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Fyrol® 6

Technical Datasheet | Supplied by ICL Industrial
Fyrol® 6 by ICL Industrial is diethyl-N, N-bis (2-hydroxyethyl) aminomethylphosphonate. It is designed for use as a reactive flame retardant in polyurethane foams and urethane elastomers. It is incorporated into the foam structure by reacting as a polyol. It can also be used to aid in the bonding process for flame lamination of fabric with flexible foams. Fyrol® 6 can also be used as a flame retardant for printing wiring board applications. It is excellent for spray, pour-in-place systems and slab foams.
Product Type
Flame Retardants / Smoke Suppressants > other Phosphorous-based
Chemical Composition
Diethyl-N, N-bis (2-hydroxyethyl) aminomethylphosphonate
CAS Number
Physical Form
Dark amber
Product Status
Applications/ Recommended for
  • Fibers/ Textiles/ Carpets
  • Electronics / Computers > Printed circuit boards
  • Safety, regulation & environment > Flame retardancy

Fyrol® 6 Properties


Value & Unit
Test Condition
Test Method
Phosphorus Content
12.4 wt %
1160 kg/m3
(At 25°C)
6.0 mg KOH/g

SpecialChem additionnal informations based on CAS Number : 2781-11-5

Hansen Solubility Parameters

[17, 14.9, 14.8]
[δD - Dispersion force interactions, δP - Polar force interactions, δH - Hydrogen bond force interactions]

Please note, these HSP values are estimations. It is based upon the “like seeks like” principle. It splits an ingredients interactions into three parameters; δD (Dispersion force interactions), δP (Polar forces interactions) and δH (Hydrogen bond force interactions). Hansen Solubility Parameters can help you find a wide range of products that are predicted to be compatible with Fyrol® 6. A practical determination of these HSP values would provide higher certainty. Learn More.

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