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).
1 1. Solubilityï± There is no hydrogen bonding between two carbonyl groups. 2  6. 1. Solubilityï± Aldehydes and ketones can hydrogen bond with water. ï± 3  Aldehydes and ketones with five or fewer carbon atoms are fairly soluble in water. 6. 1. Solubilityï± Aldehydes and ketones can hydrogen bond with water. ï± 2  Aldehydes and ketones with five or fewer carbon atoms are fairly soluble in water. ï± 3  Large aldehydes and ketones dissolve only in nonpolar solvents.