The bisphenols (pronounced //) are a group of chemical compounds with two hydroxyphenyl functionalities. Most of them are based on diphenylmethane. The exceptions are bisphenol S, P, and M. "Bisphenol" is a common name; the letter following refers to one of the reactants. Bisphenol A is the most popular representative of this group, often simply called "bisphenol."
|Structural formula||Name||CAS||Reactants||Systematic name|
|Bisphenol C 2||14868-03-2||Phenol||Dichloromethane||Bis(4-hydroxyphenyl)-2,2-dichlorethylene|
|Bisphenol S||80-09-1||Phenol||Sulfur trioxide||Bis(4-hydroxyphenyl)sulfone|
|Bisphenol PH||24038-68-4||2-Phenylphenol||Acetone||5,5’ -(1-Methylethyliden)-bis[1,1’-(bisphenyl)-2-ol]propane|
Bisphenols A (BPA) and S (BPS) are endocrine disruptors. Due to its high production volumes BPA has been characterised as a "pseudo-persistent" chemical, leading to its spreading and potential accumulation in a variety of environmental matrices.
These products tend to release from the material when heated; as a precaution, it is recommended for the consumer:
- not to heat food in a plastic packaging in a microwave oven, or a tin can (its inside coating is often epoxy) with a bain-marie;
- use a pitcher material other than plastic, not a plastic bottle.
- "BPA-Free Plastic Containers May Be Just as Hazardous". Scientific American. Retrieved 8 August 2015.
- "Bisphenol A (BPA) & Bisphenol S (BPS)". SaferChemicals.org. Retrieved 8 August 2015.
- Pivnenko, K.; Pedersen, G. A.; Eriksson, E.; Astrup, T. F. (2015-10-01). "Bisphenol A and its structural analogues in household waste paper". Waste Management. 44: 39–47. doi:10.1016/j.wasman.2015.07.017. PMID 26194879.