Suggested Applications: HPLC, GC, Pesticide residue analysis, Spectrophotometry
Synonyms: n-Heptane, Heptanes
Structural Formula: CH3(CH2)5CH3
CAS number: 142-82-5
Hazard Class: 3
Package Group: II
UN number: UN1206
Specifications
Electron Capture GC: 2 µg/L max.
GC Analysis (n-Heptane): 99.0% min.
GC Analysis (toal C7 isomers): 99.9% min.
Refractive Index (20°C): 1.3872 - 1.3884
Residue: 1 mg/L max.
UV Absorbance @ 225 nm: 0.100 AU max.
UV Absorbance @ 250 nm: 0.010 AU max.
UV Absorbance @ 300 nm: 0.005 AU max.
UV Absorbance @ 400 nm: 0.005 AU max.
Water by Karl Fischer Titration: 0.01% max.
Surface Tension (dyn/cm) at 20°C: 20.3
Vapor Pressure (Torr) at 20°C: 35.5
Physical Properties
Density (g/mL) at 20°C: 0.6837
Molecular Weight: 100.21
Boiling Point (°C): 98.4
Freezing Point (°C): -90.6
Flashpoint (°C): -4
Elutropic Value, Silica: 0.01
Polarity Index, P': 0.1
Solubility in Water (%) at 20°C: 0.0003
Surface Tension (dyn/cm) at 20°C: 20.3
UV Cutoff (nm): 200
UV Cutoff: 200 nm max.
Viscosity (cP) at 20°C: 0.42