Products Description of 2-Ethylhexanoic Acid CAS#149-57-5
2-Ethylhexanoic acid, alternatively referred to as isooctanoic acid, is an organic carboxylic acid. It has a molecular formula of C8H16O2 and a molecular weight of roughly 144.22. The substance is normally a colourless, transparent oily liquid with a faint characteristic odour. Its key physical parameters are as follows: melting point −59°C, boiling point 228°C, relative density 0.906 (20°C), refractive index 1.4241 (20°C). It dissolves in hot water and ether, while exhibiting limited solubility in ethanol.
2-Ethylhexanoic acid possesses pronounced acidity. It is capable of reacting with sodium hydroxide to generate carboxylate salts. Moreover, it can undergo esterification reactions with alcohols to yield ester derivatives, triethylene glycol di(2-ethylhexanoate) being one typical example. Additionally, it may react with alkali metals and heavy metals to form metallic soaps, such as its zinc, lead, cadmium and barium salts.
2-Ethylhexanoic acid Chemical Properties
| Melting point | -59 °C |
| Boiling point | 228 °C(lit.) |
| density | 0.906 |
| vapor density | 4.98 (vs air) |
| vapor pressure | <0.01 mm Hg ( 20 °C) |
| refractive index | n20/D 1.425(lit.) |
| Fp | 230 °F |
| storage temp. | Store below +30°C. |
| solubility | 1.4g/l |
| form | Liquid |
| pka | pK1:4.895 (25°C) |
| color | Clear |
| PH | 3 (1.4g/l, H2O, 20℃) |
| Odor | Mild odour |
| PH Range | 3 at 1.4 g/l at 20 °C |
| explosive limit | 1.04%, 135°F |
| Water Solubility | 2 g/L (20 ºC) |
| BRN | 1750468 |
| Exposure limits | ACGIH: TWA 5 mg/m3 |
| Stability: | Stable. Combustible. Incompatible with strong oxidizing agents, reducing agents, bases. |
| InChIKey | OBETXYAYXDNJHR-UHFFFAOYSA-N |
| LogP | 2.7 at 25℃ |
| CAS DataBase Reference | 149-57-5(CAS DataBase Reference) |
| NIST Chemistry Reference | Hexanoic acid, 2-ethyl-(149-57-5) |
| EPA Substance Registry System | 2-Ethylhexanoic acid (149-57-5) |
Safety Information
| Hazard Codes | Xn |
| Risk Statements | 63-41-37/38-20/21/22 |
| Safety Statements | 36/37-36/37/39-26-2 |
| RIDADR | UN 3265 8/PG 2 |
| WGK Germany | 1 |
| RTECS | MO7700000 |
| F | 13 |
| Autoignition Temperature | 699 °F |
| TSCA | Yes |
| HazardClass | 8 |
| PackingGroup | III |
| HS Code | 29159080 |
| Hazardous Substances Data | 149-57-5(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: 3640 mg/kg LD50 dermal Rabbit > 2000 mg/kg |
Product Application of 2-Ethylhexanoic Acid CAS#149-57-5
The majority of 2-ethylhexanoic acid is processed to manufacture metal salts including zirconium, cobalt, molybdenum and zinc salts. These derivatives are extensively adopted as paint driers and thermal stabilizers for polyvinyl chloride (PVC). Its tin salts are frequently utilized as additives during the manufacturing of plastic pipes, whereas barium and cadmium salts act as stabilizers for plastic calendered goods.
Furthermore, 2-ethylhexanoic acid and its ester derivatives find applications in pharmaceuticals, fungicidal agents, metalworking lubricants and cosmetic formulations. Its glyceride functions as a high-performance plasticizer. This chemical also acts as a critical starting material for synthesizing the pharmaceutical agent carbenicillin, and participates in the production of multiple dyestuffs and aromatic fragrances.
