Propylene Glycol Monoethyl Ether Acetate 99.5% (CAS 54839-24-6) Industrial Grade: Properties, Applications & Safety Guide

Propylene Glycol Monoethyl Ether Acetate (PEEA) CAS NO.: 54839-24-6 Grade: Industrial 99.5% High Purity For coating formulators, ink manufacturers, electronic photoresist developers and precision cleaning factories, glycol ether acetate solvents directly determine film leveling, pigment dispersion and finished product yield. Among all propylene-based ether acetate solvents, 99.5% industrial PEEA stands out for balanced solvency, mild slow evaporation, low odor and reproductive safety compared to traditional E-series glycol ethers. Many procurement teams and formula engineers struggle to tell whether PEEA fits their production lines; picking mismatched solvent will trigger poor gloss, screen clogging, residual flux contamination and unstable batch formulation. This guide breaks down the core physical and chemical properties of 99.5% industrial PEEA, its core industrial application scenarios, head-to-head comparison with mainstream competing solvents, complete workplace operation safety standards, and practical tips for selecting a stable PEEA manufacturer. For chemical buyers and lab formulators, this article delivers clear reference to make cost-effective, production-friendly solvent purchasing decisions. 

 What Is 99.5% Industrial Grade Propylene Glycol Monoethyl Ether Acetate (PEEA)? 

(PEEA CAS 54839-24-6 Basic Product Profile) Propylene glycol monoethyl ether acetate, abbreviated as PEEA, also named 1-Ethoxy-2-propyl acetate, is a P-series glycol ether acetate synthesized by esterification of propylene glycol monoethyl ether and acetic acid, molecular formula C₇H₁₄O₃, molecular weight 146.18. Our industrial grade standard guarantees minimum 99.5% main ester content, strictly controlled water content below 0.10% and ultra-low acid value ≤0.03%, eliminating impurity interference in delicate industrial formulations. It presents as clear, water-white transparent liquid with a faint mild sweet ester scent, no harsh irritating volatile fumes. Its biggest competitive edge is dual functional molecular structure with ether and ester groups, delivering balanced compatibility: partially soluble in water and fully miscible with most organic solvents including alcohols, ketones, esters and hydrocarbon oils. Unlike ethylene glycol monomethyl ether (EGME) and other E-series glycol ethers with reproductive toxicity risks, P-series PEEA carries low toxicity, non-reproductive hazard classification and complies with global low-VOC industrial emission regulations, widely used as a safe replacement for restricted E-series ether solvents in export-grade production lines. 

 Key Properties of 99.5% Industrial PEEA For industrial purchasers, solvent intrinsic performance directly affects coating finish quality, printing smoothness and continuous production stability. Below are four core advantages that make 99.5% PEEA irreplaceable across multiple manufacturing sectors: 

 Balanced, Wide-Ranging Solvency Capacity PEEA’s dual ether-ester molecular structure balances polar and non-polar dissolving power. The ester segment dissolves acrylic, epoxy, polyurethane, nitrocellulose and polyester resins commonly used in coatings and inks; the ether segment breaks down mineral grease, processing residues and printing color pigments without causing flocculation, haze or sediment in mixed formulations. Formulators frequently blend PEEA with fast-evaporating thinner solvents to adjust system viscosity, reducing the number of auxiliary co-solvents required and simplifying complex formula design. It works seamlessly for both solvent-based and waterborne mixed systems, filling the gap between single ketone or ester solvents with one versatile raw material. 

Mild, Controllable Slow Evaporation Rate PEEA features a boiling point of 158°C and low room-temperature vapor pressure, delivering a gentle slow evaporation profile without overly fast or ultra-slow drying speed. This characteristic brings tangible production benefits: - For baking industrial coatings: Greatly extends coating pot life, leaves sufficient time for resin leveling, erases common surface defects like orange peel, brush marks and blushing to boost final coating gloss and uniformity. - For screen & gravure printing inks: Avoids premature ink drying on printing screens, cuts frequent screen cleaning downtime and ensures even pigment spreading for consistent color reproduction. - For precision electronic cleaning: Retains enough active working time to fully dissolve flux, photoresist residues and micro grease before natural volatilization, leaving zero ionic residue on circuit surfaces.

