Solvents
REACH
Methylcyclohexane
CAS Number
108-87-2
EC Number
203-624-3
Abbreviation
MCH
What is Methylcyclohexane?
Methylcyclohexane (CAS 108-87-2), also known commercially as MCH and toluene hexahydride, is a saturated alicyclic hydrocarbon solvent.
Where is Methylcyclohexane used?
- Non-polar solvent and process carrier where low water miscibility and controlled evaporation are required
- Catalyst research and chemical synthesis: hydrogen carrier
- Thermochemical energy storage: cyclical dehydrogenation to toluene enables hydrogen release on demand
- Personal care: solvent carrier in fragrance concentrates
- Aerosol delivery systems requiring clean evaporation profiles
- Flavor and fragrance manufacturing: extraction and dilution solvent for sensitive aroma compounds
- Industrial coatings and adhesives: hydrocarbon diluent where aromatic solvents must be avoided
- In catalyst and specialty synthesis applications it serves as a high-purity grade.
Good to know: Buyers should confirm purity thresholds and check residual aromatic content against process or regulatory requirements.
Commercial specifications
- High-purity grades available for catalyst and specialty synthesis applications
- Clear liquid in drums, IBCs and isotanks
Other Names (Synonyms)
Cyclohexane, methyl-|Toluene hexahydride|Sextone B|Toluene, hexahydro-|MCH|Cyclohexylmethane.
What are the physical properties of Methylcyclohexane?
Melting Point -126.6 °C
Boiling Point 100.9 °C @ Press: 760 Torr
Density 0.7694 g/cm³ @ Temp: 20 °C
Flash Point 25 °F
Appearance Methylcyclohexane, an alkene, is a colorless liquid with a faint benzene-like odor. The odor threshold is 630 ppm (this is above the OEL).
Color Colorless
Odor Faint, petroleum-like
Form Liquid
Water Solubility 0.1 g/L (20 ºC)
Vapor Pressure 37 mm Hg ( 20 °C)
Refractive Index n 20/D 1.422(lit.)
Log P 3.88
How is Methylcyclohexane classified and handled safely? Learn More
Danger
GHS02· Flammable GHS07· Irritant GHS08· Health Hazard GHS09· Environmental Hazard
Hazard Statements
H225 Highly Flammable liquid and vapor
H302 Harmful if swallowed
H304 May be fatal if swallowed and enters airways
H315 Causes skin irritation
Precautionary Statements
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P233 Keep container tightly closed.
P240 Ground and bond container and receiving equipment.
P241 Use explosion-proof [electrical/ventilating/lighting/…] equipment.
Which trade and regulatory codes apply to Methylcyclohexane?
HS Code 2902 19 00
UN Number 2296
ADR Class 3
Packing Group II
Storage Class 3 - Flammable liquids
WGK (Germany) 2