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Ethyl-3-ethoxypropionate
Ethyl 3-ethoxypropionate (EEP; CAS 763-69-9; EC 212-112-9) is a slow-evaporating ether-ester solvent (C₇H₁₄O₃, molecular weight 146.18 g/mol, boiling point ≈166 °C, flash point ≈52 °C) supplied by Royalchem Spain at ≥99.5% purity. Prized for its excellent polymer solvency, good flow and levelling, resistance to solvent popping in baking, moderate odour, low surface tension and high electrical resistance, it is a non-glycol-ether, non-HAP solvent widely used as a tail solvent in automotive, industrial, marine and aerospace coatings, in printing inks, and as a photoresist solvent in electronics manufacturing.
Product Description
Ethyl 3-Ethoxypropionate (EEP)
Slow-Evaporating Ether-Ester Coating Solvent — High Polymer Solvency for Coatings, Inks & Electronic / Photoresist Applications
CAS: 763-69-9 EC: 212-112-9 Assay: ≥ 99.5%
Ethyl 3-ethoxypropionate (EEP, CAS 763-69-9) is a slow-evaporating ether-ester solvent valued in high-performance coatings and inks for its excellent polymer solvency, good flow and levelling, resistance to solvent popping in baking, moderate odour, low surface tension, and high electrical resistance. A non-glycol-ether, non-HAP solvent, it is widely used as a tail solvent in automotive, industrial, marine, and aerospace coatings and as a photoresist solvent in electronics. Royalchem Spain supplies it at ≥ 99.5% purity as a clear, colourless liquid, delivered from our Valladolid distribution hub by drum, IBC, or ISO tank.
Technical Specifications (COA Data)
| Assay (GC) | ≥ 99.5% |
| Appearance | Clear, colourless liquid |
| Moisture (KF) | ≤ 0.05% |
| Ethanol Content | ≤ 0.1% |
| Colour (Pt–Co) | ≤ 10 |
| Acidity (as acid) | ≤ 0.02% |
| Density (25 °C) | ≈ 0.95 g/mL |
*Regulatory: EINECS-listed (EC 212-112-9); supplied in line with EU REACH requirements; manufactured under ISO 9001. GHS — Warning: flammable liquid and vapour (H226, flash point ≈ 52 °C); may cause mild skin or eye irritation. Shipped as a Class 3 flammable liquid (UN 1993, PG III) — keep away from heat, sparks, and ignition sources, with proper bonding and grounding. EEP is a non-HAP solvent but is counted as 100% VOC by some regulators (e.g. US SCAQMD) — verify VOC status for your market. Always refer to the current SDS.
Chemical Structure
Key Properties
• Molecular Formula: C₇H₁₄O₃
• Molecular Weight: 146.18
• Boiling Point: ≈ 166 °C
• Flash Point: ≈ 52 °C (closed cup)
• Molecular Weight: 146.18
• Boiling Point: ≈ 166 °C
• Flash Point: ≈ 52 °C (closed cup)
Main Applications
High-Performance Coatings
A slow-evaporating tail solvent for automotive refinish and OEM, industrial, coil, marine, and aerospace coatings, improving flow and levelling, gloss, and film uniformity and reducing solvent popping in baked finishes.
Printing Inks & Electronics
A high-solvency carrier for printing inks and a photoresist solvent and edge-bead remover in semiconductor and electronics manufacturing, where its clean evaporation supports precise, residue-free processing.
Coupling / Tail Solvent & Specialty
A coupling and retarder solvent for acrylic, polyester, epoxy, and polyurethane resin systems, a clean-up and process solvent, and a building block in organic synthesis — a versatile alternative to glycol ethers and NMP.
Logistics & Packaging
Standard Packaging:
200 kg steel drums, IBC totes (approx. 1000 kg), or ISO tank for bulk — or to customer requirement. Distributed by Royalchem Spain from our Valladolid hub. Shelf life 24 months in original sealed packaging.
Storage Conditions:
Store in tightly closed containers in a cool, well-ventilated area away from heat, sparks, ignition sources, and strong oxidising agents. A combustible liquid (flash point ≈ 52 °C) — keep containers bonded and grounded during transfer and protect from moisture to preserve quality.