Bisphenol A, commonly abbreviated as BPA, is a key monomer in production of polycarbonate plastic and epoxy resins, and it is widely used in products such as food cans, milk container linings, water pipes and even dental sealants. Recently, one expert group which is composited by 38 experts on the bisphenol A, published a consensus statement on the basis of more than 700 studies, and reported that this substance maybe harmful. The statement published in the "reproductive Toxicology "magazine. The toxicology of bisphenol A (BPA) has been extensively studied over the past several decades, these studies have shown that bisphenol A is an endocrine disruptor: it is an estrogen receptor agonist, and such agonists can act like the body's own hormones, leading to similar physiological effects on the body. There is thus concern that long term low dose exposure to bisphenol A may induce chronic toxicity in humans.

Bisphenol A, IUPAC name is 4,4'-dihydroxy-2,2-diphenylpropane, is prepared by the condensation of acetone with two equivalents of phenol. Products containing or made from Bisphenol A have been in commerce for more than 50 years, and its current uses are numerous. It is used in the synthesis of polyesters, polysulfones, and polyether ketones, as an antioxidant in some plasticizers, and as a polymerization inhibitor in PVC.

IUPAC name: 4,4'-dihydroxy-2,2-diphenylpropane
Other names: BPA, 4,4'-(propan-2-ylidene)diphenol,
p, p'-isopropylidenebisphenol,
4,4´-isopropylidenediphenol.
molecular formular:C15H16O2
molecular weight:228.3g/mol
CAS number:80-05-7
UN number:3077
Toxicity:LD50 LC50
Health effects:
The bisphenol A is toxic, and prolonged inhalation of bisphenol A powder is harmful to the liver function and kidney function; Particularly, it will reduce the content of hemoglobin in the blood.

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