Tel: +86 13962653966 | Email： sales@szeasychem.com
Tel: +86 13962653966 | Email： sales@szeasychem.com
Antifreeze and industrial cooling systems often operate under conditions that promote microbial contamination:
High water content creates a favorable environment for bacteria and fungi
Long-term circulation accelerates biofilm and slime formation
Glycol degradation may lead to unpleasant odor and reduced heat transfer efficiency
Microbial growth can cause corrosion, fouling, and system blockage
Once contamination occurs, it is difficult to remove and may result in increased maintenance costs or system failure.
Not all preservatives are suitable for antifreeze or cooling formulations.
Common issues include:
Instability at elevated temperatures, especially for oxidizing biocides
Loss of efficacy in glycol-rich or alkaline environments
Compatibility problems, such as precipitation or negative impact on fluid performance
Using an unsuitable biocide may temporarily suppress microbes but fail to provide long-term protection.
For antifreeze and cooling applications, non-oxidizing industrial biocides are generally preferred due to their stability and compatibility.
Isothiazolinone-based biocides (e.g. CMIT/MIT, BIT, BBIT)
Other compatible non-oxidizing biocides (subject to formulation evaluation)
Effective against bacteria, fungi, and algae
Designed for long-term circulation systems
Compatible with ethylene glycol and propylene glycol formulations
Suitable for neutral to alkaline pH ranges
Minimal impact on thermal and physical properties of the fluid
Rather than offering a “one-size-fits-all” product, selection depends on real operating conditions.
Before suggesting a suitable biocide, we assess key formulation and application factors to reduce trial-and-error:
Type and concentration of glycol (ethylene or propylene glycol)
Operating temperature and pH range
System design and circulation duration
Water quality and contamination risk
Regulatory and market requirements
This approach helps ensure stability, compatibility, and reliable long-term protection.
Our biocide solutions are commonly used in:
Automotive and industrial antifreeze
Closed-loop and open cooling systems
Heat transfer fluids
Industrial circulation systems requiring microbial control
Choosing the wrong biocide can lead to instability, reduced performance, or recurring contamination.
Tell us your antifreeze or cooling system conditions — we help you select a stable, compatible biocide and avoid unnecessary testing and risk.
👉 Discuss My Application
Can biocides affect antifreeze performance?
Yes. Incompatible biocides may affect stability, cause precipitation, or reduce heat transfer efficiency. Compatibility evaluation is essential.
Are these biocides suitable for long-term circulation systems?
Yes. Non-oxidizing biocides are designed to provide long-term protection under continuous circulation conditions.
Can you support both ethylene glycol and propylene glycol systems?
Yes. Selection depends on formulation details and operating conditions.
Do you provide technical support for application selection?
Yes. We assist customers in evaluating formulation conditions and selecting appropriate biocide solutions.
Focus on industrial biocide applications, not generic preservatives
Experience with glycol-based and alkaline systems
Practical, application-driven recommendations
Support for supplier qualification and long-term supply
Suzhou easy chemical co. ltd
388, Dengyun Road,Kunshan, Jiangsu, China
Email: sales@szeasychem.com
Contact： Joyce Yu
MB: +86 13962653966
Tel: 0512- 57554186
Whatsapp&Wechat: +86 13962653966
Please fill in the below form accordingly, we will be able to contact you within 2 working hours.
We will contact you within 2 hours, please pay attention to the email with the suffix “joyceyu@szeasychem.com”.
