50% Propylene Glycol — Technical

Name: 50% Propylene Glycol Technical Grade
Brand: Alliance Chemical
SKU: Y7L-K8M-P3T
Availability: InStock

Description
Product Documents
Chemical Profile

Product Overview

50% Propylene Glycol Technical Grade (PG) is a pre-mixed, clear, colorless liquid solution comprised of Propane-1,2-diol and deionized water. This concentration is optimized for immediate use in industrial thermal management, acting as a reliable heat transfer fluid and antifreeze in closed-loop systems. With a chemical formula of C₃H₈O₂, it offers low toxicity and excellent hygroscopic properties.

While this product meets rigorous purity standards with alignment to USP-NF monographs, it is designated as Technical Grade for industrial applications. It features precise assay control (50 wt%) to ensure consistent freeze protection and viscosity profiles. The solution is widely utilized as a coolant in chillers, a solvent in paints and coatings, and a humectant in chemical processing. Its low vapor pressure and lack of corrosive properties make it safe for handling in standard carbon steel, stainless steel, or polyethylene equipment.

Key Properties

CAS: 57-55-6
Appearance: Clear, colorless liquid
Odor: Odorless to slightly sweet
Molecular Formula: C₃H₈O₂
Density (25°C): ~1.036 g/mL
Freezing Point: Approx -34°C (-29°F) at 50% concentration
Solubility: Completely miscible in water
Grade: Technical Grade

Common Applications

Heat Transfer Fluid: Serves as a primary coolant and antifreeze in HVAC chillers, solar thermal systems, and geothermal loops to prevent freezing and burst pipes.
Industrial Antifreeze: Used in automotive and heavy equipment cooling systems where low toxicity is required compared to ethylene glycol.
Solvent & Carrier: Functions as a solvent for paints, coatings, and resins, improving flow and leveling properties.
Chemical Formulation: Acts as a feedstock or processing aid in the manufacturing of polymer resins and industrial lubricants.
De-icing Agent: Applied in non-aircraft de-icing operations for industrial machinery and surfaces.

Safety & Handling

Store 50% Propylene Glycol in a cool, well-ventilated area away from direct sunlight and strong oxidizing agents. Compatible storage materials include stainless steel, aluminum, and polyethylene. While PG is generally considered low-toxicity, standard industrial hygiene practices should be observed. Wear safety glasses and gloves during handling to prevent skin or eye irritation. In the event of a spill, contain the liquid and dispose of it according to local regulations.

Benefits

Ready-to-Use Concentration – Pre-mixed 50% solution eliminates the need for on-site dilution for many chiller applications.
Freeze Protection – Provides effective burst protection for pipes and systems in sub-freezing environments.
Corrosion Inhibition – Naturally non-corrosive to most metals, extending the lifespan of industrial equipment.
Versatile Utility – High purity allows for use across heating, cooling, and manufacturing sectors.

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Frequently Asked Questions About 50% Propylene Glycol Technical Grade

What is 50% Propylene Glycol Technical Grade and what is its chemical formula?

50% Propylene Glycol Technical Grade is a chemical compound. Alliance Chemical supplies 50% Propylene Glycol Technical Grade for laboratory, industrial, and commercial applications.

What are common industrial applications of 50% Propylene Glycol Technical Grade?

50% Propylene Glycol Technical Grade has applications in laboratory research, manufacturing, and industrial processing.Alliance Chemical provides the documentation and quality certifications required for use in regulated environments.

What PPE is required when handling 50% Propylene Glycol Technical Grade?

OSHA-mandated PPE per 29 CFR 1910.132-138:Chemical-resistant gloves (nitrile/neoprene), safety goggles, lab coat, closed-toe chemical-resistant footwear. 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 50% Propylene Glycol Technical Grade?

Store perOSHA standards: Cool, dry, ventilated area. Temperature range:15-25°C. Segregate from:incompatible materials per SDS Section 10. Maximum storage:2-3 years unopened.

What is the emergency spill procedure for 50% Propylene Glycol Technical Grade?

Emergency response per EPA SPCC (40 CFR 112) and OSHA 29 CFR 1910.120: (1) Alert personnel, evacuate area to 50 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.

How must 50% Propylene Glycol Technical Grade waste be disposed?

Disposal per RCRA (40 CFR 261-265):Evaluate per 40 CFR 261. 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 50% Propylene Glycol Technical Grade?

Yes. Alliance Chemical provides a Safety Data Sheet (SDS) and Certificate of Analysis (COA) for every lot of 50% 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.