### Outstanding Formulation Compatibility & Long-Term Stability Our 99.5% high-purity PEEA removes low-boiling impurities and acidic residuals that trigger formulation breakdown. It mixes uniformly with all conventional industrial solvents without phase separation, viscosity drifting or sediment formation during long-term storage of finished paints, inks and cleaning agents. No extra stabilizers are needed when incorporating PEEA into most formula systems, which simplifies production processes and guarantees consistent finished product quality across mass production batches. It also shows stable chemical resistance against mild acids and alkalis under normal industrial operation temperatures, avoiding unexpected side reactions during mixing and construction. ###

 Low Odor & Eco-Friendly, Low-Toxicity Profile Compared with aromatic solvents, cyclohexanone and E-series glycol ethers, PEEA releases only faint sweet ester vapor with minimal respiratory and skin irritation for on-site workers. As a P-series propylene glycol ether acetate, it is free of reproductive toxic ingredients restricted by EU REACH and US OSHA standards, classified low-VOC and readily biodegradable to reduce factory wastewater treatment burden. Workshops with long-term continuous coating and ink mixing operations can effectively cut occupational health risks after switching to PEEA. 

 Main Industrial Applications of 99.5% PEEA (CAS 54839-24-6) Thanks to its balanced solvency, controllable slow evaporation, broad formulation compatibility and low-toxicity eco performance, industrial grade 99.5% PEEA is widely adopted in coatings, printing inks, electronic manufacturing, precision cleaning and fine chemical synthesis. The table below summarizes its core industrial application scenarios: |Industry|Core Functions of 99.5% PEEA| |---|---| |Industrial & Automotive Coatings|High-boiling co-solvent, leveling agent, anti-blushing additive for baking enamels, coil coatings and high-solid wood paints| |Printing & Graphic Inks|Pigment dispersant, viscosity regulator for screen, gravure, plastic and PCB solder mask inks| |Electronics Manufacturing|Photoresist carrier, edge bead remover, precision solvent for circuit board flux cleaning| |Precision Industrial Cleaning|Degreaser for optical parts, metal stamping residues and electronic component organic contaminants| |Fine Chemical Processing|Organic synthesis carrier, coalescing agent for waterborne polymer dispersions, pharmaceutical intermediate solvent| 

 Industrial & Automotive Coatings PEEA acts as a premium high-boiling co-solvent for automotive OEM baking finishes, metal coil coatings, furniture wood lacquers and high-solid water-based paints. Its moderate slow evaporation optimizes resin flow during high-temperature baking processes, eliminating white blushing defects caused by rapid solvent escape. Formulators rely on it to lift coating surface gloss and uniformity without adding expensive imported reflow solvents. In waterborne low-VOC paint systems, PEEA serves as a powerful coupling agent bridging resin and water phases to prevent resin precipitation during warehouse storage. 

Screen & PCB Printing Inks For screen printing, plastic gravure and circuit board solder mask inks, 99.5% PEEA solves two common production pain points: pigment agglomeration and frequent screen clogging. It disperses color pigments evenly to deliver sharp, consistent color reproduction and extends open screen working time, cutting labor costs from repeated screen washing. Electronic ink manufacturers prioritize its ultra-low impurity content to avoid ionic contamination that causes circuit short-circuit issues on finished PCBs. 

 Semiconductor & Display Electronics Manufacturing PEEA is a mainstream carrier solvent for positive photoresist formulations in wafer and LCD panel production. It dissolves photoresist polymers uniformly for smooth spin coating, and works as edge bead remover to clean excess photoresist around wafer edges without damaging patterned circuits. In post-welding processes, it removes solder flux and light photoresist residues thoroughly, with zero residual metal ions that compromise electronic component stability.

Precision Parts Degreasing & Industrial Cleaning Optical lenses, precision metal stamping parts and electronic assemblies accumulate micro grease, release agent residues and processing oil after machining. PEEA dissolves organic contaminants that water-based cleaners cannot strip, with its controlled evaporation rate providing ample contact time for full residue dissolution before air drying or wiping. Its high purity avoids surface staining and fogging on optical components, making it a top choice for high-end precision cleaning lines. 

