Inhibited ethylene and propylene glycol heat-transfer fluids

Thermal Charge Alternative

Inhibited glycol concentrates and premixes for HVAC, chiller, snow-melt and process loops. Blended and shipped from Taylor, Texas, with a certificate of analysis on every lot.

See the coolant Get a tote quote

01

The short answer

Quick answer

Thermal Charge EG and Thermal Charge PG are Old World Industries' inhibited glycol heat-transfer fluids, sold as a concentrate and as a 50/50 premix by volume that freezes at about -30 °F. We sell inhibited ethylene and propylene glycol concentrates and premixes for the same closed loops. Our premixes are named by percent by weight and our inhibitor chemistry is different, so match on freeze point and treat ours as an alternative, not the same fluid.

02

What to order

The products that fit this spec, and what each one is for.

For Thermal Charge EG 50/50

Inhibited Ethylene Glycol 50/50 with OAT-908

Ready-mixed 50/50 inhibited ethylene glycol with deionized water. About 1 °F warmer than Thermal Charge EG 50/50; ask for a stronger blend if your design needs -30 °F.

Freeze point: approx. -34 °C (-29 °F) typical; -32.5 °C (-27 °F) max, at 50 wt% ethylene glycol · Quart to 330-gallon tote · COA with every lot

See sizes and pricing TDSSDS
For Thermal Charge PG 50/50 (non-food loops)

Inhibited Propylene Glycol 50/50 with OAT Inhibitor

Ready-mixed 50/50 inhibited propylene glycol for HVAC and chiller loops that do not need a food-grade fluid.

Freeze point: approx. -33 °C (-28 °F) at 50 wt% propylene glycol · Quart to 330-gallon tote · COA with every lot

See sizes and pricing TDSSDS
Concentrate, or blended to order

100% Ethylene Glycol Inhibited

Inhibited ethylene glycol concentrate for site blending, or blended by us to the exact freeze point you need.

Quart to 330-gallon tote · COA with every lot

See sizes and pricing TDSSDS

Need a different concentration? We blend to the freeze point you specify, in pails, drums and 275- or 330-gallon totes.

03

About Thermal Charge

What Old World Industries publishes about the fluids.

Thermal Charge EGInhibited ethylene glycol concentrate, dyed fluorescent pink; meets ASTM D3306 corrosion requirements (ASTM D1384)
Thermal Charge PGInhibited propylene glycol concentrate (96% glycols), NSF HT1 registered for food plants
Premix50/50 by volume, freeze protection to about -30 °F for both
InhibitorPassivating industrial inhibitor; type not named

Matched by freeze point

Thermal Charge Their freeze point Our closest Our freeze point Note
EG 50/50 (by volume)
-30 °F
Inhibited Ethylene Glycol 50/50 with OAT-908
-29 °F typical, -27 °F max
About 1 °F warmer; blended stronger to order if you need -30 °F
EG concentrate
—
100% Ethylene Glycol Inhibited
Concentrate
For site blending
PG 50/50 (by volume)
-30 °F
Inhibited Propylene Glycol 50/50 with OAT Inhibitor
-28 °F typical
About 2 °F warmer; blended stronger to order if you need -30 °F
PG concentrate
—
100% Propylene Glycol Inhibited
Concentrate
Not food grade

Source: Old World Industries Thermal Charge EG product data sheet (and the Thermal Charge PG data sheet, via a distributor).

04

Side by side

Thermal Charge compared with our inhibited glycol line

Property Thermal Charge (published) Alliance inhibited glycol Comparison
Glycol
Ethylene (EG) or propylene (PG)
Ethylene or propylene glycol
Same
Premix strengths
50/50 by volume; others on request
20/80 to 50/50 by weight in stock; others blended to order
Same
50/50 freeze point
About -30 °F
-29 °F (EG), -28 °F (PG) typical
Adjusted at blend
Inhibitor
Passivating industrial inhibitor
Nitrite-containing hybrid organic-acid package
Different
Food grade (PG)
NSF HT1 registered
No. Not for food contact or potable water
Different
Color
Fluorescent pink (EG)
Undyed; green or purple leak-detection dye can be added
On request

Our column comes from our controlled technical data sheets and SDS. Their column comes from published sources; we do not test competitor fluids.

05

Questions

Which of your products replaces Thermal Charge EG 50/50?

Our Inhibited Ethylene Glycol 50/50 with OAT-908, at about -29 °F typical against Thermal Charge's -30 °F. If your design temperature needs the full -30 °F, we blend it slightly stronger to order.

Can I use your propylene glycol in a food plant?

No. Thermal Charge PG is NSF HT1 registered; ours is not food grade and is not for food contact or potable-water protection.

Can I top up a Thermal Charge system with your fluid?

No. Do not mix inhibitor chemistries. Drain, flush with deionized water and refill.

Why do the 50/50 freeze points differ?

Thermal Charge 50/50 is 50% by volume. Our premixes are 50% by weight, which is slightly weaker. Pick the strength from your coldest fluid temperature, not from the name.

Quote a fill

Pricing, freight and lead time for your site

Tell us where the coolant goes, how much, and when it has to be there.

  • Priced for your volume, from pails to 330-gallon totes
  • Freight to your site from Taylor, Texas
  • Blended to the freeze point you specify, COA with every lot

Prefer to talk? (512) 365-6838

RelatedPROTOCOL LT alternativeDOWTHERM SR-1 alternativeDOWFROST alternativeNOBURST alternativeHercules Cryo-Tek alternativePROTOCOL NT alternativeCoolant FinderGlycol technical submittal

Thermal Charge is a registered trademark of Old World Industries, LLC. Alliance Chemical is not affiliated with Old World Industries or its distributors, and our products are not Thermal Charge products. Comparisons use published information; confirm against the current data sheet and your system's fluid specification before switching.