Inhibited Ethylene Glycol 35/65 OAT-908 Data Center Coolant

Name: Quick Facts: Inhibited Ethylene Glycol 35/65 with OAT-908 — Data Center Coolant
Creator: Alliance Chemical
License: https://alliancechemical.com/policies/terms-of-service

Ethylene Glycol

Active ingredient: ethylene glycol, also known as ethane-1,2-diol · 1,2-ethanediol · monoethylene glycol · MEG
CAS number: 107-21-1
Formula: C2H6O2
Molecular weight: 62.07 (ethylene glycol) g/mol
Concentration: 35%
Grade: Inhibited
Flash point: Not flammable (aqueous solution)
Boiling point: ~105 °C

Hazards

Signal word Warning

Irritant
Health hazard

Summary only. Read the SDS and the container label for complete hazard and handling information.

SDS also in

Who uses it

Data center facility teams, Cooling system service contractors, HVAC and mechanical firms, Industrial maintenance departments

Oil & Gas
HVAC & Geothermal

Representative industry photos.

Product quick facts

CAS 107-21-1C2H6O2

Inhibited Ethylene Glycol 35/65 with OAT-908 — Data Center Coolant (CAS 107-21-1) is a 35% Inhibited-grade liquid with molecular formula C2H6O2 and a molecular weight of 62.07 (ethylene glycol) g/mol. Its active ingredient, ethylene glycol, is also known as ethane-1,2-diol, 1,2-ethanediol, monoethylene glycol and MEG. It has a flash point of Not flammable (aqueous solution). Alliance Chemical supplies this product in 7 container sizes from 1 Quart to 330 Gallon (16 pack options) with 1-2 business day shipping from Taylor, TX on in-stock orders, plus SDS and lot-specific Certificate of Analysis.

Pack sizes 7 container sizes (1 Quart to 330 Gallon) · 16 pack options
Purity / spec 35% Inhibited
Lead time In-stock orders placed by Mon-Thu 2 PM CT / Fri 12 PM CT typically ship within 1-2 business days.
Regional availability View state-by-state shipping pages

Request Bulk Quote (512) 365-6838

Stock footage.

How it ships.

Regulated products are packed, marked, and labeled for hazmat transport, from one quart to a pallet of drums.

Most stocked orders ship in 1–2 business daysOrder cutoff: Mon-Thu 2 PM CT / Fri 12 PM CT
Hazmat packing, marking, and labelingPacked by staff trained under DOT rule 49 CFR 172.704
UPS Ground for bottles, jugs, and up to three pailsLTL freight for four or more pails, drums, and totes. Liftgate on request.

Ships with
FedEx Freight
Southeastern Freight Lines

Buying for a company or agency?

Pay by card at the listed price, or order on Net 30 terms once your credit is approved. For NSN and contract requirements, send an RFQ.

CAGE code: 1LT50
UEI: DCTCZDY3BLD3
Primary NAICS: 424690
Ownership: Woman-Owned
Federal supply: DLA Supplier
Terms: Net 30 on approved credit, W-9 on request

Apply for Net 30 Email a purchase order Vendor qualification documents

Gloved hands strapping four blue chemical drums to a pallet at a warehouse loading dock — Illustration.

Safety data sheets and certificates.

Find an SDS or TDS by product name or CAS number. Certificates of analysis are free on request.

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Description
Product Documents
Chemical Profile

Inhibited Ethylene Glycol 35/65 with OAT-908 — Data Center Coolant

Premium 35% w/w inhibited ethylene glycol coolant engineered for data centers, hyperscale direct-liquid cooling (DLC) loops, edge-compute thermal management, HVAC chillers, and industrial closed-loop heat-transfer systems. Pre-blended at 35% w/w ethylene glycol in deionized water with the OAT-908 hybrid corrosion-inhibitor package.

What is OAT-908?

OAT-908 is a hybrid Organic Acid Technology (OAT) corrosion-inhibitor package combining aliphatic organic acids with selective inorganic synergists (sodium nitrite, sodium molybdate, sodium benzoate) for simultaneous protection of copper, brass, mild steel, cast iron, aluminum, and lead-tin solder in a single fluid. Reduces silicate and phosphate fouling vs. legacy IAT and HOAT formulations.

