Fire resistant phosphate ester type fluids.

We are now ICL. Our heritage company names include ICL Supresta, Akzo Nobel Phosphorus Chemical and Stauffer Specialty Chemicals. This website is dedicated solely to support our Fyrquel® fire resistant fluid product supply and customer information needs.

Fyrquel® Fluids Description & Application

Fyrquel® fluids are triaryl phosphate ester ISO Class HFDR non aqueous fire resistant fluids available in a range of viscosities. Phosphate ester type fluids offer self extinguishing fire resistance that is needed for critical applications.

  • Steam turbine electro-hydraulic control systems
  • Gas turbine lubrication
  • Steel and aluminum furnace hydraulics
  • Die cast hydraulics
  • Reciprocating air compressors
  • Steam turbine lubrication

This video clearly demonstrates how Fyrquel® fluids offer superior fire protection compared to other fluids. Once black screen appears, scroll over to view video controls.

Power Generation

Steam Turbine electro-hydraulic control system application

1st Generation Fluid
trixylenyl phosphate – FYRQUEL® EHC N

2nd Generation Fluid
trixylenyl & t-butylphenyl phosphate – FYRQUEL® EHC
t-butylphenyl phosphate * – FYRQUEL® EHC S
*contains 15-25% Triphenyl Phosphate

Next Generation Fluid
Improved t-butylphenyl phosphate – FYRQUEL® EHC PLUS 1

Note 1

  • next gen improved t-butylphenyl phosphate with low triphenyl phosphate
  • EU REACH regulation preferred product choice — trixylenyl phosphate free
  • Contact your Fyrquel® representative to review choices
  • OEM approved
  • Compatible and mixable with prior generation fluids

Steam Turbine lubricant application
t-butylphenyl phosphate based – FYRQUEL® ST
trixylenyl phosphate – FYRQUEL® L

Gas Turbine lubricant application
t-butylphenyl phosphate based – FYRQUEL® GT

General Hydraulics T-butylphenyl Phosphate Based




US Military Specification

Contact your FYRQUEL® Representative for referral to US Mil Spec Fyrquel® Distributors

Hydraulic System Cleaning Products2

Fyrquel® Cleaning Fluid
Fyrquel® 220 is used for flushing purposes

Note 2
Contact your Fyrquel® representative to review guideline procedures and product choices  

Note about other types of synthetic fluids that are marketed as fire resistant but burn like mineral oil once ignited

Other types of synthetic fluids are not self extinguishing. Only phosphate ester types are self extinguishing. Other types of synthetic fluids are promoted as fire resistant but are easily shown only slightly more difficult to ignite compared to petroleum oil and when ignited readily propagate flame. These other type fluids do not self extinguish, should not be recommended for critical fire safety applications and are not substitutes for phosphate ester type self extinguishing fluids. The difference is easily shown by industry fire tests and by simple demonstration as shown in the video above.