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questions :Benzoic acid
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[Member (365WT)]answers [Chinese ]Time :2019-01-26
Benzoic acid is a scaly or needle-like crystal having the odor of benzene or formaldehyde, and the chemical formula is C6H5COOH. The melting point of 122.13 ° C, the boiling point of 249 ° C, the relative density of 1.2659 (15 / 4 ° C). It rapidly sublimes at 100 ° C, its vapor is very irritating, and it is easy to cause cough after inhalation. Slightly soluble in water, soluble in organic solvents such as ethanol and ether. Benzoic acid is a weak acid and stronger than fatty acids. Their chemical properties are similar, and they all form salts, esters, acid halides, amides, acid anhydrides, etc., which are not easily oxidized. An electrophilic substitution reaction can occur on the benzene ring of benzoic acid, and a meta-substituted product is mainly obtained.


     Benzoic acid, benzoic acid, phenyl acid

     Chemical formula


     Molecular weight


     CAS registration number


     EINECS login number


     Melting point
122.13 ° C

     Boiling point

     249 ° C

     Water soluble

     Slightly soluble in water, soluble in ethanol, ether, etc.


     1.2659 (15/4 ° C)


     Scaly or needle crystal

     Flash point

     121 ° C ~ 123 ° C (closed cup)

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