Bisphenol-A bis(diphenyl phosphate)

Bisphenol A diphenyl phosphate is a halogen-free flame retardant used plastics. It is used in polymer blends of engineering plastics, such as PPO/HIPS and PC/ABS,^[1] which are commonly used to make casing for electrical items like TVs, computers and home appliances.

Bisphenol-A bis(diphenyl phosphate)

Names
Other names Tetraphenyl (propane-2,2-diylbis(4,1-phenylene)) bis(phosphate) (1-methylethylidene)di-4,1-phenylenetetraphenyl diphosphate
Identifiers
CAS Number	5945-33-5
3D model (JSmol)	Interactive image
ChemSpider	8050514
EC Number	425-220-8
PubChem CID	9874825
CompTox Dashboard (EPA)	DTXSID8052720
InChI Key: BQPNUOYXSVUVMY-UHFFFAOYSA-N InChI=1S/C39H34O8P2/c1-39(2,31-23-27-37(28-24-31)46-48(40,42-33-15-7-3-8-16-33)43-34-17-9-4-10-18-34)32-25-29-38(30-26-32)47-49(41,44-35-19-11-5-12-20-35)45-36-21-13-6-14-22-36/h3-30H,1-2H3
SMILES CC(C)(C1=CC=C(C=C1)OP(=O)(OC2=CC=CC=C2)OC3=CC=CC=C3)C4=CC=C(C=C4)OP(=O)(OC5=CC=CC=C5)OC6=CC=CC=C6
Properties
Chemical formula	C39H34O8P2
Molar mass	692.641 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

It is formed by the transesterification of bisphenol A with triphenyl phosphate. The commercial grade material can contain oligomers (CAS: 181028–79–5)

Oligomers, where n = >1

References

1. Pawlowski, Kristin H; Schartel, Bernhard (November 2007). "Flame retardancy mechanisms of triphenyl phosphate, resorcinol bis(diphenyl phosphate) and bisphenol A bis(diphenyl phosphate) in polycarbonate/acrylonitrile–butadiene–styrene blends". Polymer International. 56 (11): 1404–1414. doi:10.1002/pi.2290.