Product Overview
This product carries its listed grade designation; confirm the lot-specific COA against your requirements. The inhibitor package protects metal surfaces in closed-loop systems — cooling circuits, heat exchangers, chilled-water lines — while the ACS designation confirms the product meets the purity thresholds required for analytical and quality-controlled work.
we distribute this product in our Taylor, TX warehouse and ship it daily in DOT-compliant hazmat packaging. Pack sizes run from 1-quart bottles for bench work up to 330-gallon totes for production-scale fills. Every order ships with safety data sheets and, on request, a lot-specific Certificate of Analysis.
Why This Grade
ACS Grade means the ethylene glycol meets the purity specifications set by the American Chemical Society for reagent chemicals. For a buyer, that translates to tighter quality control on trace contaminants — metals, chloride, sulfate, water content — than a technical or industrial grade would provide. If your process feeds into an analytical method, a QC reference, or a formulation where impurity budgets are narrow, ACS Grade is the right pick.
The "Inhibited" designation adds a corrosion-inhibitor package to the base glycol. Uninhibited ethylene glycol in a metal system will degrade over time, producing organic acids that attack copper, aluminum, and ferrous alloys. Inhibitors neutralize that acid formation and passivate metal surfaces. If you are filling a closed-loop cooling system, a chiller, or any recirculating heat-transfer circuit with mixed metallurgy, the inhibited formula saves you from premature component failure and costly fluid changeouts.
If your application is strictly a bench-scale solvent reaction or a moisture-control formulation where metal contact is not a concern, an uninhibited ACS-grade glycol may be sufficient. But for any system with wetted metal and extended service life, the inhibited version is the practical choice.
Chemical Profile
Ethylene glycol (CAS 107-21-1, molecular formula C₂H₆O₂, molecular weight 62.07 g/mol) is a simple diol — two hydroxyl groups on a two-carbon backbone. That structure makes it fully miscible with water and gives it strong hygroscopic behavior. In its pure form it presents as a clear, colorless, syrupy liquid with no detectable odor. The density is 1.115 at 68 °F, making it noticeably denser than water. Vapor pressure is low — 0.06 mmHg at 68 °F — so it does not readily evaporate at ambient conditions, which is one reason it performs well in closed-loop thermal systems where fluid loss matters. Solubility in water is essentially complete, at 100 mg/mL or greater at 63.5 °F.
Industrial Applications
Ethylene glycol's combination of a low freezing point, high boiling point, and thermal stability makes it a workhorse fluid across several industries.
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Antifreeze and Coolant Formulations. Diluted with water to the target freeze-point depression, inhibited ethylene glycol is the base fluid in most automotive and industrial coolant systems. The inhibitor package in this ACS-grade product makes it suitable for lab-scale coolant testing or pilot formulations where purity consistency matters.
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Heat Transfer Fluid. In industrial chillers, HVAC glycol loops, and process heat exchangers, ethylene glycol serves as the working fluid. Its low vapor pressure keeps the system at low pressure even at elevated temperatures, reducing mechanical stress on seals and fittings.
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Solvent for Chemical Reactions. The diol structure and full water miscibility make ethylene glycol a useful high-boiling solvent in organic synthesis — particularly condensation reactions, esterifications, and polymerizations where you need to drive off water while keeping the reaction medium liquid.
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Hydraulic Fluid. In systems that must operate across a wide temperature range without phase change, ethylene glycol-based hydraulic fluids provide stable viscosity and freeze protection.
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Moisture Control. The hygroscopic nature of ethylene glycol is used in formulations and processes where maintaining a controlled moisture level is necessary — dehumidification systems, gas drying, and certain industrial coatings.
Handling & Storage
Ethylene glycol carries a GHS signal word of Warning (per the product's GHS classification). The two hazard statements to know:
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H302 — Harmful if swallowed (per the product's GHS classification).
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H373 — May cause damage to organs (kidneys) through prolonged or repeated exposure (per the product's GHS classification).
Swallowing is the primary human-health risk. Ethylene glycol is acutely toxic by ingestion even in small volumes, and its sweet taste makes accidental ingestion a real hazard in any setting where food or drink is nearby. Keep containers sealed and clearly labeled at all times.
PPE: Chemical-resistant gloves (nitrile or butyl rubber) and splash goggles at a minimum. In enclosed or poorly ventilated spaces, ensure mechanical ventilation to keep airborne concentrations low — though the vapor pressure is very low, mist generation during transfers can still produce inhalable droplets.
Storage: Store in a cool, dry area away from direct sunlight and heat sources. Use containers made of HDPE, polypropylene, or stainless steel — all compatible with ethylene glycol. Keep away from strong oxidizing agents and strong acids. The primary environmental hazard is liquid release: ethylene glycol is miscible with water and will readily penetrate soil and contaminate groundwater and nearby waterways if spilled. Contain any spill immediately.
Hazmat & Shipping
Canonical transport status is not regulated. Review the current SDS and carrier requirements before shipment.
Documentation
A Safety Data Sheet ships with every order, available in English, Spanish, French, and Japanese. A lot-specific Certificate of Analysis is available on request — ask at the time of order and we will include it with your shipment. A Technical Data Sheet is also on file for this product.
Why Buy from Alliance Chemical
We are a hazmat chemical distributor operating out of Taylor, TX. This product sits in our warehouse, gets packed by our team, and ships under the stated handling schedule on most orders. Every outbound package is built to DOT spec — correct UN marking, correct labels, correct shipping papers — because that is what we do every day across hundreds of SKUs.
Shipping and handling guidance for this product is reviewed by Andre Taki, DOT Hazmat Specialist. If you have questions about transport requirements, container compatibility, or documentation for your receiving dock, our team can answer them before you order.
