Bisphenol AF is a specialty chemical used in fluoropolymers and fluoroelastomers primarily as a cross-linker or curing agent. Two grades are available: Bisphenol AF Technical for general use, and Bisphenol AF Polymer Grade for applications requiring very low polymer color.
| Bisphenol AF Technical |
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| Purity, % | 97.5 min. |
| o,p-Monoadducts, % | 1.4 max. |
| Bis-hexafluoroacetone, % | 0.2 max. |
| o,p'-Bisphenol AF, % | 0.6 max. |
| Trimer, % | 0.2 max. |
| Phenol, % | 0.2 max. |
| Hydrofluoric acid, % | 0.2 max. |
| Water, % | 0.3 max. |
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| Bisphenol AF Polymer Grade | |
| Purity, % | 99 min. |
| Water, % | 0.3 max. |
| Color index | 0.5 max. |
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Uses
Bisphenol AF is used to cure or cross-link fluorocarbon elastomers, often in conjunction with an accelerator such as triphenyl benzylphosphonium chloride (BTPPC). When used as a curing agent, Bisphenol AF produces fluoroelastomers with convenient processing and excellent properties in the final elastomer, including compression set, chemical resistance and thermal stability.
Bisphenol AF is also useful as a monomer in the synthesis of specialty polyimides, polyamides, polyesters, polycarbonates and other polymers. Polymers containing Bisphenol AF are useful in high-temperature composites, in electronic materials, in gas permeable membranes, and in other specialty polymer applications.
Typical Physical Properties*
| Property | Value |
| CAS Name | 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylidene]bisphenol |
| Other Name | Hexafluoro bisphenol A |
| CAS Number | 1478-61-1 |
| Formula | C15H10F6O2 |
| Molecular weight | 336 |
| Form | Coarse powder |
| Color | White (Polymer
Grade), Light gray or tan (Technical) |
| Melting Point | 163 C (325 F) |
| Solubility in Water | <2 wt% at 100 C (212 F) |
| Odor | none |
| % Volatiles | 0 wt % |
| *This table gives typical properties based on historical production performance. DuPont does not make any express or implied warranty that these products will continue to have these typical properties. |
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Handling
Bisphenol AF is a skin and eye irritant. Care should be taken to avoid contact by wearing appropriate gloves, safety glasses and other protective equipment as needed. Refer to the MSDS for further handling information.
Packages
Bisphenol AF Technical and Polymer Grade are available in 90.72kg (200 lb) net fiber drums.
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