Climate fit: West Texas, the Texas / Oklahoma / New Mexico belt, the Front Range (Denver, Albuquerque, Salt Lake City), and inland Mid-Atlantic / Southeast data-center sites that occasionally drop into the single digits Fahrenheit. Corresponds to ASHRAE Climate Zones 4 - 5 design conditions.

Performance

Engineered for the same closed-loop applications as premium industrial inhibited ethylene glycol coolants — chilled-water and condenser-water loops, DLC and rear-door heat exchangers, HVAC chiller systems, hydronic process cooling, and freeze / burst protection.

Why data-center engineers specify this blend

Freeze protection to -18°C (0°F) typical (-17°C / 1°F max) at the supplied 35/65 dilution — fits the climate-zone design conditions for the regions above
Annual fluid analysis recommended (reserve alkalinity, pH, refractive index)
Hybrid OAT inhibitor reduces heat-exchanger fouling vs. silicate/phosphate IAT formulations
Elastomer-compatible with NBR (Buna-N), EPDM, FKM (Viton), HNBR, VMQ silicone, neoprene (CR), and CSM (Hypalon)
Made in the USA — blended at our Taylor, Texas facility under documented batch-control procedures with lot-specific Certificate of Analysis
Non-DOT-regulated — ships standard freight without hazmat surcharge

Typical specifications (35/65 blend)

Property	Typical Value	Method
Specific Gravity at 20°C	1.046 – 1.050	ASTM D1298
pH (as supplied)	Typically 7.0 – 9.0; measured value reported on the lot COA	ASTM D1287
Reserve Alkalinity	7 – 10 mL 0.1 N HCl	ASTM D1121
Freeze Point	-18°C (0°F) typical; -17°C (1°F) max	ASTM D1177
Refractive Index at 20°C	1.358 – 1.362	ASTM D1747
Viscosity at 40°C	1.7 – 2.3 cP	ASTM D445
Thermal Conductivity at 50°C	0.40 – 0.44 W/m·K	ASHRAE 2017 ch.31
Specific Heat at 20°C	0.89 Btu/lb·°F (3.72 kJ/kg·K)	ASHRAE 2017 ch.31

Documentation & lot traceability

Technical Data Sheet (TDS) — available in the Product Documents tab
Safety Data Sheet (SDS) — available in the Product Documents tab
Certificate of Analysis (COA) — lot-specific, available on request within 1-2 business days

Pack sizes

Available in 1 Quart, 1 Gallon, 5 Gallon pail, 15 Gallon HDPE drum, 55 Gallon HDPE drum, 4 x 55 Gallon Drum pallet, 275 Gallon IBC tote, and 330 Gallon IBC tote — from sample / bench-test quantities up to bulk pallet and IBC orders.

Maintenance & make-up

Top up with the same fluid (this ready-to-use 35/65 premix), never with water alone: added water lowers both freeze protection and inhibitor concentration. Annual fluid analysis is recommended; replace fluid when reserve alkalinity falls below 5.0 mL or pH falls well below its as-filled baseline.

Pet-safety note: ethylene glycol is highly toxic to dogs, cats, and wildlife if ingested. Clean up spills immediately and store containers out of reach of animals. See the SDS for full hazard, first-aid, and disposal guidance.

Frequently Asked Questions About Inhibited Ethylene Glycol 35/65 with OAT-908 — Data Center Coolant

What is Inhibited Ethylene Glycol 35/65 with OAT-908?

A pre-blended 35% w/w ethylene glycol in deionized water, charged with the OAT-908 hybrid corrosion-inhibitor package. Engineered for closed-loop heat-transfer service in data centers, HVAC, and industrial process cooling.

What climate is this blend designed for?

West Texas, mountain west, Mid-Atlantic. Designed for outdoor dry-cooler and free-cooling loops in regions that occasionally drop into the single digits Fahrenheit. Freeze protection to -18°C (0°F) typical (-17°C / 1°F max) at the supplied 35/65 dilution.

Is this product suitable for data-center direct liquid cooling (DLC) loops?

Yes. The 35/65 dilution and OAT-908 inhibitor package are well-suited to data-center cooling loops, hyperscale rear-door heat exchangers, CDU loops, GPU and AI compute liquid cooling, HVAC chillers, and industrial closed-loop heat-transfer applications.

What metals and elastomers is it compatible with?

