Fyrolflex/Reofos RDP, Resorcinol bis(diphenyl Phosphate)


Product Name: Resorcinol bis(diphenyl Phosphate)(RDP)

Equivalent Name: Chemtura Reofos RDP; Supresta Fyrolflex RDP

Cas No. : 57583‐54‐7

Molecular Weight: 574.43

Chemical Structure:

Resorcinol bis(diphenylphosphate) RDP chemical structure baoxu chemical


RDP is a halogen‐free phosphate ester flame retardant used in engineering resins, low volatility, and high heat stability which can tolerate the high-temperature processing required of many engineered resins. It’s recommended as the flame retardant for PC/ABS, PPO/HIPS.

Typical Properties

Appearance Transparent to pale‐yellow liquid

Color (APHA) 80 max

Acid Value (mg KOH/g) 01 max

TPP content (wt,%)50 max

Water content(wt, %)005 max

Phosphorus content (wt theory) %108

Phenol content (ppm) 500 max

Viscosity (25° C, mPa∙s) 500 – 800

Density (25°C, g/cm3) 1315±0010


5% weight loss 307°C

10% weight loss 337°C

50% weight loss 403°C

These properties are typical but do not constitute a specification either in part or as a whole. Specification data is available on request from sales, customer service, or customer technical service.


Transportation classification: No regulation for transportation.

Packing: 250kg /drum.4Drums /pallet


TDS / MSDS Download

RDP Resorcinol bis(diphenylphosphate) 57583-54-7 tds baoxu chemical

RDP Resorcinol bis(diphenylphosphate) 57583-54-7 msds baoxu chemical