Fine Chemical Synthesis & Waterborne Polymers PEEA works as an efficient coalescing agent for aqueous acrylic and ethylcellulose dispersions, lowering the minimum film-forming temperature (MFFT) to form complete, crack-free polymer films at room temperature. It also serves as an inert carrier solvent for pharmaceutical spray drying and amorphous solid dispersion production, controlling particle drying kinetics to improve finished powder stability.

PEEA vs Other Common Glycol Ether Acetate Solvents If you are comparing solvent options for your production formula, this comparison table clarifies the differences between 99.5% PEEA, ethylene glycol monomethyl ether (EGME) and propylene glycol methyl ether acetate (PMA) to simplify your solvent selection decision: |Glycol Ether Solvents|Basic Description|Main Characteristics|Typical Applications| |---|---|---|---| |99.5% PEEA (CAS 54839-24-6)|Propylene-based ethyl ether acetate, low toxicity|Balanced solvency, mild slow evaporation, low odor, REACH compliant low reproductive hazard|Automotive baking coatings, PCB photoresists, screen printing inks, precision electronic cleaning| |Ethylene Glycol Monomethyl Ether (EGME)|E-series glycol ether solvent|Moderate evaporation, strong solvency, reproductive toxicity restrictions globally|Low-grade general coatings, basic industrial cleaners (limited export use)| |PMA (Propylene Glycol Methyl Ether Acetate)|Propylene methyl ether acetate, classic electronic solvent|Faster evaporation than PEEA, smaller molecular weight, narrower resin compatibility|Semiconductor photoresist thinning, simple solvent-based cleaners| EGME faces strict usage limits across Europe, North America and many Asian markets due to proven reproductive toxicity risks. PMA evaporates noticeably faster than PEEA, leading to insufficient leveling time for thick-film coatings and large-format screen printing. 99.5% industrial PEEA strikes a perfect balance of environmental compliance, extended working window and universal resin compatibility, making it the preferred upgrade solvent for factories upgrading to low-toxicity, high-quality production lines. 

Safety Considerations of 99.5% PEEA Like all flammable industrial ester solvents, PEEA requires standardized operation, storage and transportation protocols to eliminate workshop hazards, especially in enclosed low-ventilation coating, ink mixing and electronic processing workshops. Below are mandatory safety precautions for all on-site operators: ###

Mandatory Workshop Ventilation PEEA releases low-concentration vapor at room temperature; long-term continuous inhalation of accumulated vapor may trigger mild headaches or throat discomfort. All PEEA mixing, coating and cleaning stations must install exhaust fans, local air extraction systems or full workshop air circulation devices. Avoid large-batch solvent blending inside fully sealed rooms without ventilation equipment. 

 Complete Personal Protective Equipment (PPE) PEEA can irritate skin and eye mucous membranes upon direct contact. All staff handling PEEA must wear full protective gear as required: - Chemical-resistant nitrile gloves for all liquid transfer and blending operations - Impact-resistant safety goggles to block liquid splashes during solvent dilution - Organic vapor respirators for long-hour work in high-concentration vapor zones Bare-hand contact, short-sleeve uniforms and unprotected eye exposure are strictly prohibited during production shifts. 

 Standardized Storage Specifications Store 99.5% PEEA sealed inside cool, dry, fully ventilated chemical warehouses, far away from direct sunlight, heating pipelines and all ignition sources including welding equipment, open flames and static spark generators. Keep storage area temperature below 30°C to slow solvent volatilization. Tighten drum lids completely to prevent moisture absorption, which would lower product purity and cause formulation instability. Separate PEEA storage zones from strong oxidizing agents and concentrated acids to avoid dangerous chemical reactions. 

 Safe Transportation Guidelines All bulk shipments of 99.5% PEEA adopt sealed standard industrial steel drums with anti-leak rubber gaskets. Loading and unloading workers must avoid violent rolling, impact or tipping of drums to prevent cracking and liquid leakage. Transport vehicles must carry equipped fire extinguishers and static elimination devices, and cannot ship highly flammable chemicals in the same cargo compartment as PEEA. !

