OCTACOSANE

n-Octacosane

630-02-4

Octacosane, n-

CCRIS 680

UNII-VFF49836P8

VFF49836P8

NSC 5549

NSC-5549

EINECS 211-125-7

AI3-52615

DTXSID6058639

CHEBI:32943

HSDB 8358

CH3-[CH2]26-CH3

MFCD00009355

n-Octacosane 1000 microg/mL in Methanol

Octacosane 1000 microg/mL in Dichloromethane

NSC 5549; n-Octacosane

Octacosane, analytical standard

CH3-(CH2)26-CH3

n-Octcosane

Octacosane, 99%

DTXCID4032326

NSC5549

LMFA11000580

STL453125

AKOS015902504

HY-W272217

MCULE-9551476105

DB-054367

CS-0317451

NS00010789

O0002

D91782

Q3348776

Analytical Reagent, inverted exclamation markY97.0%(GC)

E66BE919-93E8-4101-AB46-9612FE796394

The Henry's Law constant for octacosane is estimated as 870 atm-cu m/mole(SRC) using a fragment constant estimation method(1). This Henry's Law constant indicates that octacosane is expected to volatilize from water surfaces(2). Based on this Henry's Law constant, the volatilization half-life from a model river (1 m deep, flowing 1 m/sec, wind velocity of 3 m/sec)(2) is estimated as 5.8 hours(SRC). The volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec)(2) is estimated as 7.9 days(SRC). However, volatilization from water surfaces is expected to be attenuated by adsorption to suspended solids and sediment in the water column. The volatilization half-life from a model pond is greater than 2 years when adsorption is considered(3). Octacosane's Henry's Law constant indicates that volatilization from moist soil surfaces may occur(SRC). Octacosane is not expected to volatilize from dry soil surfaces(SRC) based upon an extrapolated vapor pressure of 1.60X10-9 mm Hg at 25 deg C(4).
Literature: (1) US EPA; Estimation Program Interface (EPI) Suite. Ver. 4.1. Nov, 2012. Available from, as of Nov 22, 2016: http://www2.epa.gov/tsca-screening-tools (2) Lyman WJ et al; Handbook of Chemical Property Estimation Methods. Washington, DC: Amer Chem Soc pp. 15-1 to 15-29 (1990) (3) US EPA; EXAMS II Computer Simulation (1987) (4) Daubert TE, Danner RP; Physical and Thermodynamic Properties of Pure Chemicals Data Compilation. Washington, DC: Taylor and Francis (1989)

In water, 5.6X10-10 mg/L at 25 deg C (est)
Literature: US EPA; Estimation Program Interface (EPI) Suite. Ver. 4.1. Nov, 2012. Available from, as of Nov 10, 2016: http://www2.epa.gov/tsca-screening-tools
Literature: #Insoluble in water
Literature: Haynes, W.M. (ed.). CRC Handbook of Chemistry and Physics. 95th Edition. CRC Press LLC, Boca Raton: FL 2014-2015, p. 3-424
Literature: #Miscible with acetone, soluble in benzene, chloroform
Literature: Haynes, W.M. (ed.). CRC Handbook of Chemistry and Physics. 95th Edition. CRC Press LLC, Boca Raton: FL 2014-2015, p. 3-424

Using a structure estimation method based on molecular connectivity indices(1), the Koc of octacosane can be estimated to be 7.1X10+7(SRC). According to a classification scheme(2), this estimated Koc value suggests that octacosane is expected to be immobile in soil.
Literature: (1) US EPA; Estimation Program Interface (EPI) Suite. Ver. 4.1. Nov, 2012. Available from, as of Nov 22, 2016: http://www2.epa.gov/tsca-screening-tools (2) Swann RL et al; Res Rev 85: 17-28 (1983)