|  | |  |  | 4'-CHLOROACETANILIDE Basic information | 
|  |  | 4'-CHLOROACETANILIDE Chemical Properties | 
 | Melting point | 176-178 °C(lit.) |  | Boiling point | 333 °C |  | density | 1,385 g/cm3 |  | refractive index | 1.5670 (estimate) |  | Fp | 333°C |  | storage temp. | 2-8°C |  | solubility | dioxane: 50 mg/mL hot, clear |  | pka | 14.25±0.70(Predicted) |  | form | Crystalline Powder |  | color | White or grayish-beige |  | Water Solubility | Insoluble in water. |  | Merck | 14,2111 |  | BRN | 509638 |  | CAS DataBase Reference | 539-03-7(CAS DataBase Reference) |  | EPA Substance Registry System | 4-Chloroacetanilide (539-03-7) | 
|  |  | 4'-CHLOROACETANILIDE Usage And Synthesis | 
 | Chemical Properties | white or greyish-beige crystalline powder |  | Uses | 4'-Chloroacetanilide is used in pharmaceutical preparations, using PGC column. And also used in the synthesis of alprazolam. |  | Definition | ChEBI: Acetamide substituted on nitrogen by a para-chlorophenyl group. |  | Synthesis Reference(s) | Tetrahedron, 52, p. 8863, 1996 DOI: 10.1016/0040-4020(96)00433-4 |  | General Description | 4′-Chloroacetanilide is the main impurity present in acetaminophen and has been quantitated by new high-performance liquid chromatography method using a mixed-mode reversed-phase/cation exchange stationary phase. |  | Purification Methods | Crystallise the anilide from EtOH or aqueous EtOH. [Beilstein 12 IV 1178.] | 
|  |  | 4'-CHLOROACETANILIDE Preparation Products And Raw materials | 
 |