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Multiple Usages of Benzoic Acid

  • Author:Ray Dean
  • Source:www.oceanchinachem.com
  • Release on :2016-09-28

Benzoic acid is a scaly or needle-like crystal having an odor of benzene or formaldehyde. The temperature of 122.13 ° C, the boiling point of 249 ° C, the relative density of 1.2659 (15/4 ° C). At 100 when the rapid sublimation, its steam has a strong irritant, inhaled easily lead to cough. Slightly soluble in water, soluble in ethanol, ether and other organic solvents. Benzoic acid is a weak acid, stronger than fatty acids. Their chemical properties are similar, can form salts, esters, acid halide, amide, acid anhydride, are not easily oxidized. Benzoic acid benzene ring can occur electrophilic substitution reaction, the main meta-substituted products.

 

Benzoic acid can be used as food, feed, latex, toothpaste preservatives. In acidic conditions, mold, yeast and bacteria are inhibited, but the role of acid-producing bacteria is weak. Since benzoic acid is less soluble in water than sodium benzoate, care should be taken to prevent sodium benzoate from precipitating and reducing the use of sodium benzoate when using sodium benzoate in acidic foods. Benzoic acid in soy sauce, soft drinks can be used together with p-hydroxy benzoates and efficiency.

 

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