1.04366 Supelco


for spectroscopy Uvasol®

Synonym: Heptane

  • CAS Number 142-82-5

  • Linear Formula CH3(CH2)5CH3

  • Molecular Weight 100.20

  •  Beilstein/REAXYS Number 1730763

  •  MDL number MFCD00009544

  •  EC Index Number 205-563-8



Related Categories Solvent by Application, Solvents, Spectrophotometric Solvents, Spectroscopy Solvents (IR, NMR, UV/Vis)
Quality Level   100
vapor density   3.5 (vs air)
vapor pressure   40 mmHg ( 20 °C)
  83 mmHg ( 37.7 °C)
assay   ≥99.3% (GC)
form   liquid
autoignition temp.   433 °F
potency   >5000 mg/kg LD50, oral (Rat)
  >2000 mg/kg LD50, skin (Rabbit)
expl. lim.   7 %
application(s)   UV/Vis spectroscopy: suitable
refractive index   n20/D 1.387 (lit.)
bp   98 °C (lit.)
mp   −91 °C (lit.)
transition temp   flash point -4 °C
solubility   0.05 g/L
density   0.684 g/mL at 25 °C (lit.)
InChI   1S/C7H16/c1-3-5-7-6-4-2/h3-7H2,1-2H3
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): ≥ 99.3 %
Evaporation residue: ≤ 0.0002 %
Water: ≤ 0.005 %
Color: ≤ 10 Hazen
Acidity: ≤ 0.0001 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): ≥ 20 %
Transmission (at 210 nm): ≥ 55 %
Transmission (at 220 nm): ≥ 80 %
Transmission (at 228 nm): ≥ 90 %
Transmission (from 245 nm): ≥ 98 %
Absorbance (at 200 nm): ≤ 0.70
Absorbance (at 210 nm): ≤ 0.26
Absorbance (at 220 nm): ≤ 0.10
Absorbance (at 228 nm): ≤ 0.05
Absorbance (from 245 nm): ≤ 0.01

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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