[HWY36]

https://www.supplyhouse.com/Hercules-...SABEgLmG_D_BwE

Is this safe to run in my heat exchangers? Do I need something more food grade? The MSDS seems to indicate that it is fine. Regards.

[Douglas.Curtis]

Originally Posted by glycol site

Overview:
Contains virgin (not recycled) propylene glycol with Triple Protection corrosion inhibitor, ready to use formulation. Certified Performance: Freeze Protection Down to -70°F, Pumpable Down to -80°F, and Burst Protection Down to -100°F. Dilute for less severe conditions; check dilution tables in Hercules spec sheet to obtain desired protections. Not for use in boilers with aluminum heat exchangers.

No idea what the corrosion inhibitor is, MSDS says to wash it off skin and no internal use. I'd say it's not food grade, maybe not even close.

Have aluminum heat exchangers?

[jswick93]

Shouldn't matter if it's food grade or not for a heat exchanger. There shouldn't be any way for it to contaminate anything if it's sealed up properly.

[Terpharvester]

Just got my 30 gallons of that stuff in gunna check out how it works hopefully dry ice isn't going to freeze up in it

[HWY36]

Originally Posted by Douglas.Curtis

No idea what the corrosion inhibitor is, MSDS says to wash it off skin and no internal use. I'd say it's not food grade, maybe not even close.

Have aluminum heat exchangers?

The heat exchangers are supposed to be stainless.

[HWY36]

Originally Posted by jswick93

Shouldn't matter if it's food grade or not for a heat exchanger. There shouldn't be any way for it to contaminate anything if it's sealed up properly.

It is sealed up but inevitably small leaks happen on the inlet or outlet hose and drip, drip, drip.