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).
It melts at â80.8&degC; and boils at â84.0&degC;. Offensive odors often noted in commercial acetylene are due to impurities. Acetylene forms explosive mixtures with oxygen or air. It is soluble in acetone, ethanol, and water.cetylene is the simplest alkyne alkyne, any of a group of aliphatic hydrocarbons whose molecules contain one or more carbon-carbon triple bonds (see chemical bond). Alkynes with one triple bond have the general formula CnH2nâ2...... Click the link for more information.