Ethyl-3-ethoxypropionate / EEP

Product Description

Product Name	Ethyl 3-Ethoxypropionate (EEP) – Slow Evaporating Coating Solvent High Performance Ether Ester Solvent \| CAS 763-69-9
CAS NO.	763-69-9
Synonyms	EEP Solvent, 3-Ethoxypropionic Acid Ethyl Ester, Ethyl β-Ethoxypropionate, Ektapro EEP
Formula & Weight	C₇H₁₄O₃ (MW: 146.18 g/mol)
Chemical Structure
Technical Specifications	Appearance: Clear, colorless liquid with mild ester odor Purity (GC): ≥ 99.5% (Electronic/Coating Grade) Water Content: ≤ 0.05% Acid Value: ≤ 0.02 mgKOH/g Color (Pt-Co): ≤ 10 Boiling Point: 170°C (Slow Evaporation Rate) Flash Point: 58°C (Closed Cup) Density: 0.95 g/cm³ at 20°C Evaporation Rate: 0.02 (n-BuAc = 1)
Resin Compatibility	Acrylics PolyurethanesEpoxies Alkyds Polyesters Nitrocellulose Melamine-Formaldehyde
Regulatory Status	REACH Registered Low VOC
Packaging	200kg Steel Drum \| 1000kg IBC Tote \| ISO Tank (20MT)

Key Performance Benefits of EEP Solvent

EEP (Ethyl 3-Ethoxypropionate) is a slow-evaporating ether-ester solvent with excellent solvency for a wide range of coating polymers. Its unique linear molecular structure and central propionyl group deliver performance advantages not found in conventional solvents.

Automotive & Industrial Coatings

Electrostatic Spraying: High electrical resistance (>10⁸ Ω·cm) enables precise resistivity adjustment, improving transfer efficiency by 15-20%.

Defect Prevention: Slow evaporation eliminates pinholes, solvent popping, and orange peel effects during baking cycles.

Silver Powder Stabilization: Proprietary anti-coarsening properties prevent blackening and yellowing in metallic paints.

Electronics & Semiconductor

Photoresist Solvent: Ultra-low metal ion content and high purity (≥99.5%) meet IC/LCD manufacturing standards.

Precision Cleaning: Low surface tension ensures residue-free cleaning for PCBs, LCDs, and semiconductor components.

Edge Bead Removal: Excellent performance in photolithography edge bead removal processes.

️ Printing Inks

Screen Printing: Extended open time prevents mesh clogging during long print runs.

Gravure & Flexo: Improves ink transfer and film uniformity on various substrates.

High-End Graphics: Ensures consistent color density and gloss in premium applications.

Specialty Applications

Marine Coatings: Compatible with high-performance anti-corrosion systems.

Coil Coatings: Withstands high-temperature baking cycles for pre-coated metals.

Adhesives & Sealants: Enhances flow and wetting properties in formulations.

Frequently Asked Questions About EEP Solvent

Q: What is EEP solvent used for?

EEP (Ethyl 3-Ethoxypropionate, CAS 763-69-9) is a slow-evaporating ether ester solvent primarily used in automotive OEM/refinish coatings, industrial paints, screen printing inks, photoresist formulations, and electronics cleaning applications where superior flow, leveling, and defect-free finishes are required.

Q: Is EEP a low VOC solvent?

Yes, EEP is classified as Non-HAP (Hazardous Air Pollutant) under EPA regulations and is exempt from certain VOC restrictions in many regions. This makes it an environmentally preferred alternative to traditional solvents like xylene in coating formulations.

Q: What resins are compatible with EEP?

EEP demonstrates excellent compatibility with a wide range of resin systems including acrylics, alkyds, polyurethanes, epoxies, polyesters, nitrocellulose, and melamine-formaldehyde resins. It provides low solution viscosity compared to solvents with similar evaporation rates.

Q: How does Royalchem EEP compare to Eastman™ EEP?

Royalchem's EEP meets or exceeds the same technical specifications as Eastman™ EEP Solvent, offering identical performance characteristics at competitive pricing. Our product is trusted by leading coating manufacturers including BASF, Covestro, and Evonik.

Q: What is the recommended storage for EEP?

Store EEP in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources and open flames. Keep away from oxidizers. Shelf life is typically 24 months when stored properly below 30°C.

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