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HELISOL® 10A is a linear, non-reactive polydimethylsiloxane with a viscosity of approximately 10 mm²/s. Its unique chemical structure sets it apart from organic materials like mineral oils, giving it exceptional properties. HELISOL® 10A is a clear, odorless, and colorless liquid.

Product Type: Heat Transfer Fluid

Features: Anti-Fouling, Good Thermal Stability, Heat Resistance, High Linearity, Long Shelf Life, Low Density, Low Pour Point, Low Viscosity, Non Corrosive, Odorless, Very Good Heat Resistance, Wide Temperature Operating Range

Chemical Family: Silicones

Technical Data Sheet

Knowde Enhanced TDS

Identification & Functionality

Chemical Family
Chemical Structure

HELISOL® 10A - Chemical Structure

Features & Benefits

Specific Features
  • Fluid
  • Good heat stability
  • Heat resistant
  • Silicone Fluid
  • Stable upon heating

Applications & Uses

Markets
Applications

Renewable Energies

Application Details
  • Heat transfer fluid in closed systems under inert conditions from -40 °C up to 425 °C.
  • Recommended use in liquid phase.

Properties

Physical Form
Odor
Odorless, Musty odor
Appearance
Clear colourless liquid
Insoluble in
Water
Typical Properties
ValueUnitsTest Method / Conditions
density (at 25°C)0.93g/cm³DIN 51757
Maximum Permitted Film Temperature450°C
Flash Point175°CPensky-Marten
Maximum Permitted Working Temperature425°C
Ignition Temperature379°CEN 14522
Kinematic Viscosity (at 25°C)9 - 11 mm²/sDIN 51562
pHapprox. 7Specific method
Properties
  • High heat resistance
  • Low pourpoint
  • Lower density than water
  • Low viscosity
  • Long life
  • Low fouling potential
  • Noncorrosive
  • No hazard classification

Regulatory & Compliance

Certifications & Compliance

Safety & Health

Safety Notes
  • Reactivity; Chemical stability: Possibility of hazardous reactions No hazardous reactions known if properly stored. When it is used as intended (up to 425 °C), amounts (< 25%) of a mixture of D-cyclic siloxanes (including octamethylcyclotetrasiloxane (D4, CAS 556-67-2) and decamethylcyclopentasiloxane (D5, CAS 541-02-6)) are formed. This depresses the flash point and increases the vapor pressure.
  • Conditions to avoid: Permeation of oxygen and water or any contamination at operating temperature.
  • Incompatible materials: None known.
  • Hazardous decomposition products : When it is used as intended (up to 425 °C), it has been found that in the absence of oxygen and after relatively long operating times, extremely small quantities of methane, hydrogen and volatile silanes (tetramethylsilane, CAS 75-76-3 and trimethylsilane, CAS 993-07-7) may be produced, which further depress the flash point.

Packaging & Availability

Country Availability
Regional Availability
  • Africa
  • Asia
  • Europe
  • Latin America
  • Middle East
  • North America
  • Oceania
Packaging Information
  • 0.5 kg bottle
  • 5 kg can
  • 25 kg drum
  • 190 kg drum
  • 950 kg IBC

Storage & Handling

Storage Information

Maximum temperature allowed during storage and transportation: 50°C.