Choosing a Reliable 99.5% PEEA Manufacturer Stable consistent purity of PEEA directly determines coating gloss, printing yield and electronic product pass rate. Unqualified suppliers with fluctuating ester content will force frequent formula adjustments and raise defective product rates. Trustworthy PEEA chemical suppliers deliver these core competitive advantages: 1. Strict 99.5% minimum ester purity verified by gas chromatography (GC) full-component testing, fixed low moisture and acid value indicators across every production batch 2. Complete international management certifications: ISO9001 quality control system, ISO14001 environmental management and OHSAS18001 occupational health & safety certification 3. Stable global bulk supply capacity, flexible packaging options including 200kg steel drums, IBC intermediate bulk containers and bulk tank truck shipments, matching small lab trial orders and mass factory bulk procurement 4. Professional technical support team providing formula adjustment guidance, solvent blending schemes and on-site production troubleshooting for coating, ink and electronic manufacturing clients 5. Complete official MSDS, COA batch analysis certificates and cross-border customs export documentation for global industrial chemical trade As a one-stop industrial glycol ether and ester solvent supplier with 30 years of industry experience, Richnow Chem specializes in high-purity 99.5% industrial grade propylene glycol monoethyl ether acetate (CAS 54839-24-6). We supply stable consistent PEEA raw materials to coating factories, electronic photoresist manufacturers, printing ink producers and precision cleaning enterprises worldwide, with steady batch purity and customized technical service for all industrial formulation demands. 

Conclusion

99.5% industrial propylene glycol monoethyl ether acetate (CAS 54839-24-6) remains a premium low-toxicity P-series glycol ether acetate solvent favored by modern manufacturers, thanks to its balanced universal solvency, mild controllable slow evaporation, broad formulation compatibility and eco-friendly low-VOC, low-hazard profile. It delivers clear production improvements: smoother coating leveling, cleaner screen printing output, lower electronic component scrap rates and compliant occupational health operation standards. For procurement managers and formula engineers, evaluating whether PEEA matches your production lines requires aligning its evaporation speed, solvency power and global regulatory compliance with your specific coating, ink, photoresist or precision cleaning processes. Partnering with a certified, stable PEEA supplier further locks in long-term production efficiency and consistent finished product quality across all manufacturing batches. 

FAQs About 99.5% Propylene Glycol Monoethyl Ether Acetate (CAS 54839-24-6)

Q1: What are the primary industrial uses of 99.5% PEEA?

Industrial grade PEEA serves as a high-boiling co-solvent for automotive baking coatings, screen & PCB printing inks, semiconductor photoresist carriers, precision electronic flux cleaning fluid, waterborne polymer coalescing agents and fine chemical synthesis carriers. It dissolves various resins, pigments and organic processing residues while maintaining balanced slow drying performance to optimize manufacturing workflows. 

 Q2: Is 99.5% PEEA soluble in water?

Yes. PEEA features partial water solubility and fully miscible with most mainstream organic solvents including alcohols, ketones, esters and aliphatic hydrocarbons. This dual water-oil compatibility makes it an ideal coupling solvent for mixed waterborne and solvent-based industrial formulations.

 Q3: Can PEEA replace restricted E-series glycol ethers like EGME?

Absolutely. PEEA is a perfect low-toxicity alternative to ethylene glycol monomethyl ether (EGME). It delivers comparable solvency performance with no reproductive toxicity risks, fully complying with strict EU, US and global industrial chemical emission and occupational health regulations, suitable for export-grade finished product production lines banned from E-series ether solvents.

Q4: What core differences separate PEEA and PMA solvent?

PMA (propylene glycol methyl ether acetate) has a lower boiling point and faster evaporation rate, commonly used for simple photoresist thinning and light-duty cleaning. PEEA evaporates much more slowly, offering longer working time for thick-film coatings and large-format screen printing, with wider compatibility for high-molecular-weight resins, making it the better choice for high-gloss baking coatings and precision PCB ink manufacturing.