RXSOL-81-1587-211 ORA100 Heat Transfer Fluid. 

RXSOL-81-1587-211 ORA100 Heat Transfer Fluid – Questions & Answers

Frequently Asked Questions

1. What is RXSOL-81-1587-211 ORA100 Heat Transfer Fluid?

RXSOL-81-1587-211 ORA100 is an inhibited ethylene glycol-based heat transfer fluid designed for efficient heat transfer and thermal management in industrial, HVAC, infrastructure and process-heating systems.

It combines ethylene glycol with performance additives and water to provide heat-transfer capability together with corrosion protection for compatible system components.

2. What is the main function of ORA100 Heat Transfer Fluid?

The primary function of ORA100 is to transfer and circulate heat efficiently through a closed or controlled thermal system.

It can be used where the system requires protection against freezing at low temperatures while maintaining effective heat transfer at elevated operating temperatures.

3. What is the base chemical of RXSOL ORA100 Heat Transfer Fluid?

RXSOL ORA100 is based on ethylene glycol.

The reference formulation for this type of inhibited fluid contains approximately:

• Ethylene Glycol: 91% by weight

• Performance additives and water: 9% by weight

The exact RXSOL commercial specification should always be confirmed from the current batch TDS/COA.

4. Is ORA100 Heat Transfer Fluid a ready-to-use heat transfer fluid?

ORA100 is supplied as a concentrated inhibited glycol heat-transfer fluid and may be diluted with suitable water according to the required freeze protection and system design.

The required concentration depends on:

• Minimum operating temperature

• Maximum operating temperature

• Required freeze protection

• System materials

• Corrosion protection requirements

• Water quality

The reference technical information recommends concentration ranges depending on the application; concentration should therefore be selected from the current RXSOL technical documentation rather than by using a universal dilution ratio. 

5. What is the recommended operating temperature range?

The reference product information indicates a recommended operating temperature range of approximately:

-50°C to +175°C

Actual system operating limits depend on concentration, equipment design, pressure, circulation conditions and the specific thermal system. 

6. What is the recommended concentration of ORA100 Heat Transfer Fluid?

For corrosion protection, the reference information recommends a minimum concentration of approximately 30% for the applicable system conditions.

Other technical documentation indicates that lower concentrations may be suitable for particular temperature ranges and applications. Therefore, the correct concentration should be calculated according to the required freezing point and system operating conditions. 

7. What is the freezing point of a 50% solution?

A 50% by volume solution in demineralized water has a reference freezing point of approximately:

-38°C

This value is a typical technical value and should not be treated as a universal specification for every RXSOL batch.

8. What is the appearance of ORA100 Heat Transfer Fluid?

RXSOL-81-1587-211 ORA100 is supplied as a clear/colorless liquid based on the referenced technical information.

9. What is the density of ORA100 Heat Transfer Fluid?

The reference technical data gives a typical density of approximately:

1.135 g/cm³ at 20°C

The acceptable commercial specification should be confirmed against the RXSOL batch COA. 

10. What is the pH of ORA100 Heat Transfer Fluid?

For a 50% volume solution in demineralized water, the reference pH is approximately:

7.6–8.2

This represents the typical technical value of the referenced inhibited glycol formulation. 

11. Does ORA100 ORA100 Heat Transfer Fluid provide corrosion protection?

Yes. ORA100 is an inhibited glycol-based heat transfer fluid, formulated with performance additives intended to provide corrosion protection in compatible thermal systems.

Particular attention is given to corrosion protection of aluminum alloys in the reference formulation. 

12. Can ORA100 ORA100 Heat Transfer Fluid be used with aluminum equipment?

ORA100 Heat Transfer Fluid is suitable for systems where corrosion protection of aluminum alloys is required, subject to compatibility with the complete system.

Before filling a new or existing installation, compatibility should be checked for:

• Aluminum

• Copper

• Steel

• Stainless steel

• Brass

• Elastomers

• Seals and gaskets

• Plastics

The system manufacturer's material-compatibility recommendations should also be followed.

13. Is ORA100 Heat Transfer Fluid compatible with hard water?

The reference formulation is designed to provide hard-water stability, allowing use with suitable local water where permitted.

However, demineralized or deionized water is generally preferable when preparing glycol solutions because water quality can significantly affect scale, corrosion and fluid life. 

14. Where can RXSOL ORA100 Heat Transfer Fluid be used?

Typical applications include:

• Process heating systems

• HVAC thermal systems

• Heat recovery systems

• Floor heating

• Snow-melting systems

• Heat pumps

• Renewable-energy thermal systems

• Wind-turbine systems

• Photovoltaic/PV inverter cooling systems

• Industrial heat-transfer systems

• Temperature-controlled process equipment

• Other closed-loop heating and cooling applications

The exact suitability should be confirmed according to the equipment manufacturer's requirements. 

15. Can ORA100 Heat Transfer Fluid be used in heat recovery systems?

Yes. Inhibited ethylene glycol heat-transfer fluids of this type are used in heat recovery applications where freeze protection and controlled thermal transfer are required.

16. Can ORA100 Heat Transfer Fluid be used in HVAC systems?

Yes. ORA100 can be considered for suitable HVAC heating/cooling circuits and other closed-loop thermal systems where an inhibited ethylene glycol fluid is specified.

System concentration should be selected according to the required freeze protection and operating temperature.

17. Can ORA100 Heat Transfer Fluid be used in heat pumps?

Yes. Inhibited ethylene glycol heat-transfer fluids are commonly used in heat-pump and ground-source thermal systems where freeze protection is required.

