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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.

     nickname

     Benzoic acid, benzoic acid, phenyl acid

     Chemical formula

     C6H5COOH

     Molecular weight

     122.1214

     CAS registration number

     65-85-0

     EINECS login number

     200-618-2

     Melting point
122.13 ° C

     Boiling point

     249 ° C

     Water soluble

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

     density

     1.2659 (15/4 ° C)

     Exterior

     Scaly or needle crystal

     Flash point

     121 ° C ~ 123 ° C (closed cup)
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