Tert-ButylPhenyl Diphenyl Phosphate (BPDP)

Coating raw materials 2025-05-14

Tert-ButylPhenyl Diphenyl Phosphate (BPDP)
CAS No.: 115-86-6
Molecular weight: 326.29
Molecular formula: C18H15O4P;OP(OC6H5)3
Quality standard
Physical appearance: ​Clear and transparent liquid
Phosphorus content (wt·%): 8.5-9.5
Density (20℃)/(kg/m3): 1150-1182
Viscosity (25℃)/(mPa·S): 70-100
Acid value (mgKOH/g): 0.1
Color number (APHA): <80
Water content (%): ≤0.1
Free phenol (%): ≤0.1

Tertiary-butylated triphenyl phosphate (same as Supresta Phosflex R71B) is a highly effective flame retardant plasticizer with good compatibility with PVC and other materials such as PPO and PC/ABS alloys. When tert-butyl phosphate is considered as a conventional plasticizer, it can balance the flame retardancy and plasticizing efficiency of the system. Its high thermal stability allows it to be used as a flame retardant for engineering plastics and can also improve the melting properties of plastics.