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F L U I D
Date 01/04
DESCRIPTION:
QUALITIES:
CITGO Invert FR Fluid is a heavy-duty water-in-oil (invert) emulsion type fire-resistant hydraulic fluid.
It is a pre-mixed, ready-to-use fluid.
CITGO Invert FR Fluid is a stable inverted emulsion of water and lubricating mineral oil put together
with emulsifiers and selected additives to make a balanced fire-resistant hydraulic fluid.
CITGO Invert FR Fluid contains antiwear additives to assure optimum service life for hydraulic pumps,
motors, valves and other circuit components.
CITGO Invert FR Fluid contains rust and corrosion inhibitors to protect the various types of metals and
alloys commonly used in hydraulic circuits. Under normal operating conditions, these do not need
replenishing. This fluid also contains a biocide to inhibit bacterial action.
CITGO Invert FR Fluid passes all Factory Mutual requirements for a fire-resistant hydraulic fluid. To
insure adequate fire-resistance, the water content of this fluid should be maintained between
38% and 42% by volume.
CITGO Invert FR Fluid has excellent emulsion stability at temperatures exceeding normal hydraulic
fluid operating temperatures. The fluid is also able to withstand freeze-thaw cycles without separating.
APPLICATIONS:
CAUTION:
CITGO Invert FR Fluid has wide usage in the coal mining, steel producing, and automobile industries,
as well as in die casting plants or any industrial installation where the use of an invert emulsion type
fire-resistant fluid is acceptable. New fluid is ready to use as received. No further addition of water
is needed.
Avoid filters and strainers on the pump inlet side of the system. Avoid water absorbent filters
such as waste-packed or Fuller’s earth units. Paper filters should only be used if their
manufacturer provides assurance that they are compatible with water-containing fluids.
Systems should be operated under 2000 psi and temperature should not exceed 150°F to avoid
excessive water loss. Most systems will operate 5°-15°F cooler with Invert FR Fluid than with
ordinary petroleum or synthetic fluids.
CUSTOMER
BENEFITS:
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Excellent fire retardance
Lower cost than synthetic products
Good antiwear properties
Good system rust and corrosion protection
Minimum system preparation if changing from petroleum oils
Cooler running systems
Approved by the Mining Safety and Health Administration Department of Labor
Approved by Factory Mutual System as a fire resistant fluid, Group 2 (HF-D)
C I T G O P e t r o l e u m C o r p o r a t i o n • 8 0 0 / 2 4 8 - 4 6 8 4 • H o u s t o n , Te x a s • M a d e i n U S A
C10033
TYPICAL PROPERTIES:
CITGO INVERT FR FLUID
Material Code
648401001
Gravity, ASTM D 4052, °API
Specific Gravity at 60/60°F
Pounds Per Gallon
Viscosity, ASTM D 445, cSt at 40°C
cSt at 100°C
ASTM D 2161, SUS at 100°F
SUS at 150°F
pH
Water, % Vol.
Oil, % Vol.
Emulsion Stability
30 days at 77°F
Oil Separation, %
Water Separation, %
24 Hours at 140°F
Oil Separation, %
Water Separation, %
Pour Point, ASTM D 97, °F (°C)
Slush Point, °F (°C)
Freeze Point, °F (°C)
Appearance
22.0
0.92
7.68
100
18.5
500
175
7.1
40
60
1.0
Nil
1.5
Trace
-20 (-29)
-2 (-19)
-20 (-29)
Milky White