Methanol vs Ethylene Glycol
Comprehensive comparison of Methanol and Ethylene Glycol including physical properties, applications, safety considerations, and pricing. Alliance Chemical supplies both chemicals in various grades and concentrations.
Quick Comparison Summary
Physical & Chemical Properties Comparison
| Property | Methanol | Ethylene Glycol | Key Difference |
|---|---|---|---|
| Boiling Point | 64.7 °C | 197.3 °C | Ethylene Glycol boils 132.6°C higher |
| Flash Point ⚠️ | 11 °C | 111 °C | Methanol is more flammable |
| Density | 0.791 g/cm³ | 1.113 g/cm³ | Ethylene Glycol is denser |
| Water Solubility | Miscible with water | Miscible with water | Both fully water soluble |
| pH | N/A | 7.0 | Data not available for direct comparison |
| Molecular Weight | 32.04 g/mol | 62.07 g/mol | Ethylene Glycol is heavier molecule |
| Melting Point | -97.6 °C | -13 °C | Ethylene Glycol melts 84.6°C higher |
| Vapor Pressure | 127 mmHg at 25°C | 0.06 mmHg at 20 °C | Methanol is more volatile |
| Auto-ignition Temp ⚠️ | 464 °C | 410 °C | Ethylene Glycol auto-ignites at lower temp |
| Vapor Density | 1.11 (air = 1) | 2.14 (air = 1) | Ethylene Glycol vapors sink more |
| Appearance | Clear, colorless liquid | Clear, colorless liquid | Similar appearance |
| Odor | Alcoholic | Odorless |
Data sourced from PubChem (NIH), OSHA Technical Guidelines, and Alliance Chemical laboratory analysis. Last verified March 2026.
Applications & Use Cases
Methanol Best For:
- Industrial solvent
- Laboratory reagent
- Chemical intermediate
- Fuel additive
- Production of formaldehyde
Ethylene Glycol Best For:
- Antifreeze
- Engine coolant
- Heat transfer fluid
- Industrial solvent
- Plasticizer feedstock
Choosing Between Them
The right choice depends on your specific application, required purity, and handling capabilities. Contact our team for guidance on which chemical best fits your needs.
Safety & Handling Comparison
Storage Requirements
Always store in original containers in a cool, well-ventilated area per NFPA 30 guidelines. Refer to each product's SDS for specific storage temperature ranges and incompatible materials.
PPE Requirements
At minimum: chemical-resistant gloves, safety goggles, and adequate ventilation per OSHA 29 CFR 1910.132-138. Check each SDS below for chemical-specific PPE requirements.
Fire Hazard
Methanol has a lower flash point and requires extra fire precautions.
Safety Data Sheets (SDS)
Which Chemical Should You Choose?
Decision Snapshot
| Decision Factor | Better Fit | Why |
|---|---|---|
| Evaporation Profile | Methanol | Lower boiling point supports faster flash-off. |
| Fire Safety Margin | Ethylene Glycol | Higher flash point generally reduces ignition risk in handling and storage. |
| Application Breadth | Tie | Compares distinct listed use cases to avoid generic recommendations. |
| Purity Flexibility | Standard grades | Based on availability of 99%+ concentration options in current product metadata. |
Choose Methanol if:
- You specifically need support for laboratory reagent applications.
- You specifically need support for chemical intermediate applications.
- You want a faster-evaporating solvent for quick-dry production steps.
- You can manage stricter flammable-liquid controls for lower flash-point performance.
Choose Ethylene Glycol if:
- You specifically need support for antifreeze applications.
- You specifically need support for engine coolant applications.
- You need a higher-boiling solvent that stays in-process longer.
- Fire-risk controls are a priority and you prefer the higher flash-point option.
Commercial & Fulfillment Snapshot
Built for purchasing teams that need predictable dispatch, compliant documentation, and freight flexibility from parcel to full truckload.
| Procurement Advantage | Methanol | Ethylene Glycol |
|---|---|---|
| Grade & Concentration Coverage | multiple concentration options by application with industrial/lab procurement support. | multiple concentration options by application with industrial/lab procurement support. |
| Packaging Depth | small packs through bulk freight quantities for parcel, pallet, and truckload planning. | 1 Quart to 330 Gallon IBC Tote for parcel, pallet, and truckload planning. |
| Dispatch SLA | Order by 1 PM CT (Mon-Thu) or noon CT Friday for same-business-day outbound from Taylor, TX. | Order by 1 PM CT (Mon-Thu) or noon CT Friday for same-business-day outbound from Taylor, TX. |
| Freight Optionality | UPS Ground for small packs plus LTL/FTL lanes through ABF, SEFL, Saia, XPO, and partner carriers. | UPS Ground for small packs plus LTL/FTL lanes through ABF, SEFL, Saia, XPO, and partner carriers. |
| Compliance Readiness | SDS ready now; COA/TDS support available pre-PO and post-order. | SDS ready now; COA/TDS support available pre-PO and post-order. |
| Bulk Procurement CTA | Request bulk quote or call (512) 365-6838. | Request bulk quote or call (512) 365-6838. |
Need Help Deciding? Our technical team can help you choose the right chemical for your specific application. Email sales@alliancechemical.com for expert guidance.
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Alliance Chemical supplies both Methanol and Ethylene Glycol in various grades and package sizes.