Compatible with copper, brass, mild steel, cast iron, stainless steel (304/316), aluminum (3003, 6061), lead-tin solder, polypropylene, HDPE, PVC, PVDF, PTFE, NBR, EPDM, FKM, HNBR, VMQ silicone, neoprene, and CSM. Not recommended for prolonged contact with natural rubber, magnesium alloys, or zinc-galvanized surfaces.

What is the expected service life?

It depends on system cleanliness, oxygen ingress, make-up water quality, and avoiding cross-contamination with incompatible inhibitor chemistries. Annual fluid analysis is recommended (reserve alkalinity, pH, refractive index).

What do I use for top-up and make-up?

Top up with the same fluid: this ready-to-use 35/65 premix. Adding water alone dilutes the blend and lowers both its freeze protection and its inhibitor concentration.

What is Inhibited Ethylene Glycol 35/65 with OAT-908 — Data Center Coolant and what is its chemical formula?

Inhibited Ethylene Glycol 35/65 with OAT-908 — Data Center Coolant is listed under CAS 107-21-1 (PubChem reference search). The catalog formula is C2H6O2. The listed molecular weight is 62.07 (ethylene glycol) g/mol. For solutions and blends, identity values may describe a constituent; consult the product SDS for composition.

What are the physical properties of Inhibited Ethylene Glycol 35/65 with OAT-908 — Data Center Coolant?

Catalog reference information for Inhibited Ethylene Glycol 35/65 with OAT-908 — Data Center Coolant: form: Liquid; melting point: Freeze point approx. -18 °C (0 °F) typical; -17 °C (1 °F) max, at 35 wt% ethylene glycol; boiling point: ~105 °C; flash point: Not flammable (aqueous solution); specific gravity: 1.047; reference values may describe a pure substance rather than the supplied concentration or blend. Confirm applicable conditions and specifications in the product documents; these values are not batch test results.

What grade and purity of Inhibited Ethylene Glycol 35/65 with OAT-908 — Data Center Coolant does Alliance Chemical offer?

Alliance Chemical lists Inhibited Ethylene Glycol 35/65 with OAT-908 — Data Center Coolant in Inhibited grade with a concentration or assay of 35%. Check the product specification for the measurement basis and acceptance limits. A grade label alone does not establish certification or suitability for a regulated application. For batch results, request a COA using the product name and lot number.

What are common industrial applications of Inhibited Ethylene Glycol 35/65 with OAT-908 — Data Center Coolant?

Catalog industry categories for Inhibited Ethylene Glycol 35/65 with OAT-908 — Data Center Coolant include Data Center Cooling, HVAC & Geothermal, Oil & Gas. To evaluate it for your process, compare the listed grade, concentration and product specifications with your requirements. Contact Alliance Chemical to confirm any application-specific documentation or certification before ordering.

What are the hazards of Inhibited Ethylene Glycol 35/65 with OAT-908 — Data Center Coolant and where do I find handling guidance?

Per its GHS classification (SDS Section 2), Inhibited Ethylene Glycol 35/65 with OAT-908 — Data Center Coolant carries the signal word Warning and the following hazard statements: H302 HARMFUL IF SWALLOWED; H373 MAY CAUSE DAMAGE TO ORGANS THROUGH PROLONGED OR REPEATED EXPOSURE. Product-specific first aid, fire-fighting, spill response, handling, storage, exposure controls/PPE, and disposal guidance are in SDS Sections 4-8 and 13 — always consult the SDS before use. Download the SDS.

How must Inhibited Ethylene Glycol 35/65 with OAT-908 — Data Center Coolant waste be disposed?

Consult SDS Section 13 for disposal information for Inhibited Ethylene Glycol 35/65 with OAT-908 — Data Center Coolant. Disposal requirements depend on the resulting waste, contamination and location. Have your site's responsible waste professional determine the appropriate waste classification and disposal method. View the SDS.

Does Alliance Chemical provide an SDS and COA for Inhibited Ethylene Glycol 35/65 with OAT-908 — Data Center Coolant?

Search the document library for Inhibited Ethylene Glycol 35/65 with OAT-908 — Data Center Coolant. The SDS is also available here. A sample COA describes specifications and does not establish the results for your shipment. To request a lot-specific COA or confirm document availability, contact Alliance Chemical with the product name and lot number.