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Most methylcyclohexane is extracted from petroleum but it can be also produced by catalytic hydrogenation of toluene: CH 3 C 6 H 5 + 3 H 2 → CH 3 C 6 H 11. The hydrocarbon is a minor component of automobile fuel, with its share in US gasoline varying between 0.3 and 1.7% in early 1990s [10] and 0.1 to 1% in 2011. [11]
Cyclohexanol is produced by the oxidation of cyclohexane in air, typically using cobalt catalysts: [5]. 2 C 6 H 12 + O 2 → 2 C 6 H 11 OH. This process coforms cyclohexanone, and this mixture ("KA oil" for ketone-alcohol oil) is the main feedstock for the production of adipic acid.
It has been patented for use in air fresheners. [8]U.S. Patent 4915825 describes a froth flotation process for cleaning coal where a mixture of 95% MCHM, 4% water, and 0.1% 4-methylcyclohexanemethanol monoether (such as 4-(methoxymethyl)cyclohexanemethanol) is used as a frothing agent, and finely divided coal particles adhere to air bubbles induced into the agent which rise to the surface.
[1] [2] [3] It can also be synthesized as a side product of the dehydration of 2-methylcyclohexanol into 1-methylcyclohexene. Structure
Hydration reaction mechanism from 1-methylcyclohexene to 1-methylcyclohexanol. Many alternative routes are available for producing alcohols, including the hydroboration–oxidation reaction , the oxymercuration–reduction reaction , the Mukaiyama hydration , the reduction of ketones and aldehydes and as a biological method fermentation .
114,19 g·mol −1 Appearance colorless liquid with a smell of alcohol [1] Density: 0,9339 g·cm −3 [2] Melting point: 19 °C (66 °F) [1] ... Hazards Flash point:
Professor David Todd at Pomona College was testing the dehydration of 2-methylcyclohexanol or 4-methylcyclohexanol c. 1994 and unexpectedly interrupted the alkene distillation midway to have lunch with his secretary, Evelyn Jacoby. After lunch, he continued his distillation but kept the early products separate from the completed ones.
hazard statements, indicating the nature and degree of the risks posed by the product the identity of the supplier (who might be a manufacturer or importer) Each precautionary statement is designated a code, starting with the letter P and followed by three digits.