|  | |  |  | 3,4-Dichlorobenzoic acid Basic information | 
 | Product Name: | 3,4-Dichlorobenzoic acid |  | Synonyms: | Benzoic  acid,3,4-dichloro-;Benzoic  acid,3,4-dichloro-(8CI,  9CI);3,4-Dichlorobenzoic acid, 98+% 25GR;Dichlorobenzoic Aci;3,4-Dichlorobenzoic Acid, 97+%;RARECHEM AL BO 0329;3,4-dichloro-benzoicaci;3,4-DCBA |  | CAS: | 51-44-5 |  | MF: | C7H4Cl2O2 |  | MW: | 191.01 |  | EINECS: | 200-099-2 |  | Product Categories: | Carboxylic  Acids;Alpha  sort;D;DAlphabetic;DIA  -  DIC;Pesticides&Metabolites;C7;Carbonyl  Compounds;Aromatic Carboxylic Acids, Amides, Anilides, Anhydrides & Salts;Benzoic acid;Organic acids;API intermediates;Acids & Esters;Chlorine Compounds |  | Mol File: | 51-44-5.mol |  |  | 
|  |  | 3,4-Dichlorobenzoic acid Chemical Properties | 
|  |  | 3,4-Dichlorobenzoic acid Usage And Synthesis | 
 | Chemical Properties | White to light yellow crystal powder |  | Uses | 3,4-Dichlorobenzoic acid was employed as internal standard during the multiresidue analysis of pharmaceuticals and personal care products by ultra performance liquid chromatography-positive/negative electrospray tandem mass spectrometry. It was used to study the metabolic fate of 4-chloro-3,5-dinitrobenzoic acid. |  | Definition | ChEBI: A chlorobenzoic acid carrying chloro substituents at positions 3 and 4. |  | Synthesis Reference(s) | Journal of the American Chemical Society, 98, p. 843, 1976 DOI: 10.1021/ja00419a038 |  | Safety Profile | Poison by 
subcutaneous route. When heated to 
decomposition it emits toxic fumes of Cl-. |  | Purification Methods | Crystallise the acid from aqueous EtOH (charcoal) or acetic acid. [Beilstein 9 IV 1006.] Aromatic acid impurities (to <0.05%) can be removed via the (±)--methylbenzylamine salt as described for 2,4-dichlorobenzoic acid [Ley & Yates Organic Process Research & Development 12 120 2008.] | 
|  |  | 3,4-Dichlorobenzoic acid Preparation Products And Raw materials | 
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