When it comes to industrial cooling systems, the threat of rust and corrosion is ever-present and costly. While Propylene Glycol has long been a trusted fluid for heat transfer and antifreeze applications, its upgraded counterpart—Propylene Glycol with Rust Inhibitor, known as ProCool—is rapidly becoming the chemical of choice for industrial users across South Africa.
This enhanced formulation doesn’t just manage temperature—it safeguards valuable equipment from the silent but damaging effects of rust. At the forefront of this advancement is Chemtoll, South Africa’s leading expert in the manufacturing and bulk distribution of chemical products.
Understanding Propylene Glycol and Why It Matters
What Is Propylene Glycol?
Propylene Glycol is a clear, odourless, and viscous liquid used primarily as a heat transfer fluid, antifreeze, and humectant. It is especially popular due to its relatively low toxicity, making it a safer alternative to ethylene glycol in both industrial and commercial applications.
Common uses include:
- Closed-loop HVAC and chiller systems
- Process cooling in food and beverage plants
- Solar thermal systems
- Pharmaceuticals and cosmetics
Yet while it excels at controlling temperature, standard Propylene Glycol lacks one vital feature—protection against corrosion.
The Upgrade: What Is ProCool?
Introducing Propylene Glycol with Rust Inhibitor, ProCool
ProCool is a proprietary formulation of Propylene Glycol enriched with corrosion inhibitors, designed specifically to prevent rust, pitting, and scale formation in metal cooling systems.
These inhibitors form a protective film on metal surfaces such as copper, steel, aluminium, and brass, blocking oxidising agents from initiating corrosion reactions. This is especially crucial in systems that remain in use for extended periods or operate in humid and variable environments.
Benefits of ProCool:
- Superior rust and corrosion prevention
- Longer system life and reduced maintenance
- Compatibility with mixed-metal systems
- Optimised thermal conductivity
- No need for additional additives
Why Rust Inhibitors Matter in Industrial Systems
The Cost of Corrosion
In cooling and HVAC systems, even small amounts of oxidation can reduce heat exchange efficiency, cause leaks, and compromise performance. The cost? Lost production time, expensive part replacements, and unplanned downtime.
In sensitive industries such as food processing, pharmaceuticals, and manufacturing, such risks are simply unacceptable.
A Long-Term Investment
Using ProCool is not just about corrosion prevention—it’s about protecting the capital investment made in your infrastructure. Preventive maintenance through chemical engineering pays off in the long term, and Chemtoll’s ProCool is engineered with that philosophy in mind.
Chemtoll: Experts in Propylene Glycol and Speciality Blends
A South African Leader in Chemical Manufacturing
Chemtoll isn’t just another chemical supplier—we are a custom formulator and manufacturer, trusted by leading businesses in South Africa and across the African continent. Our in-house capabilities allow us to produce and blend Propylene Glycol with rust inhibitor (ProCool) in bulk, tailored to your exact industrial specifications.
Whether you need 25L poly cans, 210L drums, IBCs, or bulk tanker loads, Chemtoll has the infrastructure and quality assurance systems to meet your requirements.
The Difference Between Propylene Glycol and ProCool
| Feature | Propylene Glycol | ProCool (PG + Rust Inhibitor) |
|---|---|---|
| Heat transfer | ✅ | ✅ |
| Antifreeze properties | ✅ | ✅ |
| Rust and corrosion protection | ❌ | ✅ |
| Pre-blended for ready use | ❌ (needs additive) | ✅ |
| Ideal for long-term system use | ❌ | ✅ |
Applications of ProCool in South Africa
Food & Beverage Manufacturing
In cold storage and processing facilities, ProCool ensures that chilling systems operate efficiently without contaminating products or compromising the hygiene of equipment.
Renewable Energy (Solar Thermal)
In solar collectors, ProCool serves as a heat transfer fluid that prevents rusting of copper or steel piping, especially in regions with mineral-rich water that can accelerate scaling and corrosion.
Mining and Heavy Industry
Mining operations in the Northern Cape and Mpumalanga use ProCool to protect closed-loop cooling systems in dusty and corrosive environments, helping them extend equipment life and reduce replacement frequency.
Chemtoll’s Manufacturing Capacity and Distribution Reach
Scalable Production
Whether you’re a regional bottling plant or a multi-site mining operation, Chemtoll can scale your order—manufacturing ProCool in bulk quantities and custom concentrations.
Nationwide Delivery
From Cape Town to Johannesburg, Durban to Windhoek, Chemtoll delivers chemical products directly to your premises via certified bulk transport solutions. We offer logistics transparency, safe packaging, and on-time delivery—every time.
Why Chemtoll Is South Africa’s Preferred Partner
Industry-Leading Quality Assurance
Chemtoll operates with strict batch quality control, using precision blending equipment and routine lab analysis to ensure every litre of ProCool meets international performance benchmarks.
Compliance and Safety
Our production and transport systems meet:
- ISO-aligned quality frameworks. (ISO 9001 and ISO 45001)
- Local HSE and environmental regulations
- Transport safety protocols for corrosive materials
Customisation and Technical Support
Have a specialised system with mixed-metal construction or high operating pressures? Chemtoll offers technical consultations, site support, and compatibility assessments to help integrate ProCool into your existing infrastructure.
Final Thoughts: Choose ProCool, Choose Chemtoll
In a world where industrial operations depend on precision, durability, and uptime, Chemtoll’s ProCool offers a smarter, safer solution for your cooling and heat transfer systems. As a chemical formulator and logistics expert, Chemtoll stands out not only for product quality but for our commitment to customer success.
From manufacturing to delivery, Chemtoll is your reliable partner in bulk chemical supply and custom chemical blending across South Africa and the African continent.
Trust Chemtoll for your Propylene Glycol with rust inhibitor needs—engineered as ProCool. Manufactured locally. Delivered reliably. Backed by expertise.
