Propylene Glycol BP/USP - Food Grade Antifreeze & Heat Transfer Fluid
Barry Brown & Sons supplies Propylene Glycol BP/USP (CAS 57-55-6) – a non-toxic, food-grade antifreeze and heat transfer fluid for dairy, brewing, beverage, cosmetics, pharmaceutical, and industrial applications. USP-grade approved for food and hygiene-critical environments, it’s the essential additive for glycol chiller systems running below 7°C. Available in containers and IBC quantities with Australia-wide delivery and technical support, we help businesses source reliable propylene glycol Australia-wide for both new installations and ongoing system maintenance.
What Is Propylene Glycol and How Does It Work?
So exactly what is propylene glycol? Well, it’s a non-toxic, organic raw material commonly used in heat transfer and cooling systems. Propylene Glycol USP (CAS 57-55-6) works as an antifreeze additive that lowers the freezing point of water when mixed into a glycol chiller circuit. This allows systems to safely operate at sub-zero temperatures without freezing or damaging equipment.
In glycol chiller applications, the chiller itself cools the product, while the propylene glycol antifreeze solution protects the system when operating below 7°C. It is also widely used as a heat transfer fluid and coolant in brewing, dairy processing, food manufacturing, HVAC systems, and industrial refrigeration.
50+ Years Experience
WORLDWide Delivery
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50+ Years Experience
AU-Wide Delivery
Custom Builds & Fittings
Refurbished Options Available
Where Is Propylene Glycol Used? Applications by Industry
Industrial refrigeration systems, hydronic heating systems, and HVAC applications use inhibited propylene glycol antifreeze to reduce freeze risk, improve thermal stability, and help protect internal equipment components.
With decades of experience supplying industrial processing equipment and cooling solutions, Barry Brown & Sons provides both technical support and dependable propylene glycol Australia-wide delivery.
Dairy
Propylene glycol antifreeze is commonly used in glycol chiller circuits for milk cooling, storage tanks, and dairy processing systems where precise temperature control is essential.
Beverage & Brewing
Breweries, wineries, distilleries, and beverage producers rely on propylene glycol for fermenter cooling, bright tanks, jacketed vessels, and cold stabilisation processes.
Food Manufacturing
Food processing facilities use propylene glycol as a coolant and heat transfer fluid across production lines, process tanks, and temperature-controlled manufacturing equipment.
Industrial & HVAC
Reliable tank and line cleaning for compliant industrial processing operations. for safe, compliant chemical handling.
Propylene Glycol Specifications & Packaging Options
Barry Brown & Sons supplies Propylene Glycol BP/USP in quantities suited to operations of every scale, from small production facilities through to large industrial plants. The amount required will depend on your system size, operating temperatures, and desired freeze protection level. Always refer to your glycol chiller instructions or contact our team for advice on the correct solution concentration and volume.
A Glycol Specification Data Sheet is available on request.
Key product specifications
- CAS Number: 57-55-6
- Grade: BP/USP
- Non-toxic, food-safe formulation
- Suitable for mains pressure systems
- Available in containers and IBC quantities
From bulk propylene glycol Australia-wide to smaller maintenance quantities, Barry Brown & Sons can help source the right solution for your operation.
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Frequently Asked Questions
Propylene glycol is commonly used as a heat transfer fluid in industrial cooling and heating systems. It helps prevent freezing, supports stable operating temperatures, and protects equipment in applications including chillers, HVAC systems, food processing plants, breweries, wineries, dairies, and pharmaceutical manufacturing.
The primary difference is toxicity. Propylene glycol is a lower-toxicity option widely used in food-grade, beverage, and pharmaceutical applications, while ethylene glycol is more toxic and generally used in automotive and heavy industrial systems where food contact is not a concern. For many food-safe applications, propylene glycol antifreeze is the preferred solution.
Yes. BP/USP grade propylene glycol is suitable for food, beverage, and pharmaceutical applications when correctly used. It meets recognised purity standards and is commonly used in systems where incidental food contact may occur, including dairy, brewing, winery, dairy processing, and beverage cooling systems.
The amount of propylene glycol required depends on the total system volume, pipework length, operating temperatures, and desired freeze protection levels. Barry Brown & Sons can assist with calculating the appropriate glycol concentration and fluid volume for optimal performance.
Yes. Barry Brown & Sons supplies propylene glycol separately for existing systems, maintenance top-ups, new installations, and replacement requirements. Various quantities and concentrations are available to suit your application.
Yes. Barry Brown & Sons provides Australia-wide delivery of propylene glycol products for industrial, commercial, food manufacturing, and beverage processing applications.
The correct glycol concentration depends on your required operating temperature and desired level of freeze protection. Higher concentrations improve freeze resistance but may reduce heat transfer efficiency if over-concentrated. Barry Brown & Sons can recommend the ideal propylene glycol mix for your application and climate conditions.
Yes. Inhibited propylene glycol antifreeze contains corrosion inhibitors that help protect pipes, pumps, heat exchangers, and other components against rust, scale, and internal corrosion. Proper glycol management can help improve equipment lifespan and overall system reliability.
Propylene glycol systems should be tested regularly to monitor glycol concentration, pH balance, and inhibitor performance. Depending on system conditions and maintenance practices, glycol solutions may last several years before replacement is required. Routine testing helps maintain system efficiency and equipment protection.
Yes. Propylene glycol is widely used in both heating and cooling systems due to its strong thermal transfer properties and freeze protection capabilities. It is commonly used in chilled water systems, process cooling, hydronic heating systems, HVAC applications, and thermal energy storage systems.
Talk to Us About Your Propylene Glycol System
If you need a reliable glycol cooling solution for your facility, let’s start with a conversation. Whether you have a specific application in mind or need guidance on the right system for your process, our team is here to help.
We’ll take the time to understand your cooling requirements and recommend a propylene glycol solution engineered for your operation. No pressure, just a practical discussion.
Shop Our Full Range of Tanks, Technology & Equipment
We offer reliable propylene glycol Australia-wide, customised glycol chiller setups, integrated industrial cooling equipment, and more. Just contact our team and we’ll help you find the right system for your operation.
