By definition, a concentrate is a product with a high content of the main useful substance. Such a product requires dilution (with water, etc.) before use.
Let’s look at this term in the context of heat carriers/antifreezes based on propylene glycol and ethylene glycol.
Is propylene glycol or ethylene glycol a “concentrate”? No. They are chemicals in which the glycol itself is 99.5–99.9%. They have practically no foreign impurities; in such a minuscule amount they are more likely contaminants.
The raw chemical products propylene glycol and ethylene glycol act as the main substance for heat carriers, or coolants, or antifreezes.
The coolant is already a mixture of several substances, the main one of which is glycol, and the others are water and functional additives, primarily corrosion inhibitors.
If the water content is minimized, we will get a coolant concentrate or an antifreeze concentrate.
To summarize: the expression “propylene glycol concentrate” essentially does not make sense — either “propylene glycol” or “coolant concentrate”.
For greater clarity, let’s summarize what has been said in a table:
| Propylene glycol / Ethylene glycol | Coolant/antifreeze concentrate | |
|---|---|---|
| Basic substance | 99.5–99.9% | 90–96% |
| Impurities | 0.1–0.5% | 4–10% |
| Presence of corrosion inhibitors | — | + |
However, if you call the company “Stron”, we will definitely figure out what you need and help you buy this particular product.
