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Technical Data Sheet Therminol® Vp-1 Heat Transfer Fluid

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TECHNICAL DATA SHEET

THERMINOL® VP-1 HEAT TRANSFER FLUID


Therminol VP-1 heat transfer fluid is an ultra-high temperature synthetic heat transfer fluid designed to meet
the demanding requirements of vapor phase systems or liquid phase systems.
Performance Benefits
 Superb Heat Transfer Properties – Therminol VP-1 is a synthetic heat transfer fluid which combines
exceptional thermal stability and low viscosity for efficient, dependable, uniform performance in a wide
optimum use range of 12°C to 400°C (54°F to 750°F). Therminol VP-1 has the highest thermal stability
of all organic heat transfer fluids.
 Low Viscosity – Therminol VP-1 has a low viscosity to 12°C (54°F). Because of its crystallization point
of 12°C (54°F), this fluid may require tracing in colder climates to avoid operational problems.
 Vapor Phase Heat Transfer Fluid – Therminol VP-1 is a eutectic mixture of diphenyl oxide (DPO) and
biphenyl. It can be used as a liquid heat transfer fluid or as a boiling-condensing heat transfer medium
up to its maximum use temperature. It is miscible and interchangeable (for top-up or design purposes)
with other similarly constituted diphenyl-oxide (DPO)/biphenyl fluids.
 Precise Temperature Control – Due to its ability to operate as a vapor phase heat transfer fluid,
Therminol VP-1 is excellent for use in heat transfer fluid systems requiring very precise temperature
control.

Typical Properties

Appearance Clear, water white liquid

Composition Biphenyl/diphenyl oxide (DPO) eutectic mixture

Maximum bulk temperature 400°C (750°F)

Maximum film temperature 430°C (800°F)

Normal boiling point 257°C (495°F)

Crystallizing point 12°C (54°F)

Flash point, COC (ASTM D-92) 124°C (255°F)

Flash point, PMCC (ASTM D-93) 110°C (230°F)

Autoignition temperature (ASTM E-659) 601°C (1114°F)

Autoignition temperature (DIN 51794) 621°C (1150°F)

Coefficient of thermal expansion at 200°C 0.000979/°C (0.000544/°F)


Heat of vaporization at max. use temperature 206.0 kJ/kg (88.7 Btu/lb)

Kinematic viscosity at 100°C (ASTM D-445) 0.99 mm2/s (cSt)

Kinematic viscosity at 40°C (ASTM D-445) 2.48 mm2/s (cSt)

Liquid density at 15°C (ASTM D-4052) 1068 kg/m3 (8.91 lb/gal)

Liquid density at 25°C (ASTM D-4052) 1060 kg/m3 (8.85 lb/gal)

Total acidity (ASTM D-664) <0.2 mg KOH/g

Average molecular weight 166

Pseudocritical temperature 499°C (930°F)

Pseudocritical pressure 33.1 bar (480.0 psia)

Pseudocritical density 327 kg/m3 (20.4 lb/ft3)

Sulfur content, ppm (ASTM D-7691) <10 ppm

Copper corrosion (ASTM D-130) <<1a

Moisture content, maximum (ASTM E-203) 300 ppm

Volume contraction upon freezing, % 6.27%

Volume expansion upon melting, % 6.69%

Surface tension in air at 25°C 36.6 dynes/cm

Dielectric constant @ 23°C (ASTM D-924) 3.35

 
Notice: Although the information and recommendations set forth herein are presented in good faith, Eastman Chemical Company and its wholly owned subsidiary
Solutia Inc. make no representations or warranties as to the completeness or accuracy thereof. You must make your own determination of their suitability and
completeness for your own use, for the protection of the environment, and for the health and safety of your employees and purchasers of your products. Nothing
contained herein is to be construed as a recommendation to use any product, process, equipment, or formulation in conflict with any patent, and we make no
representations or warranties, express or implied, that the use thereof will not infringe any patent. NO REPRESENTATIONS OR WARRANTIES, EITHER
EXPRESS OR IMPLIED, OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR OF ANY OTHER NATURE ARE MADE HEREUNDER WITH
RESPECT TO INFORMATION OR THE PRODUCT TO WHICH INFORMATION REFERS AND NOTHING HEREIN WAIVES ANY OF THE SELLER'S
CONDITIONS OF SALE.

Safety Data Sheets providing safety precautions that should be observed when handling and storing our products are available online or by request. You should
obtain and review available material safety information before handling our products. If any materials mentioned are not our products, appropriate industrial
hygiene and other safety precautions recommended by their manufacturers should be observed.

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