?4-Chlorosalicylic acid (CAS NO.5106-98-9) is also named as 2-Hydroxy-4-chlorobenzoic acid ; 4-Chloro-2-hydroxybenzoic acid ; AI3-34238 ; NSC 15816?; Benzoic acid, 4-chloro-2-hydroxy- ; Salicylic acid, 4-chloro- (8CI) .?4-Chlorosalicylic acid (CAS NO.5106-98-9) is off-white to light beige powder.