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Dynalene MS-1 is a molten salt heat transfer fluid which can be used in hot bath or solar thermal applications at very high temperatures. MS-1 can safely withstand temperatures up to 565°C (1050°F), higher than most commercially available heat transfer fluids on the market today.

Product Type: Heat Transfer Fluid

Application Area: Solar Cell

Compatible Substrates & Surfaces: Copper, Metal, Stainless Steel, Steel

Features: Corrosion Resistant, Cost Effective, Good Thermal Conductivity, Good Thermal Stability, High Temperature Performance, Low Viscosity, Odorless, Very Low Vapor Pressure

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Identification & Functionality

Features & Benefits

Features

Dynalene’s molten salt fluids have excellent thermophysical properties in the liquid state, such as low viscosity, high heat capacity, and high thermal conductivity. The high energy density of Dynalene’s molten salts provides long-term heat storage for any high-temperature application. Our heat transfer salts provide excellent corrosion resistance with stainless and alloy steels and exhibit minimal vapor pressures even near peak operating temperatures. This eliminates the need for expensive materials and high-pressure components, in addition to increasing the safety of your system.

Thermal Stability

The maximum operating temperature of MS-1 is 565°C . Above this temperature the fluid will slowly evolve into non-toxic, inert gasses with very low vapor pressures. Prolonged exposure to temperatures higher than the recommended maximum operating temperature may lead to precipitate formation.

Corrosion Performance

Dynalene MS-1 has undergone repeated corrosion testing. Stainless steel samples were immersed in the salt for 36 days at 550°C (1022°F) and then evaluated for mass loss. The recorded corrosion rates for SS-304 and SS-316 are 21 µm/year and 16 µm/year, respectively.

Material Compatibility

Dynalene MS-1 can be used safely with carbon steel up to 400°C (752°F). Above this operating temperature, stainless steel, Inconel, or other corrosion-resistant alloys are recommended. Copper and bronze can be used up to 300°C (572°F).

Benefits
  • High thermal stability
  • High energy density
  • Low vapor pressure
  • Cost-effective
  • Available worldwide
  • Proven performance

Applications & Uses

Application Area
Compatible Substrates & Surfaces
Applications
  • Solar heat transfer fluid
  • Thermal storage medium
  • Environmental chambers
  • Hot bath systems
  • High-temperature reaction applications
  • Preheating natural gas lines
  • Metal alloy heat treatments

Properties

Color
Physical Form
Appearance
Salt mixture, White solids
Odor
None
Typical Properties
ValueUnitsTest Method / Conditions
Recommended Temperature Range250 - 565°C
Freezing Point225.0°C
Max Operating Temperature565.0°C
Latent Heat117.0J/g
Thermal Conductivity0.5W/mK
Specific Heat1.4J/gK
Density1.9g/cm3
Viscosity4.0cP
Freezing Contraction3.0%
Properties
Temperature Viscosity Thermal
Conductivity
Specific
Heat
Density
°C mPa·s W/m·K kJ/kg·K kg/m^{3}
100 null null 1.07 2030
150 null null 1.19 1990
200 null null 1.22 1960
250 5.9 0.49 1.39 1930
300 4 0.5 1.4 1900
350 3.1 0.51 1.41 1870
400 2.4 0.52 1.42 1840
450 1.9 0.53 1.44 1820
500 1.7 0.54 1.45 1790
550 1.3 0.55 1.45 1760

Regulatory & Compliance

Certifications & Compliance

Packaging & Availability

Quantity & Availabiliy

Dynalene MS products are offered in 16, 50, 220, and 550-lb containers, and 2000 to 3000-lb super sacks.