PRODUCT Properties
| Melting point: | 157 °C |
| Boiling point: | 399.5±27.0 °C(Predicted) |
| Density | 1.586±0.06 g/cm3(Predicted) |
| storage temp. | Sealed in dry,Room Temperature |
| pka | 2.88±0.10(Predicted) |
| Appearance | White to off-white Solid |
| CAS DataBase Reference | 89-20-3(CAS DataBase Reference) |
| EPA Substance Registry System | 1,2-Benzenedicarboxylic acid, 4-chloro- (89-20-3) |
Description and Uses
4-Chlorophthalic acid is converted into biphenyltetracarboxylic acid by dehalogenation and quantitative reaction, and this compound is useful in industry as a raw material for, for example, heat-resistant resins and resin plasticizers. A known method for producing 4-chlorophthalic acid is, for example, a method of chlorinating phthalic acid in an aqueous medium in the presence of caustic alkali. A common method is to use a caustic alkali aqueous solution in which chlorine is dissolved as a bed solution. Chlorine gas is supplied to react.
Safety
| Symbol(GHS) |  GHS07 |
| Signal word | Warning |
| Hazard statements | H302-H315-H319-H335 |
| Precautionary statements | P261-P305+P351+P338 |
