Halogen-free phosphate ester flame retardant

FCL-FR0059 Halogen-free phosphate ester flame retardants (CAS: 5945-33-5) are a class of environmentally friendly flame retardants that do not contain halogens such as bromine or chlorine. This product has low volatility, excellent hydrolysis stability and thermal stability. It can be used as a flame retardant plasticizer for engineering plastics such as PC/ABS and PPO/HIPS. It can also be used as a flame retardant plasticizer for PVC with high thermal stability.

Basic information：

Product name: FCL-FR0059

Chemical name: Bisphenol A-bis(2,4-diphenyl phosphate)

CAS: 5945-33-5

Phosphorus content (wt.%): 8.9

N=1 content: 80-89

Color (APHA) ≤ 80

Acid value (mg KOH/g) ≤0.1

Moisture (wt.%) ≤0.1

Density (25°C, g/cm3): 1.260±0.010

Viscosity (40°C, mPa · s): 1800-2600

TPP content (wt.%) ≤3.0

Phenol content (ppm) less than or equal to 500

Mechanism：

1. Coagulation phase flame retardant mechanism

-Decompose at high temperature to generate polyphosphate, and catalytic material dehydrate into carbon

-Form a dense expanded carbon layer to isolate oxygen, block heat transfer and inhibit the release of flammable gas

-Especially suitable for oxygen-containing polymer materials (such as PC, ABS, etc.)

2. Gaseous flame retardant mechanism

-Thermal decomposition produces PO · radicals

-Capture H· and OH· active free radicals in the combustion chain

-Interrupt the chain reaction of combustion

3. Synergies

When combined with nitrogen-containing compounds (such as melamine), a more stable P-N bond is generated, which enhances the carbonization effect and improves the flame retardant efficiency

Advantages：

1. Excellent thermal stability, decomposition temperature>300℃, suitable for high temperature processing technology

2. Good compatibility, compatible with a variety of engineering plastics, not easy to migrate and precipitate

3. Environmental protection advantages, no halogen, no odor when burning, in line with RoHS, REACH and other regulations

Market superiority: 

1. Compared with traditional TPP, it has higher thermal stability, lower volatility and better migration resistance

2. Compared with brominated flame retardants, it is more environmentally friendly, no corrosive gas release, and in line with stricter environmental regulations

Application：

FCL-FR0059 is a halogen-free phosphate ester flame retardant with low volatility, excellent hydrolysis stability and thermal stability. It can be used as a flame retardant plasticizer for engineering plastics such as PC/ABS and PPO/HIPS. It can also be used as a flame retardant plasticizer for PVC with high thermal stability.

Packaging and storage

-Iron drum packing, net weight 250 kg

-Wear protective gloves during operation to avoid inhalation of dust

-Storage conditions, sealed storage, placed in a cool and dry place, away from strong oxidants

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