The fluid concentration should be selected according to the lowest expected system temperature.

18. Does ORA100 Heat Transfer Fluid prevent freezing?

ORA100 itself is a concentrated glycol-based heat-transfer fluid. When properly diluted, it lowers the freezing point of the circulating fluid.

The level of freeze protection depends directly on the final glycol concentration. A 50% volume solution in the referenced formulation has a typical freezing point around -38°C. 

19. Is ORA100 Heat Transfer Fluid water soluble?

Yes. Ethylene glycol is completely miscible with water, allowing the concentrate to be diluted to the required operating concentration.

For best system performance, use water of appropriate quality, preferably demineralized/deionized where system requirements call for it.

20. Can ORA100 Heat Transfer Fluid be mixed with another heat transfer fluid?

Mixing different heat-transfer products is not recommended without a compatibility assessment.

Different products can contain different:

• Glycol types

• Corrosion inhibitors

• Buffer systems

• Additives

• Stabilizers

Before topping up an existing system with ORA100, determine what fluid is already present and confirm compatibility.

21. Can ORA100 Heat Transfer Fluid be used in an existing thermal system?

Yes, subject to system compatibility and proper preparation.

Before filling, it is recommended to check:

1. Existing heat-transfer fluid

2. System cleanliness

3. Corrosion condition

4. Water quality

5. Pumps and seals

6. Expansion tank

7. Required freeze protection

8. Operating temperature

9. Fluid concentration

22. Should the old heat-transfer fluid be removed before using ORA100 Heat Transfer Fluid?

If the existing fluid is unknown, degraded, contaminated or chemically incompatible, the system should normally be drained, cleaned and appropriately flushed before introducing a new heat-transfer fluid.

Do not automatically mix ORA100 with an unidentified glycol or inhibitor package.

23. How should ORA100 Heat Transfer Fluid concentration be selected?

The concentration should be determined from the lowest expected operating temperature and required freeze protection, while also considering corrosion protection and heat-transfer efficiency.

For critical systems, concentration should be verified using an appropriate glycol concentration measurement method and maintained within the specified operating range.

24. What are the benefits of RXSOL ORA100 Heat Transfer Fluid?

Key benefits include:

• Efficient heat transfer

• Freeze protection when properly diluted

• Corrosion-inhibited formulation

• Protection for compatible metal systems

• Suitable for industrial thermal applications

• Hard-water stability

• Compatibility with commonly used elastomers

• Long service potential when properly maintained

• Suitable for heating and heat-recovery systems

25. What is the reserve alkalinity of ORA100 Heat Transfer Fluid?

The reference technical information gives a typical reserve alkalinity of:

10.0 mL minimum

measured as specified by the applicable ASTM test method.

For RXSOL commercial supply, the current product specification and COA should be considered the controlling documents. 

26. Is ORA100 Heat Transfer Fluid suitable for high-temperature applications?

The referenced technical information indicates a recommended use temperature range extending up to approximately 175°C.

However, the actual allowable temperature depends on concentration, system pressure, equipment design, fluid condition and thermal stability. Always follow the current RXSOL TDS and equipment manufacturer's operating limits. 

27. Is ORA100 Heat Transfer Fluid suitable for low-temperature applications?

Yes. Properly diluted inhibited ethylene glycol fluids are particularly useful where freeze protection is required.

The final concentration must be selected according to the minimum system temperature.

28. What packaging is available for RXSOL-81-1587-211 ORA100 Heat Transfer Fluid?

RXSOL ORA100 can be supplied in suitable industrial packaging such as:

• 25 L / 20 L containers

• 210 L drums

• 1000 L IBC

• Bulk supply, subject to order quantity

Actual packaging availability should be confirmed at the time of quotation.

29. What is the product code?

The RXSOL product identification is:

Product: ORA100 Heat Transfer Fluid
RXSOL Code: RXSOL-81-1587-211

30. What documents can be requested for ORA100 Heat Transfer Fluid?

Depending on the order and grade, customers can request:

• Technical Data Sheet (TDS)

• Safety Data Sheet (SDS)

• Certificate of Analysis (COA)

• Product specification

• Packing details

• Batch information

• Application guidance

31. How should ORA100 Heat Transfer Fluid be stored?

Store in a:

• Cool and dry area

• Well-ventilated location

• Properly labelled container

• Sealed container when not in use

• Area protected from contamination

Avoid unnecessary exposure to heat and contamination. Follow the current RXSOL SDS for detailed storage and handling requirements.

32. Is ORA100 Heat Transfer Fluid a coolant or a heat-transfer fluid?

It can perform both heat-transfer and freeze-protection functions, depending on the system.

The term “heat-transfer fluid” is generally more appropriate because the product is designed to circulate thermal energy through heating, cooling or heat-recovery systems.

33. Why should an inhibited glycol fluid be preferred over ordinary ethylene glycol?

Ordinary ethylene glycol primarily provides freeze protection and heat-transfer capability. An inhibited heat-transfer formulation additionally contains a corrosion-control package designed for use in thermal systems.

This can help protect compatible system metals and extend fluid/service life when the fluid is properly maintained.

34. How can I order RXSOL-81-1587-211 ORA100 Heat Transfer Fluid?

Customers can contact RXSOL/DUBI Chem with:

• Required quantity

• Delivery location

• System/application

• Required concentration

• Minimum operating temperature

• Maximum operating temperature

• Packaging preference

The technical team can then confirm the appropriate product specification, packing and commercial offer.

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