GALDEN® HT 80

Econtrol Devices offers GALDEN® HT 80, a perfluoropolyether (PFPE) dielectric heat transfer fluid from the GALDEN HT range by Solvay/Syensqo.

GALDEN HT 80 is a colorless, odorless, nonflammable liquid intended for industrial heat transfer applications. It has a boiling point of 80°C, a density of 1.69 g/cm³, and a kinematic viscosity of 0.57 cSt, as reported in the manufacturer's Technical Data Sheet.

The GALDEN HT range consists of inert, dielectric heat transfer fluids with boiling points from 55°C to 270°C. The product range is designed for demanding industrial applications, including semiconductor manufacturing, chemical processing, pharmaceutical operations, vapor phase heating, transformer and supercomputer cooling, recirculating chillers, and nuclear industry applications.

The manufacturer identifies excellent thermal and chemical stability, good heat transfer performance, and material compatibility as key characteristics of GALDEN HT PFPE fluids.

Key Features of GALDEN HT 80

• PFPE Heat Transfer Fluid: Part of the GALDEN HT perfluoropolyether range.

• Dielectric Properties: Developed for industrial heat transfer applications.

• Boiling Point: 80°C.

• Nonflammable: Confirmed in the manufacturer's Safety Data Sheet.

• Chemical and Thermal Stability: Identified as characteristics of the GALDEN HT range.

• Density: 1.69 g/cm³.

• Kinematic Viscosity: 0.57 cSt.

• Pour Point: -110°C.

• Thermal Conductivity: 0.065 W/m·K.

• Specific Heat: 0.23 cal/g·°C.

• Heat of Vaporization: 17 cal/g at the boiling point.

• Dielectric Strength: 40 kV at a 2.54 mm gap.

• Dielectric Constant: 1.89.

• Colorless and Odorless: Confirmed in the Safety Data Sheet.

• Industrial Use: Identified as a heat transfer medium in the manufacturer's Safety Data Sheet.

Applications of GALDEN HT 80

The manufacturer's Technical Data Sheet identifies the following application categories for the GALDEN HT PFPE product range.

1. Semiconductor Manufacturing

GALDEN HT fluids are used in industrial heat transfer applications involving semiconductor manufacturing.

The manufacturer identifies dielectric properties, thermal stability, and heat transfer performance as characteristics of the product range.

2. Chemical Industry

The GALDEN HT range is intended for heat transfer applications within the chemical industry.

3. Pharmaceutical Industry

The manufacturer includes pharmaceutical industry applications among the intended uses of GALDEN HT fluids.

Application-specific suitability and applicable process requirements should be evaluated before use.

4. Vapor Phase Heating

Vapor phase heating is listed among the industrial application areas for GALDEN HT fluids.

5. Transformer and Supercomputer Cooling

The manufacturer's product literature identifies transformer and supercomputer cooling as applications of the GALDEN HT range.

6. Recirculating Chillers

GALDEN HT fluids are identified for use in industrial systems involving recirculating chillers.

7. Nuclear Industry

The manufacturer includes nuclear industry applications among the listed application categories for GALDEN HT heat transfer fluids.

Suitability for a particular system must be established according to the manufacturer's guidance.

Technical Specifications of GALDEN HT 80

The following values are taken from the HT80 column on page 3 of the GALDEN HT PFPE Technical Data Sheet.

These are typical manufacturer-reported properties, determined at 25°C unless otherwise specified. They are not guaranteed product specifications.

Chemical Composition

According to the manufacturer's Safety Data Sheet, Version 4.00, dated January 15, 2026, GALDEN HT 80 is a perfluorinated polyether substance.

The Safety Data Sheet identifies GALDEN HT 80 as a substance rather than a mixture. It also states that the specific chemical identity and/or exact composition percentage has been withheld as a trade secret.

Heat Transfer Performance

Thermal Characteristics

The manufacturer's Technical Data Sheet reports the following thermal properties for GALDEN HT 80:

• Boiling Point: 80°C

• Pour Point: -110°C

• Heat of Vaporization: 17 cal/g

• Specific Heat: 0.23 cal/g·°C

• Thermal Conductivity: 0.065 W/m·K

• Coefficient of Thermal Expansion: 0.0011 cm³/cm³·°C

Temperature-Dependent Viscosity

Page 2 of the manufacturer's Technical Data Sheet includes a graph showing how kinematic viscosity changes with temperature across the GALDEN HT product range.

GALDEN HT 80 has a reported kinematic viscosity of 0.57 cSt at 25°C.

Thermal and Chemical Stability

The manufacturer identifies excellent thermal and chemical stability as features of GALDEN HT PFPE fluids.

The Safety Data Sheet also confirms that GALDEN HT 80 is stable under recommended storage conditions.

Temperature Considerations

The GALDEN HT product range includes fluids with boiling points from 55°C to 270°C.

For GALDEN HT 80 specifically, the reported boiling point is 80°C and the pour point is -110°C.

The Safety Data Sheet reports a decomposition temperature above 290°C. This is safety information and should not be interpreted as a recommended operating temperature for the HT 80 grade.

