The molecular formula is C9H8O2, the structural short form is C6H5CH=CHCOOH, and the molar mass is 148.17g/mol.Melting point is 133°C, boiling point is 300°C, and the density is 1.245g/ml.
Cinnabaric acid is a colorless needle-like crystal or white crystalline powder. Odor slightly cinnamon aroma solubility soluble in ethanol, methanol, petroleum ether, chloroform, soluble in benzene, ether, acetone, glacial acetic acid, carbon disulfide and oil.
Cinnamic acid in food applications - cinnamaldehyde into the fruit preservative preferred
China is the world's leading producer of fruits, the total output of 120 million tons in 2010, from 1993, China's fruit production jumped to the world's first since, has been the world's top fruit producer for 18 years. Due to the perishability of fruit and its production of seasonal and regional, fruit preservation in our country more important preservation.
Efficient, low-toxic preservatives and their use of technology to promote and popularize the seasonal production of fruits, annual sales, harvest, ease the pressure of centralized listing, reduce decay and promote the circulation to lay a good foundation. China's fruit storage and transportation of preservatives used in the main polymyxin, thiabendazole, thiophanate-methyl, benomyl, myclobutanil, sec-butylamine, isobutyl urea, sulfur dioxide and other more than 20 kinds of preservatives.
But these preservatives are high price, residual toxicity or bad effect and other issues. So, there are black-hearted people against the national regulations, the use of apples, citrus, oranges and other fruits such as wax preservation. But this can prolong the preservation time, keep bright, but easy to cause "outside the good inside the rotten", because the paraffin is not breathable, easy to lead to inside the heat and harmful gases out of the formation of anaerobic decay and deterioration.
Refer to Baidu Encyclopedia - Cinnamic Acid