DIPHYL®

Diphyl® consists of an eutectic mixture of diphenyl oxide and biphenyl. Diphyl® is a high temperature heat transfer fluid for the application in liquid and vapour phase. For example it is used as heat transfer fluid in the manufacture plant of fibres and plastics and in the chemical industry. Diphyl® is also used for production of solar process heat and electricity in concentrated solar power plants.

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Product Description

DIPHYL® is a high-temperature heat transfer fluid consisting of a eutectic mixture of diphenyl oxide and biphenyl. Designed for use in both liquid- and vapor-phase systems, DIPHYL® offers excellent thermal stability and efficient heat transfer performance for demanding industrial processes.

The product is widely used in applications requiring precise temperature control and reliable heat transfer at elevated temperatures. Its proven performance and long service life make it a trusted solution across a broad range of industries, supporting efficient operation and process reliability.

DIPHYL® is particularly suitable for heat transfer systems in the production of fibers, plastics, and chemicals, where consistent thermal performance is essential. In addition, it is used in concentrated solar power (CSP) plants for the generation of solar process heat and electricity, contributing to efficient and sustainable energy production.

Key Benefits

Eutectic mixture of diphenyl oxide and biphenyl
A clear, colorless to yellowish liquid
Suitable for both liquid-phase and vapor-phase heat transfer applications
Excellent thermal stability at elevated temperatures
Efficient and reliable heat transfer performance
Proven technology for demanding industrial processes
Supports precise temperature control and process efficiency
Suitable for conventional industrial and renewable energy applications

Brand

DIPHYL®

Molecular Formula

C12 H10 . C12 H10 O

Molar weight

154.2

Material number

57697000

CAS (CAS Number)

Mixture

Manufacturing of plastics

Heat transfer medias (textile industrie)

Textile auxiliaries

Optical brighteners

Manufacturing of dyestuffs

Heat transfer medias

Diphenyl/Diphenylether mixture

Diphenylether/Diphenyl 3:1

Diphenyloxide/Diphenyl eutectic mixture (3:1)

Diphyl

Mixture of CAS# 101-8-8 and CAS# 92-52-4

Mixture of EC-No. 202-981-2 and EC-Nr. 202-163-5

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