Electrical Properties

GALDEN HT 80 is identified as a dielectric heat transfer fluid.

The manufacturer's Technical Data Sheet reports:

These are typical electrical properties reported by the manufacturer.

Material Compatibility

The manufacturer's Technical Data Sheet includes a compatibility table on page 3 for the GALDEN HT PFPE fluid range.

Compatible Metals

The manufacturer lists:

• AISI 316

• Copper

• Brass

• Iron

• Nickel

• Aluminum

• Stainless Steel

• Bronze

Compatible Plastics

The product-range compatibility table identifies:

• Low-Density Polyethylene

• Polypropylene

• Polycarbonate

• ABS Copolymer

• Polyphenylene Oxide

• PET

• POM

• PTFE

• PVC

• PMMA

Compatible Elastomers

The manufacturer lists:

• Butyl Rubber

• NBR

• EPDM

• Natural Rubber

• Silicone Rubber

• Fluorosilicone

Compatibility Considerations

The materials listed above are taken from the GALDEN HT product-range compatibility table rather than an individual HT80-only test report.

Material suitability should be evaluated for the specific application and operating conditions.

Available Packaging Sizes

The supplied product screenshot lists the following packaging options:

Packaging availability should be confirmed when requesting a quotation.

Storage and Handling

GALDEN HT 80 is intended for industrial use only.

Storage Guidelines

The manufacturer's Safety Data Sheet recommends:

• Keep the product in properly labeled containers.

• Store away from heat and sources of ignition.

• Keep away from combustible materials.

• Keep away from incompatible substances.

• Glass and plastic materials are identified as suitable container materials.

Handling Precautions

• Ensure adequate ventilation.

• Use appropriate personal protective equipment.

• Avoid overheating to prevent thermal decomposition.

• Take measures to prevent electrostatic charge buildup.

• Clean and dry piping circuits and equipment before use.

• Ensure equipment is electrically grounded before transfer operations.

• Follow good industrial hygiene practices.

Safety Information

According to the manufacturer's Safety Data Sheet dated January 15, 2026, GALDEN HT 80 is not classified as hazardous under the OSHA Hazard Communication Standard (29 CFR 1910.1200).

The Safety Data Sheet also identifies GALDEN HT 80 as nonflammable and not explosive.

High-Temperature Precautions

The manufacturer's Safety Data Sheet reports a decomposition temperature above 290°C.

Exposure to fire or overheating may produce hazardous decomposition products, including:

• Gaseous Hydrogen Fluoride (HF)

• Fluorophosgene

Incompatible Materials

The manufacturer identifies the following incompatible materials:

• Alkali Metals

• Lewis Acids (Friedel-Crafts) above 100°C

• Aluminum and Magnesium in Powder Form above 200°C

Personal Protective Equipment

The Safety Data Sheet recommends:

• Chemical-resistant protective gloves

• Safety glasses with side shields

• Protective work clothing and safety shoes

• Appropriate respiratory protection when required

Tightly fitting safety goggles and a chemical-resistant apron are recommended when splashing may occur.

Environmental and Regulatory Information

Chemical Inventory Information

The manufacturer's Safety Data Sheet identifies GALDEN HT 80 on the following chemical inventories:

• United States TSCA Inventory

• Canadian Domestic Substances List

• Australian Inventory of Industrial Chemicals

• Korean Existing Chemicals Inventory

• China's Existing Chemical Substances Inventory

• Japanese Chemical Inventories

• Philippines Inventory of Chemicals and Chemical Substances

• New Zealand Chemical Substances Inventory

• Taiwan Chemical Substance Inventory

The Safety Data Sheet also provides conditions regarding Japanese importation and European REACH compliance.

Environmental Precautions

The manufacturer states that GALDEN HT 80 should not be released into the environment.

The product should not enter drains, watercourses, or soil.

The GALDEN HT PFPE Technical Data Sheet identifies zero ozone depletion potential as a characteristic of the broader product range.

No specific global warming potential value is provided for GALDEN HT 80 in the supplied documents.

Recycling and Disposal

The manufacturer's Safety Data Sheet provides disposal guidance for GALDEN HT 80.

Disposal Guidelines

• Do not discharge the fluid into sewers, soil, or bodies of water.

• Follow applicable waste management regulations.

• Incineration may be used where permitted by local regulations.

• Incineration facilities must include systems for neutralizing or recovering hydrogen fluoride.

• Empty containers may be landfilled where local regulations permit.

GALDEN HT 80 – Product Inquiries at Econtrol Devices

Econtrol Devices provides product information and quotation assistance for GALDEN® HT 80 Dielectric Heat Transfer Fluid.

For technical specifications, packaging information, safety documentation, or quotations, contact Econtrol Devices.

Safety Information: GALDEN HT 80 is intended for industrial use only. Although the Safety Data Sheet does not classify the product as hazardous under OSHA GHS, overheating can produce hazardous decomposition products. Review the manufacturer's current Technical Data Sheet, Safety Data Sheet, and product label before use.