Inhibited Propylene Glycol 20/80 OAT Data Center Coolant

Name: Quick Facts: Inhibited Propylene Glycol 20/80 with OAT Inhibitor — Data Center Coolant
Creator: Alliance Chemical
License: https://alliancechemical.com/policies/terms-of-service

Propylene Glycol

Active ingredient: propylene glycol, also known as propane-1,2-diol · 1,2-propanediol · monopropylene glycol · MPG
CAS number: 57-55-6
Formula: C3H8O2
Molecular weight: 76.09 g/mol
Grade: Inhibited
Flash point: Not flammable (aqueous solution)
Boiling point: approx. 101 °C (214 °F) at 760 mmHg

SDS also in

Who uses it

Data center operators, Facility maintenance teams, HVAC and cooling contractors, Industrial cooling system managers

HVAC & Geothermal

Representative industry photos.

Product quick facts

CAS 57-55-6C3H8O2

Inhibited Propylene Glycol 20/80 with OAT Inhibitor — Data Center Coolant (CAS 57-55-6) is an Inhibited-grade liquid with molecular formula C3H8O2 and a molecular weight of 76.09 g/mol. Its active ingredient, propylene glycol, is also known as propane-1,2-diol, 1,2-propanediol, monopropylene glycol and MPG. 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 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 Propylene Glycol 20/80 is a ready-to-use coolant of 20% propylene glycol by weight in deionized water with a nitrite-containing OAT corrosion inhibitor, freeze point approx. 19 °F (-7 °C). Data center, HVAC and facility teams use it in indoor closed loops: CDU technology cooling system (TCS) loops, rear-door heat exchangers and chillers. It comes in sizes from 1 quart to 55-gallon drums and 330-gallon IBC totes, starting at $16.65 (1 quart), and is not regulated by DOT.

The inhibitor package combines sodium nitrite, sodium molybdate, sodium benzoate and triethanolamine with organic-acid inhibitors, formulated for steel, cast iron, copper, brass and solder. Blended at our Taylor, TX facility.

Applications

Data center liquid cooling secondary loops
Coolant distribution unit (CDU) technology cooling system (TCS) loops
Rear-door heat exchanger loops
HVAC chillers & hydronic heating loops
Light freeze protection, to approx. 19 °F (-7 °C)

Specifications

Composition: propylene glycol 19.5–20.5% by weight (w/w); corrosion inhibitor package 1.8–2.2%; deionized water balance
CAS: 57-55-6 (PG), 7732-18-5 (Water); product is a mixture
Nitrite (as NO₂): 480 ppm min.
Density: 1.015–1.020 g/cm³ at 20 °C (calculated)
Density: approx. 1.02 g/mL (8.5 lb/gal)
pH: reported on the lot Certificate of Analysis (typically 7.0–9.0)
Reserve alkalinity: reported on the lot COA
Freeze point: approx. 19 °F (-7 °C); specification 20 °F (-6.7 °C) max
Boiling point: approx. 214 °F (101 °C)
Appearance: clear, colorless to pale yellow liquid; not dyed (dye available on request)

Documentation

Safety Data Sheet (SDS), English, French, Spanish and Japanese
Technical Data Sheet (TDS)
Lot-specific Certificate of Analysis (COA) on request, no charge

Handling

Not classified as hazardous under GHS and not regulated for transport by DOT. Contains sodium nitrite: install as a fresh fill after draining and flushing, do not mix with phosphate-, silicate- or nitrite-free coolants, keep away from strong acids, and avoid galvanized (zinc) surfaces. Refer to the Safety Data Sheet (SDS) for full handling information.

Available sizes: 1 quart through 330-gallon IBC tote. Bulk loads quoted on request.

Not for: direct or incidental food contact, potable water, open recirculation, automotive crankcase, or single-pass cooling.

Frequently asked questions

What is Inhibited Propylene Glycol 20/80?

A ready-to-use heat-transfer fluid: propylene glycol 19.5–20.5% by weight in deionized water, with a nitrite-containing hybrid organic-acid (OAT) corrosion inhibitor package at 1.8–2.2%. The package combines sodium nitrite, sodium molybdate, sodium benzoate and triethanolamine with organic-acid inhibitors. It is blended in Taylor, Texas, and is not dyed.

What is the freeze point of 20% propylene glycol?

