Nitrite-free ethylene glycol coolant

DOWCAL 100E Alternative

A nitrite-free inhibited ethylene glycol premix, ready to fill. Blended and shipped from Taylor, Texas, with a certificate of analysis on every lot.

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The short answer

Quick answer

DOWCAL 100E is Dow's ethylene glycol concentrate with a nitrite-, nitrate- and borate-free inhibitor. Our Inhibited Ethylene Glycol 40/60, Nitrite-Free is a ready-to-use 40% ethylene glycol premix with a nitrite-free sodium benzoate inhibitor and no borate. It arrives at strength, so you fill instead of blending, and it protects to about -25 °C (-13 °F). It is an alternative with a different inhibitor package, not an identical fluid.

Closed-loop cooling skid with plate heat exchanger, pump and expansion tank beside Alliance Chemical IBC totes and a drum of nitrite-free ethylene glycol premix

What to order

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

Ready-to-fill

Inhibited Ethylene Glycol 40/60, Nitrite-Free

Nitrite-free, borate-free inhibited ethylene glycol at 40%, blended with deionized water. Fill straight from the tote.

Freeze point: about -25 °C (-13 °F) typical · Quart to 330-gallon tote · COA with every lot

See sizes and pricing TDS SDS

Flush and make-up

Deionized Water ACS Reagent Grade

Conductivity under 1 µS/cm for flushing new piping and evaporative top-off.

Quart to 330-gallon tote · COA with every lot

See sizes and pricing TDS SDS

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

About DOWCAL 100E

What Dow's distributors publish about the fluid.

GlycolEthylene glycol concentrate

InhibitorFree of nitrite, nitrate and borate

Freeze pointAbout -37 °C at 50% in water (distributor data)

UseDiluted with water for closed heating and cooling loops

Source: Dow DOWCAL heat transfer fluids overview (distributor summary of Dow data).

Side by side

DOWCAL 100E compared with our Inhibited EG 40/60, Nitrite-Free

Property	DOWCAL 100E (published)	Alliance EG 40/60 Nitrite-Free	Comparison
Glycol	Ethylene glycol	Ethylene glycol	Same
Form	Concentrate, diluted on site	Ready-to-use premix, 41 to 44% EG by weight in deionized water	Different
Nitrite	Nitrite-free	Nitrite-free	Same
Nitrate and borate	Free of both	None in the SDS composition	Same
Inhibitor	Composition not published	Sodium benzoate package; phosphate only as a trace under 0.002%	Different
Freeze point	About -37 °C at 50%	About -25 °C (-13 °F) typical, -23 °C (-10 °F) max	Different

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

Questions

Is your nitrite-free ethylene glycol the same as DOWCAL 100E?

No. Both are nitrite-free ethylene glycol coolants, but DOWCAL 100E is a concentrate and ours is a ready-to-use 40% premix with a sodium benzoate inhibitor package. Check it against your equipment maker's coolant specification.

What freeze protection does the 40/60 premix give?

About -25 °C (-13 °F) typical and -23 °C (-10 °F) maximum per ASTM D1177. For colder sites, ask about a stronger blend.

Is it borate-free and nitrate-free?

Yes. The SDS composition lists no borate, nitrate or nitrite.

Can I mix it with DOWCAL already in the loop?

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

Quote a fill

Tell us the site, the number of totes or the system volume, and the date the coolant has to be on site. We reply with pricing, freight and lead time.

DOWFROST, DOWTHERM and DOWCAL are trademarks of The Dow Chemical Company or an affiliated company. Alliance Chemical is not affiliated with Dow, and our products are not Dow products. Comparisons use Dow's and its distributors' published information; confirm against the current data sheets and your system's fluid specification before switching.