Bisphenol A (BPA) is an organic synthetic compound with the chemical formula (CH3)2C(C6H4OH)2 belonging to the group of diphenylmethane derivatives and bisphenols, with two hydroxyphenyl groups. It is a colorless solid that is soluble in organic solvents, but poorly soluble in water (0.344 wt % at 83 °C).
What type of chemical is bisphenol A BPA?
BPA stands for bisphenol A, an industrial chemical that has been used to make certain plastics and resins since the 1950s. BPA is found in polycarbonate plastics and epoxy resins. Polycarbonate plastics are often used in containers that store food and beverages, such as water bottles.
What are the properties of bisphenol A?
Bisphenol A
| Names | |
|---|---|
| Appearance | White solid |
| Density | 1.20 g/cm³ |
| Melting point | 158 to 159 °C (316 to 318 °F; 431 to 432 K) |
| Boiling point | 360 °C (680 °F; 633 K) |
What is the TDI for BPA?
The Tolerable Daily Intake or “TDI” is a safety threshold aimed at ensuring consumer protection: it is the maximum amount of a substance to which any individual can be exposed every day of his/her life, through all possible sources, without any risk to his/her health.
How is BPA used in plastics?
Bisphenol A (BPA) is a chemical used to make polycarbonate plastic. BPA is also used to make epoxy resins. Epoxy resin linings coat the inside of metal products such as food cans, bottle tops and water supply pipes. The purpose of epoxy linings is to keep the can material from corroding or reacting with the food.
Why is bisphenol A used in plastics?
BPA is an industrial chemical used to make polycarbonate, a hard, clear plastic, which is used in many consumer products. BPA is also found in epoxy resins, which act as a protective lining on the inside of some metal-based food and beverage cans.
How is BPA made?
Bisphenol A is produced by the condensation of phenol and acetone in the presence of an acid catalyst (hydrogen chloride) and usually a promoter such as methyl mercaptan. Two grades of BPA are produced; one suitable for epoxy resin manufacture and a higher purity grade for polycarbonate production.
What is bisphenol A chemistry?
Bisphenol A is a diphenylmethane derivative with two hydroxyphenyl groups. Bisphenol A (BPA) is a colorless solid that is used in the synthesis of commercial plastics, including polycarbonates and epoxy resins, which are incorporated into a wide variety of consumer goods. Ingested BPA may exhibit estrogenic effects.
Why is bisphenol A BPA causing such concern among many scientists?
Why is bisphenol A (BPA) causing such concern among many scientists? The concentration of toxin can more than double at each level of the food chain. Which of the following statements is true of biomagnification? All of these determine the toxicity of a chemical.
How is BPA used to make plastics?
BPA is an industrial chemical used to make a hard, clear plastic known as polycarbonate. It may also be used as an ingredient in some resins, which can act as a lining on the inside of some metal food and drink cans. plastic food storage containers, including: pitchers.
Is bisphenol A compound?
4,4′-(propane-2,2-diyl)diphenol
Bisphenol A/IUPAC ID
Which of the following determines the toxicity of a chemical?
The toxicity of a substance depends on three factors: its chemical structure, the extent to which the substance is absorbed by the body, and the body’s ability to detoxify the substance (change it into less toxic substances) and eliminate it from the body.
What is the EFSA doing about bisphenol S?
In 2020 a group of EFSA scientists with input from Belgium’s Federal Public Service for Health, Food Chain Safety and the Environment (FPS) and the European Chemicals Agency (ECHA), completed an interagency cooperation project involving the assessment of two new studies on bisphenol S (BPS).
How much bisphenol A (BPA) is safe?
EFSA has, in its opinion of 26 November 2006, established for BPA (BPA) a tolerable daily. intake (TDI) of 0.05 milligram per kilogram (mg/kg) body weight based on the no adverse effect level. of 5 mg/kg body weight in rodent studies. A new opinion on the toxicokinetics of Bisphenol was adopted by EFSA on 9 July 2008.
What does EFSA do to ensure BPA is safe?
EFSA adopts scientific opinions and provides scientific advice for risk managers on the safety of BPA when used in materials which come into contact with food. This work is carried out by EFSA’s Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEP).
What are the EU regulations on Bisphenol A?
EU framework 1 Regulation EU 10/2011 on plastic materials and food contact materials – EUR-Lex 2 Directive 2011/8/EU restricting the use of bisphenol A in plastic infant feeding bottles – EUR-Lex 3 Regulation EU 2018/213 on the use of bisphenol A in varnishes and coatings intended to come into contact with food – EUR-Lex
