Ice flake point
The freezing point is a measure of the anti-freeze effect of cryoprotectants . The ice flake point is the temperature at which the first ice crystals begin to form when a liquid cools down. The test method used is described in ASTM Standard D 1177. The lowering of the ice flake point is proportional to the content of anti-freeze agent, so the amount of anti-freeze agent can be deduced from a measured ice layer point, provided the type of anti-freeze agent is known.
Ice flake points of water- ethylene glycol mixtures :
| Ethylene glycol (vol .-%) | Ice flake point (° C) |
|---|---|
| 10 | −4 |
| 20th | −9 |
| 30th | −17 |
| 40 | −26 |
| 50 | −39 |
Individual evidence
- ↑ Summary of method ASTM D 1177 (engl.)
- ↑ Kraftfahrtechnisches Taschenbuch, Robert Bosch GmbH, Vieweg + Teubner Verlag, 2007, p. 335; ISBN 3-83480138-0 .