Uses
1 . Formic acid is used in leather tanning , textile dyeing and finishing .
2 . Acetic acid is used in the manufacture of rayon and in plastics , in in rubber and silk industries , in cooking and in vinegar ( a 8-10 % solution of acetic acid ).
3 . Benzoic acid and its salts are used as urinary antiseptics . 4 . Formic acid can act as a reducing agent .
Derivatives of Carboxylic acids
These are obtained when -OH group of carboxylic acids is replaced by Cl ,
NH2 , OR ‟ and OCOR and are called respectively acid chloride , acid amide , ester and acid anhydride .