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Ethenone is a highly reactive gas (at standard conditions) and has a sharp irritating odour.It is only reasonably stable at low temperatures (−80 °C). It must therefore always be prepared for each use and processed immediately, otherwise a dimerization to diketene occurs or it reacts to polymers that are difficult to handle.
K b & K f [1] Chloroform: 1.48 61.2 3.88 –63.5 –4.90 K b & K f [1] Cyclohexane: 80.74 2.79 6.55 –20.2 Diethyl ether: 0.713 34.5 2.16 –193.58 –1.79 K b & K f [1] Methanol [4] 0.79 64.7 Ethanol: 0.78 78.4 1.22 –114.6 –1.99 K b [2] Ethylene bromide: 2.18 133 6.43 9.974 –12.5 K b & K f [1] Ethylene glycol: 1.11 197.3 2.26 −12.9 ...
Cyclohexanone is produced by the oxidation of cyclohexane in air, typically using cobalt catalysts: [11]. C 6 H 12 + O 2 → (CH 2) 5 CO + H 2 O. This process forms cyclohexanol as a by-product, and this mixture, called "KA Oil" for ketone-alcohol oil, is the main feedstock for the production of adipic acid.
The density is 882.73 kgm −1. The isothermal compressibility is 674 TPa −1 and isobaric expansivity is 819 K −1. [5] When bicyclohexyl is heated to around 427 °C (801 °F) it slowly decomposes to cyclohexane and cyclohexene, as the pivot bond joining the two rings is the longest and weakest one. [6] Heat of combustion is 1814.8 kcal/mol. [7]
Cyclohexenone is an organic compound which is a versatile intermediate used in the synthesis of a variety of chemical products such as pharmaceuticals and fragrances. [2] It is colorless liquid, but commercial samples are often yellow.
[1] It is produced industrially by the hydrogenation of cyclohexanone in the presence of hydrogen sulfide over a metal sulfide catalyst: C 6 H 10 O + H 2 S + H 2 → C 6 H 11 SH + H 2 O. It is also obtained by the addition of hydrogen sulfide to cyclohexene in the presence of nickel sulfide. [2]
1,3-Cyclohexanedione is an organic compound with the formula (CH 2) 4 (CO) 2. It is one of three isomeric cyclohexanediones . It is a colorless compound that occurs naturally.
Cyclohexylacetone along with N-methylformamide can be used to make racemic propylhexedrine in a similar fashion to the phenylacetone synthesis of methamphetamine. [1] Another cyclohexylacetone use is in the production of droprenilamine .