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In addition to o-cymene, there are two other geometric isomers called m-cymene, in which the alkyl groups are meta-substituted, and p-cymene, in which they are para-substituted. p-Cymene is the only isomer found in nature. The three isomers form the group of cymenes. Cymenes can be produced by alkylation of toluene with propylene. [1] [2]
In addition to p-cymene, two less common geometric isomers are o-cymene, in which the alkyl groups are ortho-substituted, and m-cymene, in which they are meta-substituted. p-Cymene is the only natural isomer, as expected from the terpene rule. All three isomers form the group of cymenes. Cymene is also produced by alkylation of toluene with ...
Cumyl alcohol, also called 4-isopropylbenzyl alcohol, is a liquid, hydroxy functional, aromatic organic chemical with formula C 10 H 14 O. It has the CAS Registry Number of 536-60-7 and the IUPAC name of (4-propan-2-ylphenyl)methanol. [2] [3] It is REACH registered with the EC number of 208-640-4. [4]
Substance Formula 0 °C 10 °C 20 °C 30 °C 40 °C 50 °C 60 °C 70 °C 80 °C 90 °C 100 °C Barium acetate: Ba(C 2 H 3 O 2) 2: 58.8: 62: 72: 75: 78.5: 77: 75
Carvacrol is present in the essential oil of Origanum vulgare (oregano), oil of thyme, oil obtained from pepperwort, and wild bergamot. [5] The essential oil of thyme subspecies contains between 5% and 75% of carvacrol, while Satureja (savory) subspecies have a content between 1% and 45%. [6]
The following chart shows the solubility of various ionic compounds in water at 1 atm pressure and room temperature (approx. 25 °C, 298.15 K). "Soluble" means the ionic compound doesn't precipitate, while "slightly soluble" and "insoluble" mean that a solid will precipitate; "slightly soluble" compounds like calcium sulfate may require heat to precipitate.
Hume-Rothery rules, named after William Hume-Rothery, are a set of basic rules that describe the conditions under which an element could dissolve in a metal, forming a solid solution. There are two sets of rules; one refers to substitutional solid solutions, and the other refers to interstitial solid solutions.
C 4 H 10 O 2: dimethoxyethane: 110-71-4 (CH 3) 2 NC(O)H: dimethylformamide: 68-12-2 C 2 H 8 N 2: 1,1-dimethylhydrazine: 57-14-7 C 2 H 8 N 2: 1,2-dimethylhydrazine: 540-73-8 (CH 3) 2 SO: dimethyl sulfoxide: 67-68-5 C 4 H 8 O 2: 1,4-Dioxane: 123-91-1 C 2 H 6 O: ethanol: 64-17-5 CH 3 CH 2 NH 2: ethylamine: 75-04-7 C 2 H 6 O 2: ethylene glycol: 107 ...