 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></TMSYMBO<WBR>L> solvents offer best UV transmittance. In all specifications the minimum transmittance for 5 typical wavelengths are identified.

Analysis Note

Purity (GC): ≥ 99.8 %
Evaporation residue: ≤ 0.0005 %
Water: ≤ 0.005 %
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 190 nm): ≥ 50 %
Transmission (at 200 nm): ≥ 65 %
Transmission (at 210 nm): ≥ 85 %
Transmission (at 215 nm): ≥ 90 %
Transmission (from 240 nm): ≥ 98 %
Absorbance (at 190 nm): ≤ 0.30
Absorbance (at 200 nm): ≤ 0.19
Absorbance (at 210 nm): ≤ 0.07
Absorbance (at 215 nm): ≤ 0.05
Absorbance (from 240 nm): ≤ 0.01
Meet the requirements of "Specific use spectroscopy" according Reag. Ph Eur

Legal Information

UVASOL is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety & Documentation

Safety Information

Protocols & Articles


Pressure-Temperature Calculator for Solvents

*Calculations provide estimated results based on Antoine's Coefficients and their associated temperature range values. Antoine's Coefficients were obtained from the National Institute of Standards an...

Solvents for Spectroscopy Uvasol®

Best Optical and Chemical Purity for Reliable Spectroscopy Results In spectroscopy applications, accurate analytic results depend on the use of very pure solvents for sample preparation. Uvasol® solv...
Keywords: Evaporation, Infrared spectroscopy, Purification, Sample preparations, Solvents, Spectroscopy

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