Therminol VP-3 Vapor
Phase/Liquid Phase
Heat Transfer Fluid*
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View MSDS
Product Bulletin
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Therminol VP-3 heat transfer fluid is a synthetic heat transfer fluid that was specially developed to allow vapor phase heat transfer at lower temperatures than are practical with traditional diphenyl oxide (DPO)/biphenyl constituted fluids like Therminol VP-1. Performance features of Therminol VP-3 include:
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- Operating Range – Therminol VP-3 has a normal boiling point of 243°C (469°F), 14°C (26°F) below the normal boiling point of Therminol VP-1. Laboratory thermal stability testing suggests a maximum continuous operating temperature of 330°C (625°F) in the liquid or vapor phase. A crystallization point of 2.4°C (36°F) makes Therminol VP-3 easy to handle and may eliminate the need for costly heat tracing in moderate climates.
- Composition - Therminol VP-3 is a mixture of approximately 90% phenylcyclohexane and 10% bicyclohexyl. It contains virtually no biphenyl. The odor of Therminol VP-3 is milder than other vapor phase organic heat transfer fluids.
- Combustibility – With an open cup flash point of 104°C (219°F), Therminol VP-3 is a Class III b combustible fluid under the definitions of the NFPA (National Fire Prevention Association). As with any other combustible material, proper system design and operation are important to safe operation. Leaks of vapor could condense into a stable mist suspension that may be explosive in certain concentrations in air.
Therminol VP-3 is used in a wide variety of industries, such as:
- Fibers/Nylon Manufacture
- Chemicals
- Specialty Heat-Sensitive Polymers
For more information on Therminol VP-3 systems and applications
e-mail us or contact the Therminol Technical Service Hotline at 1-800-433-6997.
Click here to download the product bulletin containing detailed physical and transport properties for Therminol VP-3.
Therminol® VP-3
Vapor Phase/Liquid Phase Heat Transfer Fluid*
Liquid Use Range 2.4 °C to 330 °C (36 °F to 625 °F)
Vapor Use Range 243 °C to 330 °C (469 °F to 625 °F)
| Composition |
Phenylcyclohexane (90% min) + bicyclohexyl (<10%) |
| Appearance |
Above 2.4°C (36°F) clear, sediment-free liquid |
| Max. Bulk Temperature |
330°C (625°F) |
| Max. Film Temperature |
357°C (675°F) |
| Kinematic Viscosity @ 40 °C |
2.04 cSt (mm²/s) |
Density @ 40 °C |
7.70 lb/gal (923 kg/m³) |
| Flash Point, Open Cup |
104°C (219°F) |
| Fire Point |
113°C (235°F) |
| Autoignition Temperature |
351ºC (663ºF) |
| Crystallization Point |
2.4ºC (36ºF) |
| Boiling Point @ 1 atm |
243ºC (469ºF) |
| Coefficient of Thermal Expansion at 200 ºC |
0.001204/ºC |
| Moisture Content |
<150 ppm |
| Average Molecular Weight |
161 |
| Specific Gravity (60ºF/60ºF) |
0.936 |
| Surface Tension @ 25°C |
43.2 dynes/cm |
| Pseudocritical Temperature |
406ºC (764ºF) |
| Pseudocritical Pressure |
38.5 bar (558.4 psia) |
| Pseudocritical Density |
352 kg/m³ (22.0 lb/ft³) |
*Patent Pending.
NOTICE: Although the information and recommendations set forth herein (hereinafter "Information") are presented in good faith and believed to be correct as of the date hereof, Solutia makes no representations or warranties as to the completeness or accuracy thereof. Information is supplied upon the condition that the persons receiving same will make their own determination as to its suitability for their purposes prior to use. In no event will Solutia be responsible for damages of any nature whatsoever resulting from the use of or reliance upon Information or the product to which Information refers. Nothing contained herein is to be construed as a recommendation to use any product, process, equipment or formulation in conflict with any patent, and Solutia makes no representation or warranty, 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.
Therminol® is a registered trademark of Solutia Inc.
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