HEXACOSANE

n-Hexacosane

630-01-3

0CI4OKE9VO

Pentacosane, methyl-

CH3-[CH2]24-CH3

MFCD00009354

NSC-122457

Hexacosane, analytical standard

Hexacosane; NSC 122457; n-Hexacosane

EINECS 211-124-1

Hexacosane, 99%

NSC 122457

n-Hexacosane 100 microg/mL in Hexane

HEXACOSANE, N-

UNII-0CI4OKE9VO

DTXSID7060883

CHEBI:32940

HSDB 8356

LMFA11000576

NSC122457

AKOS015902503

AS-56386

DB-054366

CS-0197342

H0050

NS00010788

D90786

Q151016

Trans-4-hydroxyl-lprolinemethyl esterhydrochloride

CC0EF1C1-42C8-4428-AB5A-41E9C6A177E7

The Henry's Law constant for hexacosane is estimated as 490 atm-cu m/mole(SRC) using a fragment constant estimation method(1). This Henry's Law constant indicates that hexacosane 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 5.5 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 7.6 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). Hexacosane's Henry's Law constant indicates that volatilization from moist soil surfaces may occur(SRC). Hexacosane is not expected to volatilize from dry soil surfaces(SRC) based upon an extrapolated vapor pressure of 4.69X10-7 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 10, 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) Perry RH, Green D; Perry's Chemical Handbook. Physical and Chemical data. 6th ed., New York, NY: McGraw-Hill (1984)

In water, 6.2X10-09 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: #Very soluble in benzene, ligroin, chloroform
Literature: Haynes, W.M. (ed.). CRC Handbook of Chemistry and Physics. 95th Edition. CRC Press LLC, Boca Raton: FL 2014-2015, p. 3-292

Using a structure estimation method based on molecular connectivity indices(1), the Koc of hexacosane can be estimated to be 2.1X10+7 (SRC). According to a classification scheme(2), this estimated Koc value suggests that hexacosane 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 10, 2016: http://www2.epa.gov/tsca-screening-tools (2) Swann RL et al; Res Rev 85: 17-28 (1983)