1.07179 Supelco


for spectroscopy Uvasol®

Synonym: Pentane

  • CAS Number 109-66-0

  • Linear Formula CH3(CH2)3CH3

  • Molecular Weight 72.15

  •  Beilstein/REAXYS Number 969132

  •  MDL number MFCD00009498

  •  EC Index Number 203-692-4



Quality Level   100
vapor density   2.48 (vs air)
assay   ≥99.5% (GC)
form   liquid
autoignition temp.   500 °F
potency   >2000 mg/kg LD50, oral (Rat)
expl. lim.   ~8.3 %
application(s)   UV/Vis spectroscopy: suitable
refractive index   n20/D 1.358 (lit.)
bp   35-36 °C (lit.)
mp   −130 °C (lit.)
transition temp   flash point -48 °C (refers to pure substance)
solubility   0.4 g/L
density   0.626 g/mL at 25 °C (lit.)
InChI   1S/C5H12/c1-3-5-4-2/h3-5H2,1-2H3
storage conditions   Store at +5°C to +30°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 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 solvents offer best UV transmittance. In all specifications the minimum transmittance for 5 typical wavelengths are identified. Furthermore the transmittance is specified in accordance with Reag. Ph Eur and ACS.

Analysis Note

Purity (GC): ≥ 99.5 %
Evaporation residue: ≤ 0.0002 %
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 200 nm): ≥ 50 %
Transmission (at 210 nm): ≥ 70 %
Transmission (at 215 nm): ≥ 85 %
Transmission (at 225 nm): ≥ 95 %
Transmission (from 240 nm): ≥ 98 %
Absorbance (at 200 nm): ≤ 0.30
Absorbance (at 210 nm): ≤ 0.16
Absorbance (at 215 nm): ≤ 0.07
Absorbance (at 225 nm): ≤ 0.02
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


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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