VG freezes @ 62.6F
PG freezes somewhere below -55F
The main use of PG as an anti-freeze has been in commercial food processing machines due to the possibility of cross contamination with food. The results I have seen show 10-60% PG diluted with water. At the rate of 60%PG/40% water the freezing point was -55F. So needless to say the PG freezing point is somewhere probably well below -55F.
Now companies like Prestone are making a PG based anti-freeze for automobiles. It is 90-100% pure PG and PG is the active ingredient.
http://www.msdshazcom.com/WEB_DOCS/Facilities/PrestoneLowTox.pdf
PG freezes somewhere below -55F
The main use of PG as an anti-freeze has been in commercial food processing machines due to the possibility of cross contamination with food. The results I have seen show 10-60% PG diluted with water. At the rate of 60%PG/40% water the freezing point was -55F. So needless to say the PG freezing point is somewhere probably well below -55F.
Now companies like Prestone are making a PG based anti-freeze for automobiles. It is 90-100% pure PG and PG is the active ingredient.
http://www.msdshazcom.com/WEB_DOCS/Facilities/PrestoneLowTox.pdf
