Dark mode
Ask a question
Commercial Fulfillment Snapshot
Buy Propylene Glycol 20% Inhibited with faster decisions and fewer back-and-forth emails.
Ships from Taylor, Texas. In-stock orders placed before 1:00 PM CT (Mon-Thu) and before 12:00 PM CT (Fri) typically ship same business day. Order online 24/7.
Who Buys This
- HVAC contractors
- building maintenance teams
- hydronic system operators
- facility engineers
Purity / Grade Guide
- Inhibited formulation for closed-loop metal systems
- Selected when corrosion control matters as much as freeze protection
- Better fit than uninhibited glycol for recirculating equipment
Pack Sizes
- 1 Quart: laboratory and testing use
- 1 Gallon: maintenance and routine handling
- 5 Gallon: shop and facility operations
- 15 Gallon: mid-volume process work
- 55 Gallon: bulk production support
- 275 Gallon and 330 Gallon: tote-based bulk supply
SDS / COA / TDS
- Safety Data Sheet provided
- Technical Data Sheet provided
- Certificate of Analysis available on request
- Lot traceability supported through Alliance Chemical
Small Packs: UPS Ground nationwide for pints, quarts, and gallons.
LTL / FTL: ABF, SEFL, Saia, XPO, and partner carriers for pails, drums, totes, and full truckloads.
Support: Email or call for freight options, hazardous-material routing, and lead-time confirmation.
Product Overview
Propylene Glycol 20% Inhibited is a pre-mixed aqueous heat transfer fluid formulated with 20% propylene glycol and a corrosion inhibitor package for closed-loop industrial systems. This ready-to-use dilution reduces on-site mixing errors and provides light freeze protection for HVAC loops, hydronic systems, and general process cooling where equipment protection matters as much as thermal performance.
The inhibited formulation is designed to help buffer pH and reduce corrosion on common system metals such as steel, copper, brass, and stainless steel. Compared with uninhibited glycol solutions, it is better suited for recirculating systems that need both freeze protection and longer equipment life.
Key Properties
- Concentration: 20% Propylene Glycol Solution
- Grade: Inhibited for closed-loop system protection
- Appearance: Clear, colorless liquid
- Formula: C3H8O2
- CAS Number: 57-55-6
- Specific Gravity (20°C): 1.012
- Solubility: Fully miscible with water
- Typical Use Profile: Mild-climate freeze protection and closed-loop corrosion control
Common Applications
- HVAC Loops: Provides light freeze protection for closed-loop heating and cooling systems in moderate climates.
- Hydronic Heating: Helps protect dormant lines and mechanical equipment from seasonal temperature swings.
- Process Cooling: Used in industrial circulation loops where a low-toxicity glycol solution is preferred.
- Facility Maintenance: Useful for seasonal protection in backup systems, piping jackets, and small recirculating equipment.
Safety Precautions
Store in a cool, dry, well-ventilated area away from direct sunlight and strong oxidizing materials. Wear appropriate personal protective equipment (PPE), including gloves and eye protection, during handling. For detailed storage, first aid, and spill-response guidance, refer to the Safety Data Sheet (SDS).
Related Products
| Property | Value |
|---|---|
| Molecular Weight | 76.09 g/mol g/mol |
| Formula | C3H8O2 |
| Assay | 20% |
| Grade | Technical |
| Flash Point | 104°C (pure) |
| Form | Liquid |
| Solubility | Fully miscible with water |
| Appearance | Clear, colorless liquid |
| Melting Point | -59°C °C |
| Boiling Point | 188°C °C |
| Specific Gravity | 1.012 |
| Industry | HVAC, Hydronic Heating, Process Cooling, Building Systems |
Frequently Asked Questions About Propylene Glycol 20% Inhibited
What is Propylene Glycol 20% Inhibited and what is its chemical formula?
Propylene Glycol 20% Inhibited is a chemical compound with the molecular formula C3H8O2, registered under CAS Number 57-55-6 by the Chemical Abstracts Service (PubChem), with a molecular weight of 76.09 g/mol g/mol. Alliance Chemical supplies Propylene Glycol 20% Inhibited in Technical grade for laboratory, industrial, and commercial applications.
What are the physical properties of Propylene Glycol 20% Inhibited?
According to the NIOSH Pocket Guide to Chemical Hazards, Propylene Glycol 20% Inhibited is supplied as a clear, colorless liquid. It has a melting point of -59°C°C, a boiling point of 188°C°C, a flash point of 104°C (pure). The specific gravity is 1.012 relative to water. Solubility: Fully miscible with water.
