Mobil COOLANOL™

Mobil COOLANOL

COOLANOL silicate ester synthetic dielectric heat transfer fluids are designed to meet the special needs of sensitive electronic components and environmental control systems in aircraft, missiles and spacecraft. The proven quality and reliability of COOLANOL is an important additional safeguard against costly and potentially catastrophic failure of critical airborne electrical equipment.
 

COOLANOL is specifically intended for liquid circulating systems (dynamic liquid phase) found in high-density electronic packages in aerospace and military applications. Such systems are in wide use because of their excellent heat transfer efficiency. COOLANOL should not be used in vaporizing (boiling liquid) systems.

  • Superb High and Low Temperature Stability
  • Versatile and Simple to Handle
  • Manufactured under Stringent Quality Control
  • Oxidative Stability
  • Radiation Resistance
  • Lubricity

 

To select the proper COOLANOL fluid for a given application, first determine the upper and lower temperature parameters of the application.

  1. Coolanol 20:  (-101 - 149 °C / -150 – 300 °F)
  2. Coolanol  25R:  (-54 - 149 °C / -65 – 300 °F)
  3. Coolanol OS-59: (-54 – 288 °C / -65 – 550 °F)

 

 

MIL-C-47220B (May 1985) military specification, though inactive, distinguishes five fluid types. Fluid types III and IV represent products from the family of COOLANOL fluids, as shown in Table 1.

Table 1

MIL-C-47220B Fluid TypeApplicable Fluid
Type IIICOOLANOL OS-59
Type IVCOOLANOL 25R

 

Certain COOLANOL fluids relate to military contractor specifications as shown in Table 2

Table 2

OEM SpecificationsApplicable Fluids
Boeing (McDonnell-Douglas) 
MMS-652, Rev ACOOLANOL 25R
Grumman GM 6003A, Amendment-No 1 
Type ICOOLANOL 25R
Hughes Aircraft HMS 20-1458 Rev ECOOLANOL 25R
Northrop MS-138, Rev ACOOLANOL 25R

 

TYPICAL PHYSICAL AND CHEMICAL PROPERTIES*
Mobil COOLANOL Dielectric Heat Transfer Fluids

Property (Test Method), UnitsCOOLANOL 20COOLANOL 25RCOOLANOL OS-59
Fluid Operating Temperature Range per MIL-C-47220BNone appliesType IVType III
Appearance (Visual)Clear, light amber liquidClear, colorless to light amber liquidClear, colorless liquid
Specific Gravity (25/25°C, ASTM D 4052)
Specification Limits
Typical Value
0.884-0.890
0.887
0.890-0.900
0.893
0.879-0.882
0.880
Viscosity at -65°F (ASTM D 445),cSt
Specification Limits
Typical Value
≤ 60
44
≤ 275
240
≤1500
1400
Viscosity at 0°F (ASTM D 445), cSt
Typical Value82363
Viscosity at 100°F (ASTM D 445), cSt
Specification Limits
Typical Value
1.9-2.2
2.05
≤ 4.5
4.15

6.9
Viscosity at 210°F (ASTM D 445), cSt
Specification Limits
Typical Value
0.88-1.0
0.94
≤ 1.53
 1.62
 
2.25
Viscosity at 40°C (ASTM D 445), cSt
Specification Limits
Typical Value
 
1.97
≤ 4.4
3.95
≤ 7.0
6.5
Viscosity at 100°C (ASTM D 445), cSt
Specification Limits
Typical Value

0.93
≤ 1.5
1.60
≤ 2.1
2.20
Pour Point (ASTM D 97),
°F
<-100<-90<-85
Total Acid Number (ASTM D 664), mg KOH/g fluid
Specification Limits
Typical Value
≤ To 0.15
0.02
≤ 0.10
0.01
≤ 0.05
0.03
Moisture Content (Karl Fischer Titrator), ppm Specification Limits
≤ 150

≤ 100

≤ 150

 

 
Features & Benefits

COOLANOL is specifically intended for liquid circulating systems (dynamic liquid phase) found in high-density electronic packages in aerospace and military applications. Such systems are in wide use because of their excellent heat transfer efficiency. COOLANOL should not be used in vaporizing (boiling liquid) systems.

  • Superb High and Low Temperature Stability
  • Versatile and Simple to Handle
  • Manufactured under Stringent Quality Control
  • Oxidative Stability
  • Radiation Resistance
  • Lubricity

 

Applications

To select the proper COOLANOL fluid for a given application, first determine the upper and lower temperature parameters of the application.

  1. Coolanol 20:  (-101 - 149 °C / -150 – 300 °F)
  2. Coolanol  25R:  (-54 - 149 °C / -65 – 300 °F)
  3. Coolanol OS-59: (-54 – 288 °C / -65 – 550 °F)

 

 

Specs

MIL-C-47220B (May 1985) military specification, though inactive, distinguishes five fluid types. Fluid types III and IV represent products from the family of COOLANOL fluids, as shown in Table 1.

Table 1

MIL-C-47220B Fluid TypeApplicable Fluid
Type IIICOOLANOL OS-59
Type IVCOOLANOL 25R

 

Certain COOLANOL fluids relate to military contractor specifications as shown in Table 2

Table 2

OEM SpecificationsApplicable Fluids
Boeing (McDonnell-Douglas) 
MMS-652, Rev ACOOLANOL 25R
Grumman GM 6003A, Amendment-No 1 
Type ICOOLANOL 25R
Hughes Aircraft HMS 20-1458 Rev ECOOLANOL 25R
Northrop MS-138, Rev ACOOLANOL 25R

 

Tech Details

TYPICAL PHYSICAL AND CHEMICAL PROPERTIES*
Mobil COOLANOL Dielectric Heat Transfer Fluids

Property (Test Method), UnitsCOOLANOL 20COOLANOL 25RCOOLANOL OS-59
Fluid Operating Temperature Range per MIL-C-47220BNone appliesType IVType III
Appearance (Visual)Clear, light amber liquidClear, colorless to light amber liquidClear, colorless liquid
Specific Gravity (25/25°C, ASTM D 4052)
Specification Limits
Typical Value
0.884-0.890
0.887
0.890-0.900
0.893
0.879-0.882
0.880
Viscosity at -65°F (ASTM D 445),cSt
Specification Limits
Typical Value
≤ 60
44
≤ 275
240
≤1500
1400
Viscosity at 0°F (ASTM D 445), cSt
Typical Value82363
Viscosity at 100°F (ASTM D 445), cSt
Specification Limits
Typical Value
1.9-2.2
2.05
≤ 4.5
4.15

6.9
Viscosity at 210°F (ASTM D 445), cSt
Specification Limits
Typical Value
0.88-1.0
0.94
≤ 1.53
 1.62
 
2.25
Viscosity at 40°C (ASTM D 445), cSt
Specification Limits
Typical Value
 
1.97
≤ 4.4
3.95
≤ 7.0
6.5
Viscosity at 100°C (ASTM D 445), cSt
Specification Limits
Typical Value

0.93
≤ 1.5
1.60
≤ 2.1
2.20
Pour Point (ASTM D 97),
°F
<-100<-90<-85
Total Acid Number (ASTM D 664), mg KOH/g fluid
Specification Limits
Typical Value
≤ To 0.15
0.02
≤ 0.10
0.01
≤ 0.05
0.03
Moisture Content (Karl Fischer Titrator), ppm Specification Limits
≤ 150

≤ 100

≤ 150

 

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