Dark mode
Ask a question
Product Overview
Propylene Glycol Technical Grade is a high-purity (typically 99.6%), colorless, and odorless liquid widely used in industrial applications. Also known as Propane-1,2-diol, MPG, or simply PG, this hygroscopic diol serves as a critical component in heat transfer fluids, industrial coolants, and chemical manufacturing. Its high boiling point (188.2°C) and low volatility make it an effective carrier solvent and intermediate for resin and polymer production.
This technical grade material provides dependable purity for process streams where moisture control and viscosity management are essential. With a density of approximately 1.037 g/mL, it offers consistent mass balance in formulation. Propylene Glycol Technical Grade is compatible with water and various organic solvents, making it a versatile solution for freeze point depression in HVAC systems and as a raw material in the synthesis of polyesters and urethanes.
Key Properties
- Appearance: Clear, colorless liquid
- Chemical Formula: C₃H₈O₂
- CAS Number: 57-55-6
- Molecular Weight: 76.09 g/mol
- Assay: 99.0–100.5% (Typical 99.6%)
- Boiling Point: 188.2°C
- Freezing Point: -59°C
- Specific Gravity (20°C): 1.036–1.038
- Viscosity (25°C): 59 cP
- Water Content: ≤ 0.5%
- Acidity: ≤ 0.1 meq/kg
Common Industrial Applications
- Heat Transfer Fluids: Used extensively in industrial chillers, HVAC systems, and closed-loop cooling systems to lower the freezing point of water and provide burst protection for pipes.
- Industrial Antifreeze & De-icing: A primary ingredient in non-toxic antifreeze formulations for engines, sprinkler systems, and aircraft de-icing fluids due to its freeze-depressing capabilities.
- Chemical Intermediate: Serves as a raw material in the production of high-performance unsaturated polyester resins (UPR), polyurethanes, and paints/coatings.
- Industrial Solvent: Acts as a solvent for gums, resins, and dyes in the printing and textile industries, as well as a stabilizer in hydraulic fluids.
- Surface Coatings: Used in the formulation of paints, varnishes, and lacquers to control viscosity and drying times.
Safety & Handling
Handle Propylene Glycol Technical Grade in accordance with standard industrial hygiene practices. While it exhibits low toxicity, proper PPE including gloves and safety goggles should be worn to prevent skin and eye irritation. Store in a cool, dry, well-ventilated area away from direct sunlight. Ensure containers—typically HDPE or steel—are tightly sealed to prevent moisture absorption (hygroscopic).
Storage: Keep containers closed when not in use. Store away from strong oxidizing agents.
Transport: See SDS for specific transport classifications regarding bulk shipments (UN 3082).
Related Products
| Property | Value |
|---|---|
| Molecular Weight | 76.09 g/mol |
| Formula | C3H8O2 |
| Assay | 100% |
| Flash Point | 104 |
| Form | Liquid |
| Solubility | Highly water-soluble, miscible with organic solvents |
| Appearance | Clear, slightly viscous colorless liquid |
| Melting Point | -59 °C |
| Boiling Point | 188 °C |
| Industry | Industrial, Chemical Manufacturing, Research, Materials Processing |
Frequently Asked Questions About Propylene Glycol Technical Grade
What is Propylene Glycol Technical Grade and what is its chemical formula?
Propylene Glycol Technical Grade 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. Alliance Chemical supplies Propylene Glycol Technical Grade for laboratory, industrial, and commercial applications.
What are the physical properties of Propylene Glycol Technical Grade?
According to the NIOSH Pocket Guide to Chemical Hazards, Propylene Glycol Technical Grade is supplied as a clear, slightly viscous colorless liquid. It has a melting point of -59°C, a boiling point of 188°C, a flash point of 104. Solubility: Highly water-soluble, miscible with organic solvents.
What grade and purity of Propylene Glycol Technical Grade does Alliance Chemical offer?
Alliance Chemical offers Propylene Glycol Technical Grade with a purity assay of 100%. 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 Technical Grade?
Propylene Glycol Technical Grade serves a wide range of sectors, including Industrial, Chemical Manufacturing, Research, and Materials Processing.Alliance Chemical provides the documentation and quality certifications required for use in regulated environments.
What PPE is required when handling Propylene Glycol Technical Grade?
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 Technical Grade?
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 Technical Grade?
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 Technical Grade?
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 Technical Grade 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 Technical Grade?
Yes. Alliance Chemical provides a Safety Data Sheet (SDS) and Certificate of Analysis (COA) for every lot of Propylene Glycol Technical Grade. 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.
Learn More About This Product
Propylene Glycol + DI Water in Thermal Systems: The Practical Guide
Learn how to mix propylene glycol and DI...
Data Center Glycol Inhibitor Chemistry Guide | OAT vs NOAT vs HOAT
Understanding inhibitor chemistry is critical for data center...
Complete Guide to Winter Vehicle Antifreeze & Coolant Selection
Expert guide to selecting the right antifreeze concentration...
Advanced Data Center Cooling Chemistry Part 2: When Theory Meets Reality
Yesterday's AWS outage affected millions worldwide. The root...
E9C-2NE-L4B
$19.04
Unit price
Compare Products
| Price |
|---|
| SKU |
| Rating |
| Discount |
| Vendor |
| Tags |
| Weight |
| Stock |
| Short Description |