4,4'-Dichlorodiphenyl sulfone
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4,4′-Dichlorodiphenyl sulfone (DCDPS) is an organic compound with the formula (ClC6H4)2SO2. Classified as a sulfone, this white solid is most commonly used as a precursor to polymers that are rigid and temperature-resistant such as PES or Udel.
Names | |
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Preferred IUPAC name 1,1′-Sulfonylbis(4-chlorobenzene) | |
Other names
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Identifiers | |
3D model (JSmol) | |
ChemSpider | |
ECHA InfoCard | 100.001.135 |
PubChem CID | |
UNII | |
CompTox Dashboard (EPA) | |
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Properties | |
C12H8Cl2O2S | |
Molar mass | 287.15 g·mol−1 |
Appearance | White solid |
Melting point | 148 °C (298 °F; 421 K) |
Boiling point | 397 °C (747 °F; 670 K) |
Insoluble | |
Hazards | |
Safety data sheet (SDS) | External MSDS |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
Synthesis and reactions
DCDPS is synthesized via sulfonation of chlorobenzene with sulfuric acid, often in the presence of various additives to optimize the formation of the 4,4′-isomer:
- ClC6H5 + SO3 → (ClC6H4)2SO2 + H2O
It can also be produced by chlorination of diphenylsulfone.
With chloride substituents activated toward substitution, DCDPS is useful in the production of polysulfones:
- n (ClC6H4)2SO2 + n NaO−X−ONa → [(O−X−OC6H4)2SO2]n + 2n NaCl
Further reading
- Graybill, Bruce M. (1967). "Synthesis of aryl sulfones". The Journal of Organic Chemistry. 32 (9): 2931–2933. doi:10.1021/jo01284a075.
- Udel Polysulfone Design Guide (Report). Alpharetta, GA: Solvay Advanced Polymers. pp. 7–10.
- Radel PPSU, Veradel PESU and Acudel modified PPSU Design Guide by Solvay