company tower banner
Multitherm Company Logo

MultiTherm® IG-1

1 of 4 products in this brand
MultiTherm® IG-1 is a highly refined; hydrotreated mineral oil designed primarily for use in closed loop heat transfer systems. MultiTherm IG-1® is designed for use in systems that are equipped with expansion tanks, and it is recommended to have pressure relief valves and an inert gas blanket on the system. In properly designed systems it will provide troublefree, long lasting service.

Product Type: Heat Transfer Fluid

Features: Corrosion Resistant, Cost Effective, Disposable, Durable, Excellent Lubricity, High Flash Point, Improved Heat Transfer Efficiency, Non-Toxic, Service Life Extension, Thermally Conductive, Very Low Vapor Pressure

Chemical Family: Alkanes, Mineral Oils

  • TypeDocument Name
View All Documents

Knowde Enhanced TDS

Identification & Functionality

Base Oil Type
Chemical Family

Features & Benefits

Product Highlights

Closed Loop Systems

  • MultiTherm IG-1® is designed for use in liquid-phase heat transfer systems, which are “closed” to the atmosphere. Where practical, it is recommended that there be an inert gas blanketing the systems expansion tank to guard against exposure to air and water to reduce the need to change-out the fluid prematurely.
  • MultiTherm IG-1®‚ heat transfer fluid is designed with a maximum film temperature of 600°F / 316°C and a maximum bulk temperature of 550°F / 288°C.

Low Vapor Pressure
MultiTherm IG-1® heat transfer fluid has a low vapor pressure compared to other economical heat transfer fluids. This is important because fluid boil-off is an issue in open systems. The rate of boil-off of a heat transfer fluid is dependent on the fluid vapor pressure. The higher the vapor pressure, the greater the rate of fluid boil-off.

High Flash Point
MultiTherm IG-1® also offers the benefit of having a high flash point of 442°F / 228°C compared to other economical heat transfer fluids on the market.

Easy Disposal
MultiTherm IG-1® is generally simpler to dispose of than many synthetic thermal liquids. Used, uncontaminated fluid can be treated as a used lubricating oil, and handled through a local waste oil processor. Check with all applicable regulations in advance.

Benefits of MultiTherm IG-1®
  • Economical
  • Excellent Thermal Conductivity at high temperatures
  • Resists Thermal Breakdown in closed-loop systems
  • Long Service Life and Excellent performance in closed-loop systems
  • Non-Corrosive, Non-Toxic and Non-Hazardous material

Applications & Uses

Applications

MultiTherm IG-1® is an excellent heat transfer fluid used in numerous industries that are looking for an economical heat transfer fluid for various manufacturing processes. Common applications for MultiTherm IG-1® heat transfer equipment used in manufacturing of asphalt shingles and roofing compounds, road-paving equipment, die-casting, paper and particle board.

Properties

Appearance
Clear, Liquid, Colorless
Physical Properties
ValueUnitsTest Method / Conditions
Pour Point-15.0°CASTM D97
Density (15°C)0.8624g/ml-
Fire Point228.0°CASTM D92
Fire Point263.0°CASTM D92
Autoignition Temperature354.0°CASTM D2155
Atmospheric Boiling Point (10%)374.0°CASTM D1160
Film Temperaturemax. 316°C-
Recommended Bulk Temperaturemax. 288°C-
Molecular Weight440.0--
Pumpable, Temperature (2000cP)-18.0°C-
Heat of Vaporization (316°C)977.0kJ/kg-
Heat of Combustion42.4MJ/kg-
Coefficient of Thermal Expansion0.00098°C
Specific Gravity (37.8°C)0.852--
Viscosity (37.8°C)54.0cSt-
Specific Heat (37.8°C)0.466Btu/(lb-°F)-
Thermal Conductivity (37.8°C)0.0795Btu/(h-ft-°F)-
Chemical TypeWhite Mineral Oil

Storage & Handling

Physical Properties
Temperature Specific Gravity Viscosity Specific Heat Thermal Conductivity Vapor Pressure
°C cSt Btu/(lb-°F) Btu/(h-ft-°F) mm Hg
-6.7 0.881 624 0.419 0.0815
10 0.869 229 0.442 0.0808
37.8 0.852 54 0.466 0.0795
65.6 0.836 16.3 0.49 0.0783
93 0.821 7.7 0.514 0.077 0.0031
121.1 0.805 4.29 0.538 0.0757 0.015
148.8 0.791 2.84 0.563 0.0745 0.113
176.7 0.776 2.01 0.587 0.0733 0.85
204.4 0.762 1.52 0.611 0.072 2.6
232.2 0.747 1.21 0.635 0.0708 10.9
260 0.733 0.988 0.659 0.0695 30
287.8 0.72 0.83 0.684 0.0683 70
315.6 0.706 0.707 0.705 0.0672 156

Temperature Density Viscosity Specific Heat Thermal Conductivity Vapor Pressure
°C g/cc m2/s cSt J/(kg-°K) W/(m-°K) mm Hg
-10 0.882 1272 1818 0.1363
-20 0.884 3030 1742 0.1416
-10 0.879 1734 1777 0.1412
0 0.873 438 1812 0.1407
10 0.868 229 1861 0.1398
20 0.861 110 1884 0.1388
40 0.85 39.9 1959 0.1359 0.000049
60 0.839 18.6 2031 0.1359 0.0002
80 0.827 10.3 2102 0.1345 0.00096
100 0.816 6.4 2177 0.1328 0.00415
120 0.805 4.36 2248 0.1312 0.012
140 0.794 3.17 2324 0.1296 0.065
160 0.783 2.43 2395 0.1281 0.32
180 0.773 1.93 2470 0.1265 0.96
200 0.763 1.58 2541 0.125 2.1
220 0.752 1.33 2612 0.1234 4.5
240 0.742 1.14 2688 0.1218 15
260 0.732 0.988 2759 0.1203 30
280 0.722 0.868 2834 0.1187 54
300 0.713 0.77 2906 0.1172 95
320 0.708 0.689 2981 0.1156 195