yes low molecular weight polyethylene glycol is used for automotive anti-freeze. most commonly used ones are ethylene glycol or propylene glycol
The chemical formula of propylene glycol is C3H8O2.
The chemical formula for ethylene glycol is C2H6O2.
Ethanol serves as a competitive inhibitor which competes with glycol for the enzyme alcohol dehydrogenase's active site. Thus, less glycol will be oxidised
You could determine its boiling point. The boiling point of ethylene glycol is 197.3 oC, and the boiling point of propylene glycol is 188.2 oC.
What is the Nitrogen Gas Pipe Lines Standard Color
PVC pipe is an acceptable product to use in chillers that contain glycol. You should never use galvinized pipe where glycol is used. Copper is acceptable as well.
Black
It is clear. If it is at room temperature, and 100% Ethylene glycol is clear.
Black pipe is used mainly for gas lines. Like it's name it is black in color and made from a heavy gauge steel. Galvanized pipe is pipe that has been coated with a material that reduces the effects of rust. It is silver in color.
Orange color coded "pipe" is for telecommunication, alarm or signal lines, cables, or conduit. Orange colored PEX water pipe is a plastic pipe suitable for hot water lines. "Orangeburg" sewer pipe (not orange in color) was an inexpensive sewer pipe made of a wood pulp and pitch composite, it does not last very long and often fails catastrophically requiring expensive repairs.
Yelowish
Orange
Light Green for COLD Water and Dark Green for HOT water
Galvanized pipe will be silver/gray color. Copper will be copper. Use a magnet, it'll stick to galvanized pipe but not to copper. Drinking water lines should not be black steel pipe.
Shower pipe is gray
Oil Lines or pipe lines.