 
            
        This is an Application Brief and does not contain a detailed Experimental section.
This application brief demonstrates analysis of salicylic acid and related compounds.
The compounds used in this study are –
| Compounds | USP Tailing Factors | 
|---|---|
| Phthalic Acid | 1.7 | 
| Salicylic Acid | 1.1 | 
| Benzoic Acid | 1.4 | 
 
            
        | Column: | Symmetry C18, 3.9 x 150 mm, 5 μm | 
| Part numbers: | WAT046980 | 
| Mobile phase: | 50 mM potassium phosphate pH 3.0/acetonitrile 70:30 | 
| Temperature: | 40 °C | 
| Flow rate: | 0.7 mL/min | 
| Injection volume: | 6 μL of phthalic acid (0.5 mg/mL), benzoic and salicylic acids (1 mg/mL) | 
| Detection: | UV @ 254 nm | 
 
            
        WA31763.146, June 2003