The freeze point is approx. 19 °F (-7 °C) at 20% propylene glycol by weight; the specification is 20 °F (-6.7 °C) max. The percentage is by weight, not by volume, so compare it against weight-percent freeze tables.

Should I choose PG 20/80, 25/75 or 30/70?

20/80 carries the least glycol in the line, so it suits indoor closed loops that do not see freezing temperatures, such as CDU technology cooling loops and rear-door heat exchangers inside a conditioned building. If piping, dry coolers or equipment can get near 20 °F, choose 25/75 or 30/70, which carry more glycol and freeze at lower temperatures.

Does it contain nitrite?

Yes. The inhibitor package contains sodium nitrite; the specification is nitrite 480 ppm min. (as NO2). It is not a nitrite-free coolant, so it does not meet a specification that requires one.

Is it hazardous or DOT regulated?

It is not classified as hazardous under OSHA HCS / GHS and is not regulated for transport by DOT, so it ships without a hazmat surcharge. It is not for food contact or potable water. See the Safety Data Sheet for handling guidance.

Which metals is it compatible with?

The inhibitor package is formulated for steel, cast iron, copper, brass and solder. Avoid galvanized (zinc) surfaces and strong acids. Install it as a fresh fill after draining and flushing; do not mix it with phosphate-, silicate- or nitrite-free coolants.

How do I top off or dilute it?

It is supplied ready to use, so do not dilute it further. Top off with the same 20/80 premix to keep glycol and inhibitor on spec; adding water alone lowers both.

Are the SDS, TDS and COA available?

Yes. The Safety Data Sheet (English, French, Spanish and Japanese) and the Technical Data Sheet are published on this page. A lot-specific Certificate of Analysis is available on request at no charge; pH and reserve alkalinity are reported on it.

What sizes are available and what does it cost?

1 quart, 1 gallon, 4-gallon case, 5 gallon, 15- and 55-gallon drums, and 275- and 330-gallon IBC totes, plus multi-packs and pallets. Prices start at $16.65 (1 quart); drum and tote prices are on the size selector. For larger quantities contact sales@alliancechemical.com.

Frequently Asked Questions About Inhibited Propylene Glycol 20/80 with OAT Inhibitor — Data Center Coolant

What is Inhibited Propylene Glycol 20/80 with OAT Inhibitor — Data Center Coolant and what is its chemical formula?

Inhibited Propylene Glycol 20/80 with OAT Inhibitor — Data Center Coolant is listed under CAS 57-55-6 (PubChem reference search). The catalog formula is C3H8O2. The listed molecular weight is 76.09 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 Propylene Glycol 20/80 with OAT Inhibitor — Data Center Coolant?

Catalog reference information for Inhibited Propylene Glycol 20/80 with OAT Inhibitor — Data Center Coolant: form: Liquid; melting point: Freeze point approx. -7 °C (19 °F) at 20 wt% propylene glycol; boiling point: approx. 101 °C (214 °F) at 760 mmHg; flash point: Not flammable (aqueous solution); density at 20 °C: 1.0177 g/cm³; 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 Propylene Glycol 20/80 with OAT Inhibitor — Data Center Coolant does Alliance Chemical offer?

Alliance Chemical lists Inhibited Propylene Glycol 20/80 with OAT Inhibitor — Data Center Coolant in Inhibited grade. 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 Propylene Glycol 20/80 with OAT Inhibitor — Data Center Coolant?

Catalog industry categories for Inhibited Propylene Glycol 20/80 with OAT Inhibitor — Data Center Coolant include Data Center Cooling, HVAC & Geothermal. 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 Propylene Glycol 20/80 with OAT Inhibitor — Data Center Coolant and where do I find handling guidance?

Per its GHS classification (SDS Section 2), Inhibited Propylene Glycol 20/80 with OAT Inhibitor — Data Center Coolant the following hazard statements: NOT CLASSIFIED AS HAZARDOUS UNDER OSHA HCS / GHS.. 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 Propylene Glycol 20/80 with OAT Inhibitor — Data Center Coolant waste be disposed?

Consult SDS Section 13 for disposal information for Inhibited Propylene Glycol 20/80 with OAT Inhibitor — 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 Propylene Glycol 20/80 with OAT Inhibitor — Data Center Coolant?

Search the document library for Inhibited Propylene Glycol 20/80 with OAT Inhibitor — 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.