In this passage, the quotation is well-introduced. The author of the quotation is identified, as is the quotation's relation to the previous statement. From the introduction, the reader can detect the contrast between the quotation and the first sentence of the paragraph. Achieving Variety when Introducing Quotations.
(also cinnamic aldehyde, Î²-phenylacrolein), C 6 H 5 CH=CHCHO, a fatty-aromatic unsaturated aldehyde; a colorless liquid with the characteristic odor of cinnamon. It has a boiling point of 252Â°C and a density of 1.110 g/cm 3 (at 20Â°C). It is poorly soluble in water and very soluble in alcohol and ether. Cinnamaldehyde is a component of many essential oils (cinnamon oil and others).
Propanal=Yes.. up to 20g/100ml http://en.wikipedia.org/wiki/Propanal Cyclohexanone=Slightly soluble: http://en.wikipedia.org/wiki/Cyclohexanone Benzaldehyde=Yes but not much..0.6g/100ml http://en.wikipedia.org/wiki/Benzaldehyde Long Live Wikipedia.es, polarity does play a role but for these examples Whether or not something is soluble is down to how much the molecule would prefer to interact with water compared to itself. Keep in mind that the larger a molecule the stronger the van der waals forces between itself and other molecules.