Bisphenol A

Cas Number


Other Names

BPA, p,p'-Isopropylidenebisphenol,


The formula



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. It has been in commercial use since 1957.

Physical and Chemical Properties
Physical state and appearance Solid, white bead
Odor Mild phenolic
Molecular Weight 228.29 g mol−1
Color White
Boiling Point 220 °C (493 K) / 4 mmHg
Flash point 227°C
Melting Point 158 to 159 °C (430 K)
Specific Gravity @ 25 deg C
Vapor Pressure < 1.0 mm Hg
Solubility <0.18/100 g
Purity, wt% 99.8 min
Freezing point, degree c 156.6 min
(35.5g bpa in 50ml methanol) 10 max
free phenol, wt-ppm 50 max
ash, wt-ppm 5 max
iron, wt-ppm 0.5 max

1. Bisphenol A (BPA) is a chemical building block that is used primarily to make polycarbonate plastic which is used in a wide variety of common products including digital media (e.g., CDs, DVDs), electrical and electronic equipment, automobiles, sports safety equipment, reusable food and drink containers, and many other

2. BPA is also used in the production of epoxy resins which is widely used as inert material used as protective liners in metal cans to maintain the quality of canned foods and beverages, and have achieved wide acceptance for use as protective coatings because of their exceptional combination of toughness, adhesion, formability, and chemical resistance