www.ymparisto.fi
 
 
Data bank of environmental chemicals     |     The Finnish Environment Institute (SYKE)
 


29.3.2024

Data bank of environmental properties of chemicals


Chemical
Caprylic acid
CAS-number :
124-07-2
 
Synonyms :
n-octoic acid
n-octylic acid.
Octanoic acid
 
Sumformula of the chemical :
CH3(CH2)6COOH C8H16O2
EINECS-number :
2046775
 
State and appearance :
Colourless liquid or solid.
 
Odor :
Characteristic, unpleasant, irritating.

In water: Threshold Odour Concentration: detection: 3.0 mg/kg
(Cherkinski 1961).
 
Molecular weight :
144.21
 
Spesicif gravity (water=1) :
0.91  at 20/4 °C
 
Vapor density (air=1) :
 
Conversion factor, 1 ppm in air=_mg/m3 :
5.994  mg/m3
 
Conversion factor, 1 mg/m3 in air=_ppm :
0.167  ppm
 
Vapor pressure, mmHg :
at 92 °C
 
Water solubility, mg/l :
2500  at 100 °C
 
Melting point, °C :
16 
 
Boiling point, °C :
237 
 
pKa :
4.89  Sangster 1989
 
Log octanol/water coefficient, log Pow :
3.05  Sangster 1989
 
Effects on physiology of mammals :
Dog: oral doses: 1 - 5 % in diet causes diarrhea (Patty 1967).
 
Other information of water organisms :
Lepomis macrochirus: chemical is too insoluble in water to be
toxic (Dowden 1960).

References
1894Cherkinski, W. 1961. Protection of natural waterbasins against pollution with industrial wastewater. Literature on water supply and pollution control, Book No. 5, U.S. Department of Commerce, Office of Technical Service, Washington, D.C., TT-61-31601-5.
354Dowden, B.F. 1960. Cumulative toxicities of certain inorganic salts to Daphnia magna as determined by median tolerance limits. Proc. La. Acad. SCi. 23:77.
1644Patty, F.A. 1967. Industrial hygiene and toxicology. Vol 2. Interscience Publishers.
3104Sangster, J. 1989. Octanol-water partition coefficients of simple organic compounds. J. Phys. Chem. Ref. Data, Vol 18, No. 3: 1111 - 1229.
1468Verschueren, K. 1983. Handbook of environmental data of organic chemicals. Van Nostrand Reinhold Co. Inc., New York. 1310 s.

 
 
© Copyright Environmental Administration