What grade and purity of Propylene Glycol 20% Inhibited does Alliance Chemical offer?
Alliance Chemical offers Propylene Glycol 20% Inhibited in Technical grade with a purity assay of 20%. Every lot ships with a Certificate of Analysis (COA) and Safety Data Sheet (SDS) prepared in accordance with OSHA Hazard Communication Standard 29 CFR 1910.1200 and GHS Revision 7. Download SDS.
What are common industrial applications of Propylene Glycol 20% Inhibited?
Propylene Glycol 20% Inhibited serves a wide range of sectors, including HVAC, Hydronic Heating, Process Cooling, and Building Systems.Alliance Chemical provides the documentation and quality certifications required for use in regulated environments.
What PPE is required when handling Propylene Glycol 20% Inhibited?
OSHA-mandated PPE per 29 CFR 1910.132-138:Nitrile gloves (8+ mil), safety goggles, flame-resistant clothing, grounded footwear, closed-toe chemical-resistant footwear. Respiratory protection (organic vapor cartridge) required in areas exceeding PEL/TLV per 29 CFR 1910.134. Emergency eyewash station and safety shower must be accessible within 10 seconds per ANSI Z358.1. Consult the SDS available from Alliance Chemical for complete PPE requirements.
What are the storage requirements for Propylene Glycol 20% Inhibited?
Store perOSHA 29 CFR 1910.106: Approved flammable storage cabinet, maximum 60 gallons per cabinet, grounding/bonding required. Temperature range:15-25°C. Segregate from:oxidizers, ignition sources. Maximum storage:2-3 years unopened.
What is the emergency spill procedure for Propylene Glycol 20% Inhibited?
Emergency response per EPA SPCC (40 CFR 112) and OSHA 29 CFR 1910.120: (1) Alert personnel, evacuate area to 100 feet. (2) Eliminate ignition sources if flammable. (3) Don PPE per SDS Section 8. (4) Stop leak if safe; use emergency shutoffs. (5) Contain with non-combustible absorbent materials, dike with sand/earth. (6)Absorb with vermiculite or commercial spill kits. (7) Collect in DOT-approved containers, label as hazardous waste. Check 40 CFR 302.4 for Reportable Quantity. Emergency: Chemtel 1-800-255-3924 (24/7). Non-emergency: Alliance Chemical 512-365-6838.
What is the DOT shipping classification for Propylene Glycol 20% Inhibited?
DOT Classification per 49 CFR 172.101:UN1993 (Flammable Liquid, N.O.S.), Hazard Class3 (Flammable), Packing GroupII/III. Requires: Hazmat shipping papers (49 CFR 172.200), UN specification packaging (49 CFR 173), hazmat labels (172.400). Alliance Chemical ships all orders in DOT-compliant packaging with proper documentation.
How must Propylene Glycol 20% Inhibited waste be disposed?
Disposal per RCRA (40 CFR 261-265):Characteristic waste D001 (Ignitable, flash point <60°C). Generator requirements: EPA ID number required if >100 kg/month (40 CFR 262.12). Use EPA-permitted Treatment, Storage, Disposal Facility (TSDF). Never discharge to sewer without POTW written approval (40 CFR 403). Container disposal: Triple rinse (40 CFR 261.7), offer for reconditioning/recycling. State regulations may be more stringent — check with your local environmental agency. Consult the Alliance Chemical SDS for product-specific disposal guidance.
Does Alliance Chemical provide an SDS and COA for Propylene Glycol 20% Inhibited?
Yes. Alliance Chemical provides a Safety Data Sheet (SDS) and Certificate of Analysis (COA) for every lot of Propylene Glycol 20% Inhibited. The SDS is prepared in accordance with OSHA Hazard Communication Standard 29 CFR 1910.1200 and the Globally Harmonized System (GHS) Revision 7, covering all 16 required sections including hazard identification, first aid measures, firefighting measures, handling and storage, exposure controls, and regulatory information. The SDS is available for download directly from this product page. COAs are available upon request by contacting Alliance Chemical at 512-365-6838.
3ZF-2W3-8G3
$19.36
Unit price
Compare Products
| Price |
|---|
| SKU |
| Rating |
| Discount |
| Vendor |
| Tags |
| Weight |
| Stock |
| Short Description |