1 gal of propylene glycol to 24 gal of water
UBC GL-5G Propylene Glycol Coolant /UnbeatableSale.com
Use the following table as a guide for your antifreeze application.
Solution (% by mass)
10
20
30
40
50
60
Freeze Temp (º F)
26
18
7
-8
-29
-55
Boiling Temp (º F)
212
213
216
219
222
225
table
Courtesy of dudadiesel.com
Propylene glycol used to be in vehicle antifreeze.
Yes, propylene glycol is a humectant.
The chemical formula of propylene glycol is C3H8O2.
Propylene glycol has covalent bonds.
Propylene glycol can be made through a chemical process called hydration of propylene oxide, where propylene oxide reacts with water to form propylene glycol. This reaction is typically carried out in the presence of a catalyst, such as an acid or a base, to facilitate the conversion of propylene oxide into propylene glycol.
The freezing point of pure coolant, such as ethylene glycol or propylene glycol, is typically around -34°C to -37°C (-29°F to -34°F).
From www.fao.org/ag/agn/jecfa-additives/specs/Monograph1/Additive-360.pdf Propylene glycol alginate is an ester of alginic acid in which some of the carboxyl groups are esterified with propylene glycol, some neutralized with an appropriate alkali and some remain free.
Propylene glycol in fireball
The weight of a liter of propylene glycol is approximately 1.036 kilograms.
Propylene glycol is generally considered safer than ethylene glycol for use in coolant/antifreeze due to its lower toxicity. This makes propylene glycol a preferred choice for applications where accidental ingestion may occur, such as in RVs or marine engines. Additionally, propylene glycol is less harmful to the environment compared to ethylene glycol.
No, propanediol and propylene glycol are not the same. Propanediol is a chemical compound with two hydroxyl groups, while propylene glycol is a chemical compound with one hydroxyl group.
Any substance that lowers the freezing point of water such as ethylene glycol or propylene glycol which are commonly added to water