MultiTherm 503 ®

MultiTherm 503 ® is a high quality non-toxic heat transfer fluid for use in closed loop liquid phase temperature control systems for heating and cooling within the same loop from 10°F to 500°F.

MultiTherm 503 ® has been successfully used in a variety of applications. In the Chemical Processing Industry, it has been used in temperature control systems for heating and cooling batch reactor systems. In the Plastics Industry, MultiTherm 503 has been used for hot/cold cycling of molded products and to improve the versatility of laminating lines.

MultiTherm 503 ® provides you with a non-toxic, low pressure alternative to synthetic chemical based heat/cool fluids for your temperature control system.

MultiTherm 503 ® meets the requirements for FDA regulations 21CFR178.3620(b) non-food articles in contact with food.

Reduce Equipment Costs

Use in Low Pressure Temperature Control Systems

Fluids that have high vapor pressure can require complete system pressurization to prevent fluid boiling and pump cavitation. Pressure control systems on expansion tanks and pressure rated piping and equipment can add significantly to equipment costs. In addition, electrical classifications and system gasketing requirements are also affected by low flash point fluids. MultiTherm 503 can be used in standard low pressure fluid heating systems. It has low vapor pressure and high flashpoint (310°F).

MultiTherm 503 Physical Characteristics
Chemical Type	Paraffinic Hydrocarbon
Appearance	Bright, Clear, Colorless
Odor	None
Pour Point, ASTM D97	<-76°F (<-60°C)
Density @ 16°C	6.64 lb/gal
Flash Point, COC, ASTM D92	310°F (154°C)
Fire Point, COC, ASTM D92	345°F (174°C)
Atmospheric Boiling Point (10%) ASTM D1160	616°F (324°C)
Average Molecular Weight	272
Maximum Film Temperature	550°F (288°C)
Maximum Recommended Operating Temperature	500°F (260°C)
Pumpable, Centrifugal @ 2000 centipoise	-73°F (-58°C)
Heat of Vaporization @ 500°F	106 Btu/lb (247 kJ/kg)
Heat of Combustion	20,340 Btu/lb (47.3 MJ/kg)
Coefficient of Thermal Expansion	0.00051/°F (0.00092/°C)

Efficient Heat Transfer

MultiTherm 503 physical properties (viscosity, density, thermal conductivity and specific heat) result in higher fluid film coefficients than many other fluids. As a result, heat loads can be achieved with lower flow rates, smaller heat exchangers or lower approach temperatures.

Lower Expenese

Reduced Maintenance Costs

MultiTherm 503 can help reduce system maintenance costs. It has excellent metal coating properties and lubricity, which reduce wear on moving parts and protects surfaces from corrosion. Chemically inert, it will not attack gaskets and seals. And since MultiTherm 503 operates in low pressure equipment, there are no pressure control or purging systems to maintain.

Minimize Leak Testing

Fluids with high vapor pressure can require extensive leak testing prior to start-up to prevent fluid loss during operation. This can add significantly to total maintenance down time. With MultiTherm 503, system pressure is limited to pump circulating pressure so leak testing requirements are significantly reduced.