Therminol VP-3 Heat Transfer Fluid

Product description

Therminol VP3 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 Benefits

  • Easy to Handle—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 recommended continuous operating temperature of 330°C (625°F) in the liquid or vapor phase. A crystallization point of 2°C (36°F) makes Therminol VP-3 easy to handle and may eliminate the need for costly heat tracing in moderate climates.
  • Low Odor—The odor of Therminol VP-3 is milder than other vapor phase organic heat transfer fluids. Therminol VP-3 is a mixture of phenylcyclohexane and bicyclohexyl. It contains virtually no biphenyl.
  • Class III b 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 U.S. National Fire Protection Association (NFPA) . 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.

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Therminol VP-3 Heat Transfer Fluid


  • Extruding
  • Fibers
  • HTF - fine chemicals
  • Polyamide
  • Polyester (PET)
  • Specialty and batch chemical production
  • Specialty chemicals
  • Specialty heat-sensitive polymers

Key attributes

  • Class III b Combustibility
  • Easy to Handle
  • Low Odor

Regulatory information and data sheets

Product availability

Check with local sales office to determine exact availability by country. Orders subjected to minimum order quantity.