Product Description of 2-Ethoxybenzoic Acid (CAS#134-11-2)
2-Ethoxybenzoic acid is a colorless to pale yellow, low-melting organic acid with a molecular weight of 166.18 (C₉H₁₀O₃). Owing to its melting point of 19.3–19.5 °C, it typically appears as a clear oily liquid at ambient temperature but may solidify into a crystalline solid upon cooling. This compound dissolves readily in hot water, ethanol and most organic solvents, while showing only slight solubility in cold water.
As a weak aromatic carboxylic acid , it exhibits typical carboxyl-group reactivity and serves as a versatile intermediate for organic synthesis. The product should be kept sealed in a dry, cool and dark place to maintain its purity and stability during storage and transport.
2-Ethoxybenzoic Acid Chemical Properties
| Melting point | 19.3-19.5 °C (lit.) |
| Boiling point | 174-176 °C/15 mmHg (lit.) |
| density | 1.105 g/mL at 25 °C (lit.) |
| vapor pressure | 0.281Pa at 25℃ |
| refractive index | n20/D 1.54(lit.) |
| Fp | >230 °F |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | 95% ethanol: soluble5%, clear, colorless to yellow |
| form | Liquid |
| pka | pK1:4.21 (20°C) |
| color | White or Colorless to Light yellow to Light orange |
| Specific Gravity | 1.105 |
| Water Solubility | Soluble in water. |
| BRN | 2691039 |
| LogP | 1.295 at 25℃ |
| CAS DataBase Reference | 134-11-2(CAS DataBase Reference) |
| NIST Chemistry Reference | Benzoic acid, 2-ethoxy-(134-11-2) |
| EPA Substance Registry System | Benzoic acid, 2-ethoxy- (134-11-2) |
| Hazard Codes | Xi,T |
| Risk Statements | 36/37/38-26-22 |
| Safety Statements | 23-24/25-45-36/37-28-26 |
| WGK Germany | 3 |
| TSCA | Yes |
| HazardClass | IRRITANT |
| HS Code | 29189900 |
Product Application of 2-Ethoxybenzoic Acid (CAS#134-11-2)
2-Ethoxybenzoic acid acts as a valuable fine-chemical intermediate for the preparation of medicine, daily-use fragrances and agricultural chemicals. It can undergo diverse organic modification reactions to synthesize multiple substituted-benzene derivatives.
Besides pharmaceutical intermediate processing, this raw material is adopted for laboratory organic synthesis research. It also works as an additive for flavour-related formulations and helps improve the stability of some cosmetic active substances. Many dye intermediate manufacturing workflows choose it as one basic building-block to adjust finished-product colour-rendering performance.
