Cyclohexane for HPLC Chromatography

Chemical name: Cyclohexane

Synonyms: Hexahydrobenzene, Hexamethylene, Hexanaphthene, Hexomethylene

Chemical formula: _C6H12

Molar mass: 84.16 g/mol

CAS number: 110-82-7

EC number (EINECS): 203-806-2

Catalog number: CHEM*612564208

Hazard identification

• H-phrases: H225 - Highly flammable liquid and vapor; H304 - May be fatal if swallowed and enters airways; H315 - Causes skin irritation; H336 - May cause drowsiness or dizziness; H410 - Very toxic to aquatic life with long lasting effects
• P-phrases: P210, P240, P273, P301+P310+P331, P403+P235

Physical and chemical properties

• Form: liquid
• Color: colorless
• Odor: characteristic
• Melting point: 6.5°C
• Boiling point: 80.7°C
• Autoignition temperature: 260°C
• Flash point: -18°C
• Explosion limits: 1.2% - 8.3% vol.
• Viscosity (20°C): 0.98 mPa·s
• Vapor pressure (20°C): 104 mbar
• Density (20°C): 0.78 g/cm³
• Solubility in water: 0.01% w/w (20°C)
• Solubility in organic solvents: Ethyl alcohol, diethyl ether, acetone, benzene, carbon tetrachloride
• Log P (n-octanol/water): 7

Purity and HPLC quality data

• Content: min. 99.5%
• Water (KF): max. 0.01%
• Acid value: max. 0.0005 meq/g
• Non-volatile residues: max. 0.0005%
• UV - Transmission (1 cm, water):
  • 210 nm: min. 60.0%
  • 220 nm: min. 80.0%
  • 230 nm: min. 95.0%
  • 240 nm: min. 98.0%
  • 250 nm: min. 99.0%
• Fluorescence (cf. quinine):
  • 254 nm: max. 1 ppb
  • 365 nm: max. 1 ppb

Transport information

• RID/ADR: 3, II
• UN: 1145

Remarks

Cyclohexane for HPLC chromatography is a high-purity solvent for trace analysis, especially in HPLC techniques and in UV and fluorescence spectrophotometry. With minimal impurities and low fluorescence, it is used in analytical laboratories, environmental research, and quality control. The product should be stored in a cool, dry place away from ignition sources.