Cyclohexanone appears as a colorless to pale yellow liquid with a pleasant odor. Less dense than water. Flash point 111 °F. Vapors heavier than air. Used to make nylon, as a chemical reaction medium, and as a solvent.
Chemical Formula: C6H10O
Flash Point: 111°F (NTP, 1992)
Lower Explosive Limit (LEL): 1.2 % (NTP, 1992)
Upper Explosive Limit (UEL): 8.1 % (NTP, 1992)
Autoignition Temperature: 788°F (USCG, 1999)
Melting Point: 3°F (NTP, 1992)
Vapor Pressure: 5.2 mmHg at 77°F ; 10 mmHg at 101.7°F (NTP, 1992)
Vapor Density (Relative to Air): 3.4 (NTP, 1992) – Heavier than air; will sink
Specific Gravity: 0.945 at 68°F (USCG, 1999) – Less dense than water; will float
Boiling Point: 312.1°F at 760 mmHg (NTP, 1992)
Molecular Weight: 98.16 (NTP, 1992)
Water Solubility: 50 to 100 mg/mL at 64°F (NTP, 1992)
Ionization Energy/Potential: 9.14 eV (NIOSH, 2024)
IDLH: 700 ppm (NIOSH, 2024)
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