Products Description of 2-Ethylhexanoic Acid CAS#149-57-5
2-Ethylhexanoic acid, also known as isooctanoic acid, is a carboxylic acid organic compound with the molecular formula C8H16O2 and an approximate molecular weight of 144.22. It typically appears as a colorless, transparent, oily liquid with a mild odor. Its physical properties include a melting point of -83°C, a boiling point of 227.6°C, a relative density of 0.9105 (20°C), a refractive index of 1.4241 (20°C), a flash point of 127°C, an autoignition temperature of 377°C, and a viscosity of 7.73 mPa·s (20°C). It is soluble in hot water and ether, and slightly soluble in ethanol.
2-Ethylhexanoic acid shows strong acidity and can react with sodium hydroxide to form carboxylate salts. It can also undergo esterification with alcohols under strong oxidizing conditions to produce esters such as triethylene glycol di(2-ethylhexanoate). In addition, it can react with alkali metals and heavy metals to form metal soaps, including 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
Most of 2-ethylhexanoic acid is converted into metal salts such as zirconium, cobalt, molybdenum, and zinc, which are widely used as paint driers and heat stabilizers in polyvinyl chloride (PVC) plastics. Tin salts are commonly applied as additives in plastic pipe production, while barium and cadmium salts are used in plastic calendering products and as stabilizers.
In addition, 2-ethylhexanoic acid and its esters are applied in pharmaceuticals, fungicides, metal lubricants, and cosmetics. Its glyceride serves as an excellent plasticizer. The compound is also an important raw material for the pharmaceutical product carbenicillin and is used in the synthesis of various dyes and fragrance
Company Profile
Furuida (Jinan) Chemical Technology Co., Ltd., headquartered in Shandong, China, is a modern fine chemical enterprise integrating R&D, production, sales, and global services. With a deep commitment to the new chemical materials sector, the company is guided by the principles of integrity, quality, and customer centricity. Propelled by innovation and rigorous quality management, it is steadily strengthening its global presence, operational sophistication, and brand equity.
The company is backed by an experienced foreign trade and technical support team, a mature global supply infrastructure, and robust logistics capabilities. With annual revenue surpassing RMB 600 million, it serves over 5,000 industrial customers across the globe. Its business reach extends to numerous countries in Asia, Europe, Africa, and Oceania, securing a loyal worldwide clientele and a strong market reputation.
Furuida’s core portfolio encompasses pharmaceutical intermediates, food additives, electroplating chemicals, water treatment agents, dye auxiliaries, functional new materials, titanium compounds, metal salts, catalysts, and surfactants. Widely deployed across pharmaceuticals, electronics, coatings, rubber and plastics, fine chemicals, and water treatment, these solutions are backed by the company's steadfast commitment to stable supply, cost performance, and integrated service support.
