Propylene Glycol 20% Inhibited

Name: Quick Facts: Propylene Glycol 20% Inhibited
Creator: Alliance Chemical
License: https://alliancechemical.com/policies/terms-of-service

Product quick facts

CAS 57-55-6C3H8O2

Propylene Glycol 20% Inhibited (CAS 57-55-6) is a 20% Technical-grade liquid with molecular formula C3H8O2 and a molecular weight of 76.09 g/mol, for industrial and manufacturing applications. It has a flash point of 104°C (pure). Alliance Chemical supplies this product in 7 container sizes from 1 Quart to 330 Gallon (16 pack options) with 1-2 business day shipping from Taylor, TX on in-stock orders, plus SDS and lot-specific Certificate of Analysis.

Pack sizes 7 container sizes (1 Quart to 330 Gallon) · 16 pack options
Purity / spec 20% Technical
Lead time In-stock orders placed by Mon-Thu 1 PM CT / Fri 12 PM CT typically ship within 1-2 business days.
SDS / COA Download SDS; lot-specific COA available on request.
Regional availability View state-by-state shipping pages

Request Bulk Quote (512) 365-6838

Quick Answer

What is Propylene Glycol 20% Inhibited used for, and what should buyers verify before ordering?

Propylene Glycol 20% Inhibited is supplied at 20% in Technical grade . Buyers should confirm pack size, grade, SDS, COA needs, and freight requirements before purchase.

Assay: 20%
Grade: Technical
Documents: SDS and lot-specific COA support
Shipping: UPS for small packs; LTL/FTL for pails, drums, totes, and bulk orders

Commercial Fulfillment Snapshot

Buy Propylene Glycol 20% Inhibited with faster decisions and fewer back-and-forth emails.

In-stock orders placed by Mon-Thu 1 PM CT / Fri 12 PM CT typically ship within 1-2 business days. Order online 24/7.

Get Bulk Quote → Call (512) 365-6838

Technical Documents

SDS EN SDS FR SDS ES SDS JA TDS COA

Live, always-current docs · lot-specific COA issued per shipment batch.

Who Buys This

HVAC service contractors
Facility maintenance teams
Industrial equipment operators
Mechanical system installers

Purity / Grade Guide

Industrial & lab use
Inhibited formula for systems
Verified purity COA included
SDS with every order

Pack Sizes

1 Quart: lab & small jobs
1 Gallon: shop & maintenance
5 Gallon: production & regular use
15 Gallon: mid-volume operations
55 Gallon: bulk drum
275 Gallon: high-volume tote
330 Gallon: max-volume tote

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.

Description
Product Documents
Chemical Profile

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. This inhibited formulation includes corrosion inhibitors to protect metal piping and heat exchange equipment in closed-loop systems.

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

Chemical Name: Propylene Glycol
Synonyms: Propane-1,2-diol, MPG, PG
Chemical Formula: C3H8O2
CAS Number: 57-55-6
Molecular Weight: 76.09 g/mol
Concentration: 20% Propylene Glycol Solution
Grade: Inhibited
Specific Gravity (20°C): 1.012
Boiling Point: N/A
Flash Point: N/A
Appearance: Clear, colorless liquid
Solubility: Fully miscible with water

Common Applications

Heat Transfer & Antifreeze: Non-toxic coolant for HVAC glycol loops, food processing chillers, and solar thermal systems.
Food & Beverage Processing: Humectant, solvent, and preservative in food products where low toxicity is required.
Pharmaceutical Manufacturing: Excipient and solvent for drug formulations meeting USP purity requirements.
Cosmetic Formulations: Moisturizer, emulsifier, and carrier solvent in skincare and personal care products.
Industrial Deicing: Aircraft and runway deicing fluid component where environmental safety is a priority.

Safety Precautions

Propylene Glycol solutions have a low toxicity profile and are not regulated as hazardous for transport. Handle with standard industrial hygiene practices. Store in clean HDPE or stainless steel containers in a cool, dry area away from direct sunlight and strong oxidizers.

PPE Requirements: Wear chemical-resistant gloves and safety goggles as a precaution during handling. In case of eye contact, rinse with water. In case of prolonged skin contact, wash with soap and water. Refer to the Safety Data Sheet (SDS) for detailed handling and storage information.

Shipping: Not regulated as hazardous material for transport.

Benefits

Ready-to-Use Strength: Pre-diluted to the target concentration, minimizing dilution errors and simplifying deployment.
Low-Toxicity Profile: Preferred where incidental-contact concerns rule out ethylene glycol-based alternatives.
Broad Packaging Range: Available from small containers to IBC totes for flexible supply management.

Related Products

Property	Value
Molecular Weight	76.09 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
Boiling Point	188°C
Specific Gravity	1.012
Industry	HVAC & Cooling

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. 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?

As supplied by Alliance Chemical, Propylene Glycol 20% Inhibited is supplied as a clear, colorless liquid. It has a melting point of -59°C, a boiling point of 188°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%. A lot-specific Certificate of Analysis (COA) is available for every shipment, and each product ships with a 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 & Cooling.Alliance Chemical provides the documentation and quality certifications required for use in regulated environments.

What are the hazards of Propylene Glycol 20% Inhibited and where do I find handling guidance?

Per its GHS classification (SDS Section 2), Propylene Glycol 20% Inhibited the following hazard statements: NOT CLASSIFIED AS HAZARDOUS UNDER GHS BASED ON AVAILABLE DATA.. Product-specific first aid, fire-fighting, spill response, handling, storage, exposure controls/PPE, and disposal guidance are in SDS Sections 4-8 and 13 — always consult the SDS before use. Download the SDS.

How must Propylene Glycol 20% Inhibited waste be disposed?

Disposal per RCRA (40 CFR 261-265): the waste characterization under 40 CFR 261 is the generator's responsibility — see SDS Section 13 for product-specific guidance. Generator requirements: EPA ID number required if >100 kg/month (40 CFR 262.12). Use an 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.

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.