Synonym1-Heptanecarboxylic acid, 1-heptanecarboxylicacid, 1-octanoic acid, acidecaprylique, acideoctanoique, Caprylsaure, Emery 657, Emery657, Octanoic acid, 1-Heptanecarboxylic acid, 4-02-00-00982 (Beilstein Handbook Reference), Acide octanoique, Acide octanoique [French], Acido octanoico, Acido octanoico [Spanish], Acidum octanocium, Acidum octanocium [Latin], AI3-04162, BRN 1747180, C-8 acid, Caprylic acid, Caprylic acid (natural), Caprylsaeure, CCRIS 4689, EC 204-677-5, EINECS 204-677-5, Enantic acid, FEMA No. 2799, Hexacid 898, HSDB 821, Kyselina kaprylova, Kyselina kaprylova [Czech], n-Caprylic acid, n-Octanoic acid, n-Octoic acid, n-Octylic acid, neo-Fat 8, NSC 5024, Octanoic acid, Octic acid, Octoic acid, Octylic acid, UNII-OBL58JN025, Systematic Name Octanoic acid, Superlist Names Caprylic acid, Octanoic acid, Caprylic acid, C8 acid, n-Caprylic acid, 1-Heptanecarboxylic acid, Octanoic acid, n-Octanoic acid Octic acid, Octoic acid, n-Octoic acid, n-Octylic acid
Molecular weight144.21
EINECS204-677-5
SMILESC(CCCCC)CC(O)=O
Solubility0.68g/l
Melting Point16 °C
Vapor Density5
Flash Point>230 °F
ColorClear colorless to yellow
Refractive Index1.428
BRN Number1747180
Vapor Pressure1 mm Hg ( 78 °C)
Merck14,1765
StabilityStable. Incompatible with bases, reducing agents, oxidizing agents. Flammable.
FormLiquid
Density0.91 g/mL at 25 °C
Water solubility0.68 g/L (20 ยบC)
Storage TemperatureStore below +30°C.
FEMA2799 | OCTANOIC ACID
Boiling Point237 °C
pKa Dissociation Constant4.89
log P (octanol-water)3.05
Henry's Law Constant8.92E-07 atm-m3/mole
Water solubility789 mg/L
Vapor Pressure0.00371 mm Hg
Melting Point16.3 ° C
Boiling Point239 ° C
Atmospheric OH Rate Constant8.35E-12 cm3/molecule-sec