Fyrolflex® RDP-HP is a high-purity oligomeric phosphate ester flame retardant with low triphenyl phosphate (TPP) content. It also has very low phenol (typically below 50 ppm) and water content. Designed for engineered resin applications such as polyphenylene oxide alloys and PC/ABS, Fyrolflex® RDP-HP offers low volatility and high heat stability, making it suitable for high-temperature processing required by many engineered resins. It is a non-halogen flame retardant.

Chemical Name: Resorcinol Bis(Diphenyl Phosphate)

Chemical Family: Organophosphates, Phosphate Esters, Phosphorous-based Compounds

Labeling Claims: High Purity

Compatible Polymers & Resins: Acrylonitrile Butadiene Styrene (ABS), High-Impact Polystyrene (HIPS), Polycarbonates (PC), Polyphenylene Ether (PPE)

Enhanced TDS

Identification & Functionality

Features & Benefits

Labeling Claims
Materials Features
Key Features

In addition to its FR characteristics, Fyrolflex® RDP-HP demonstrates improved processing characteristics in a number of thermoplastics including ABS and HIPS that benefits designs like thin wall moldings, and other high-performance, high flow plastic applications. Typically, RDP-HP is used at 8 to 15 phr to provide flame retardancy in a variety of resins. When used as a processing aid, 1 to 3 phr of RDP-HP is added to thermoplastics to improve melt flow characteristics with minimal loss of dimensional stability. Compared to other non-halogen FRs (phosphate esters), Fyrolflex® RDP-HP is relatively stable with low volatility, well within the processing parameters of most engineered plastics (onset decomposition >330° C).

Fyrolflex® RDP-HP has the advantage over other bis-phosphates with its low viscosity. This allows for ease of handling, and better and safer management of resources (lower heat storage). Fyrolflex RDP-HP has higher phosphorus content than bis-phenol A bis phosphates which means lower use levels.

Applications & Uses

Properties

Physical Form
Appearance
Clear transparent liquid
Typical Properties
ValueUnitsTest Method / Conditions
10% Weight Loss (10°C/min. in nitrogen, Thermogravimetric Analysis)374°C-
5% Weight Loss (10°C/min. in nitrogen, Thermogravimetric Analysis)356°C-
2% Weight Loss (10°C/min. in nitrogen, Thermogravimetric Analysis)335°C-
Triphenyl Phosphatemax. 0.1wt%-
Refractive Index (at 25°C)1.478--
Pour Point-9°C-
Colormax. 100--
Water Contentmax. 0.1wt%-
Aciditymax. 0.12mg KOH/g-
Viscosity (at 25°C)575mPa.s-
Density (at 25°C)1300kg/m³-
Specific Gravity (at 25°C)1.3--
Phosphorus Content10.7wt%-
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
OdorSlight characteristic--
ColorColorless to yellowish--
AppearanceColorless to pale yellow viscous liquid--
Physical StateLiquid--
Bulk Density (at 25°C)10.8lbs/gal-
Molecular Weight574.4543--
Oxidising PropertiesNot oxidising--
Pour Point-12.22°C-
Dynamic Viscosity (at 25°C)600mPa.s-
Decomposition Temperaturemin. 210°C-
Auto Ignition TemperatureNot self-ignitable--
Solubility in Water8.9µg/L-
Relative Density (at 25°C)1.304--
Vapor Pressure (at 20°C)2.59x10⁻³Pa-
Flammability (Solid, Gas)Not flammable--
Flash Pointmin. 230°C-
Boiling Pointmin. 400°C-
Melting Point-13°C-

Packaging & Availability

Shipping Information

Available in bulk tank trucks, isocontainers, IBCs of 1270 Kg and drums of 268 Kg.