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n-Heptane

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

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Properties

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.)
SMILES string   CCCCCCC
InChI   1S/C7H16/c1-3-5-7-6-4-2/h3-7H2,1-2H3
InChI key   IMNFDUFMRHMDMM-UHFFFAOYSA-N
storage conditions   Store at +5°C to +30°C.

Description

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

Articles

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Solvents for Spectroscopy Uvasol®

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Keywords: Evaporation, Infrared spectroscopy, Purification, Sample preparations, Solvents, Spectroscopy

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