FR-522

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FR-522

Chemical Name:
Dibromoneopentyl glycol
Formula:

C5H10Br2O2

CAS Number:
3296-90-0
Molecular Weight:
261.9

General & Use:

FR-522, dibromoneopentyl glycol, a reactive flame retardant, contains 60% aliphatic bromine. Its high purity (FR-522 is typically 99% pure), is of benefit to the formulator. Thermosetting polyester resins can be formulated over a wide range of compositions to provide a broader selection of resin properties than those available with anhydride flame retardants. Resins formulated with FR-522 have high chemical and flame resistance, minimal thermal discoloration and excellent light stability. The high bromine content of FR-522 and its ready reaction into polyurethanes make it suitable for use in rigid polyurethane foams. It is increasingly used in CFC-free foam systems designed to meet more stringent standards of flame retardancy.

Typical Properties:

Property

Appearance
off-white crystalline powder

Bromine Content (Wt.%)
60

Specific Gravity
2.23

Assay (GC) (Wt.%)
99

Melting Point (°C)
109.5

Moisture (Karl Fischer) (Wt.%)
0.08

Hydroxyl content (Wt.%)
13

Hydroxyl Value (mg KOH/g)
420

Color Gardner (molten)
3

Thermogravimetric Analysis, (10°C/min, air)

Weight loss (%) °C
2 200
5 225
10 245

Solubility

g/100 g solvent, at: 25°C 40°C 100°C
Acetone 83
Carbon tetrachloride 0.5
Isopropanol 52
Methanol 187
Water 2
Xylene 0.5 100

 

Please note that the values indicated do not constitute specification limits. To obtain current specifications, refer to your local Sales Office/Representative or ICL-IP Head Office at address herein.

 

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