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Critical point. 554 K (281 °C), 4070 kPa. Std enthalpy change of fusion, Δ fusH o. 2.68 kJ/mol crystal I → liquid. Std entropy change of fusion, Δ fusS o. 9.57 J/ (mol·K) crystal I → liquid. Std enthalpy change of vaporization, Δ vapH o. 32 kJ/mol. Std entropy change of vaporization, Δ vapS o.
1,2-Diaminocyclohexane (DACH) is an organic compound with the formula (CH 2) 4 (CHNH 2) 2. It is a mixture of three stereoisomers: cis -1,2-diaminocyclohexane and both enantiomers of trans -1,2-diaminocyclohexane. The mixture is a colorless, corrosive liquid, although older samples can appear yellow. It is often called DCH-99 and also DACH.
The cyclohexanone–cyclohexanol mixture, called " KA oil ", is a raw material for adipic acid and caprolactam, precursors to nylon. Several million kilograms of cyclohexanone and cyclohexanol are produced annually. [8] It is used as a solvent in some brands of correction fluid. Cyclohexane is sometimes used as a non-polar organic solvent ...
Structural isomer. In chemistry, a structural isomer (or constitutional isomer in the IUPAC nomenclature [ 1 ]) of a compound is another compound whose molecule has the same number of atoms of each element, but with logically distinct bonds between them. [ 2 ][ 3 ] The term metamer was formerly used for the same concept. [ 4 ]
In organic chemistry, a hydrate is a compound formed by the hydration, i.e. "Addition of water or of the elements of water (i.e. H and OH) to a molecular entity". [5] For example: ethanol, CH3−CH2−OH, is the product of the hydration reaction of ethene, CH2=CH2, formed by the addition of H to one C and OH to the other C, and so can be ...
trans -but-2-ene. Cis–trans isomerism, also known as geometric isomerism, describes certain arrangements of atoms within molecules. The prefixes " cis " and " trans " are from Latin: "this side of" and "the other side of", respectively. [ 1 ] In the context of chemistry, cis indicates that the functional groups (substituents) are on the same ...
Methylcyclohexane(cyclohexylmethane) is an organic compoundwith the molecular formula is CH3C6H11. Classified as saturated hydrocarbon, it is a colourless liquidwith a faint odor. Methylcyclohexane is used as a solvent. It is mainly converted in naphtha reformersto toluene.[4]
The refractive index of liquid water (1.333 at 20 °C (68 °F)) is much higher than that of air (1.0), similar to those of alkanes and ethanol, but lower than those of glycerol (1.473), benzene (1.501), carbon disulfide (1.627), and common types of glass (1.4 to 1.6). The refraction index of ice (1.31) is lower than that of liquid water.