2-Ethylhexanoic acid
CAS Number: 149-57-5
Chemical Formula: C8H16O2
Synonyms: 2-EHA 2-Ethylcaproic acid Isooctanoic acid
Appearance: Clear Liquid
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Products Description
2-Ethylhexanoic acid is a branched-chain saturated carboxylic acid characterized by its low volatility and strong solubility in organic solvents. It is widely produced via the oxo synthesis process from propylene, with its molecular structure featuring a branched alkyl chain that imparts unique chemical and physical properties. As an important organic intermediate, it serves as a foundational raw material for manufacturing diverse metal salts, esters, and plasticizers, playing a critical role in multiple industrial sectors.
Chemical Properties
| Item | Value |
| Melting point | -83 °C |
| Boiling point | 228 °C lit. |
| Density | 0.885-0.890 g/mL at 25 °C lit. |
| Vapor pressure | ~0.1 mm Hg at 25 °C |
| Refractive index | n20/D 1.426 lit. |
| Flash point | 126 °C |
| Storage temp. | 2-8°C |
| Solubility | Miscible with ethanol, ether, chloroform; slightly soluble in water |
| Form | Liquid |
| Color | Colorless to pale yellow |
| Odor | Mild fatty odor |
| pKa | 4.85 ± 0.05 |
| LogP | 2.78 |
| CAS DataBase Reference | 149-57-5 CAS DataBase Reference |
| NIST Chemistry Reference | 2-Ethylhexanoic acid 149-57-5 |
| EPA Substance Registry System | 2-Ethylhexanoic acid 149-57-5 |
Product Application
2-Ethylhexanoic acid is extensively used to produce metal salts such as cobalt, zirconium, calcium, and zinc salts. These metal salts act as efficient catalysts in polyester synthesis, paint drying, and rubber curing processes. Additionally, its esters serve as high-performance plasticizers for polyvinyl chloride (PVC), significantly enhancing the flexibility and processability of PVC products.
In cosmetic formulations, 2-ethylhexanoic acid functions as a pH adjuster and solubilizer, improving the stability of skincare products. It is also used in the synthesis of emollient esters that provide skin conditioning effects, making it a valuable ingredient in lotions, creams, and hair care products.
Supply & Delivery
Fast delivery time
Inventory: 2-3 working days
New production: 7-10 working days
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