Product Description of Octanoic Acid CAS#124-07-2 Octanoic acid, alternatively named caprylic acid or n‑caprylic acid, falls into the category of medium‑chain fatty acids (MCFAs). Its molecular backbone consists of eight carbon atoms.
This compound is recognized as an essential fatty acid critical for maintaining healthy human physiology. Sufficient supply of this nutrient sustains regular bodily metabolic activities, and insufficient intake may trigger impairments in memory and focus.
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#124‑07‑2 Octanoic acid can be incorporated into custom‑tailored industrial and agrochemical preparation systems.
For miticide formulations targeting wheat spider pests, n‑octanoic acid acts as a synergistic additive paired with trimethylolpropane ester. Their combined dosage accounts for 7‑9 parts by weight. The optimum performance for pest suppression is achieved at a weight ratio between trimethylolpropane ester and n‑octanoic acid of 6‑8:1. This blend can be further processed into finished pesticide products for wheat spider management.
Within anticorrosion and antirust fluid systems, n‑octanoic acid works synergistically together with boric acid; their total loading is kept at 7‑9 parts. The recommended weight proportion of boric acid versus n‑octanoic acid falls within 6‑8:1. Formulations prepared with this ratio deliver outstanding anti‑rust and corrosion‑inhibiting capability, with peak performance maintained inside this specified proportion range.
