Product Details
Product Description of Octanoic Acid (CAS No.: 124-07-2)
Octanoic acid, alternatively called caprylic acid or n-caprylic acid, is a medium-chain fatty acid (MCFA) with an 8-carbon molecular chain.
Caprylic acid is recognized as an essential fatty acid, which is critical for the normal operation of the human body. Sufficient levels of this fatty acid are required to support regular physiological processes, while a lack of it may lead to problems related to memory and concentration.
Octanoic acid Chemical Properties
| Melting point | 16 °C |
| Boiling point | 237 °C(lit.) |
| Density | 0.91 g/mL at 25 °C(lit.) |
| Vapor density | 5 (vs air) |
| Vapor pressure | 1 mm Hg ( 78 °C) |
| Refractive index | n20/D 1.428(lit.) |
| FEMA | 2799 | OCTANOIC ACID |
| Fp | >230 °F |
| Storage temp | 20-25°C |
| Solubility | 0.68g/l |
| Pka | 4.89(at 25℃) |
| Form | Liquid |
| Specific Gravity | 0.910 (20/4℃) |
| Color | Clear colorless to yellow |
| PH | 3.97(1 mM solution);3.45(10 mM solution);2.95(100 mM solution); |
| Odor | unpleasant odor |
| PH Range | 3.5 |
| Odor Type | fatty |
| Explosive limit | 1%(V) |
| Water Solubility | 0.68 g/L (20 ºC) |
| Merck | 141765 |
| JECFA Number | 99 |
| BRN | 1747180 |
| Dielectric constant | 3.2 |
| Dielectric constant | 3.2（18℃） |
| Stability | Stable. Incompatible with bases, reducing agents, oxidizing agents. Flammable. |
| LogP | 3.05 at 20℃ |
| CAS DataBase Reference | 124-07-2(CAS DataBase Reference) |
| NIST Chemistry Reference | Octanoic acid(124-07-2) |
| EPA Substance Registry System | Octanoic acid (124-07-2) |
Safety Information
| Hazard Codes | C,Xi |
| Risk Statements | 34 |
| Safety Statements | 26-36/39-45-36/37/39-25-27 |
| RIDADR | UN 3265 8/PG 3 |
| WGK Germany | 1 |
| RTECS | RH0175000 |
| Autoignition Temperature | >300 °C |
| Hazard Note | Irritant |
| TSCA | Yes |
| HS Code | 2915 90 70 |
| HazardClass | 8 |
| PackingGroup | III |
| Hazardous Substances Data | 124-07-2(Hazardous Substances Data) |
| Toxicity | LD50 orally in rats: 10,080 mg/kg (Jenner) |
Product Application of Octanoic Acid (CAS No.: 124-07-2)
Octanoic acid can be incorporated into specialized industrial and agricultural formulations, serving multiple practical purposes.
In formulations for preventing and controlling wheat spiders, n-octanoic acid is used as a synergistic component alongside trimethylolpropane ester, with a total addition amount of 7–9 parts. The optimal weight ratio of trimethylolpropane ester to n-octanoic acid is 6–8:1, which ensures the best performance in preventing and controlling wheat spiders. This composite formula can be further developed into pesticide products specifically for wheat spider control.
In anti-corrosion and rust-preventive liquids, n-octanoic acid is combined with boric acid as a synergistic ingredient, with a total dosage ranging from 7 to 9 parts. The recommended weight ratio of boric acid to n-octanoic acid is 6–8:1; under this ratio, the formulation exhibits excellent rust-preventive and anti-corrosion properties. Maintaining the ratio within the specified range ensures the optimal performance of the formulation.
