Henicosane

HENEICOSANE

henicosan

FNAZRRHPUDJQCJ-UHFFFAOYSA-N

n-Heneicosane

Heneicosane, analytical standard

Henicosane #

AC1L1ZIU

Eicosane, methyl-

I93S5U5DMP

ACMC-1B9XJ

Heneicosane, 98%

C21H44

UNII-I93S5U5DMP

CTK2F5971

X6939

S0293

UNII-J3N6X3YK96 component FNAZRRHPUDJQCJ-UHFFFAOYSA-N

HSDB 8351

LP001810

DTXSID9047097

SBB061284

CHEBI:32931

TL8004350

AN-22070

ANW-34496

TRA0005571

CC-32772

ZINC62233929

MFCD00009346

LMFA11000572

C-24776

RTR-021687

AI3-36479

ST51047315

TR-021687

DB-054362

AKOS015902468

UNII-33822S0M40 component FNAZRRHPUDJQCJ-UHFFFAOYSA-N

FT-0632670

I14-19386

629-94-7

MCULE-3230962872

EINECS 211-118-9

CH3-[CH2]19-CH3

FD8EC3D3-E6A2-47B6-9E26-13A115192857

The Henry's Law constant for heneicosane is estimated as 120 atm-cu m/mole(SRC), based upon its vapor pressure, 8.73X10-8 mm Hg(1), and water solubility, 2.9X10-8 mg/L(2). This Henry's Law constant indicates that heneicosane may volatilize from water surfaces(3). 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)(3) is estimated as 1.8 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)(3) is estimated as 6.8 days(SRC). However, adsorption to soil is expected to attenuate volatilization(SRC). The estimated volatilization half-life from a model pond is greater than 2 years if adsorption is considered(4). Heneicosane is not expected to volatilize from dry soil surfaces(SRC) based upon its vapor pressure.
Literature: (1) Perry RH, Green D; Perry's Chemical Handbook. Physical and Chemical Data. 6th ed., New York, NY: McGraw Hill (1984) (2) Coates M et al; Env Sci Tech 19: 628-32 (1985) (1985) (3) Lyman WJ et al; Handbook of Chemical Property Estimation Methods. Washington, DC: Amer Chem Soc pp. 15-1 to 15-29 (1990) (4) US EPA; EXAMS II Computer Simulation (1987)

In water, 2.9X10-8 mg/L at 25 deg C (extrapolated)
Literature: Coates M et al; Environ Sci Technol 19: 628-32 (1985)
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. 3-288
Literature: #Slightly soluble in ethanol; soluble in petroleum ether
Literature: Haynes, W.M. (ed.). CRC Handbook of Chemistry and Physics. 95th Edition. CRC Press LLC, Boca Raton: FL 2014-2015, p. 3-288

The Koc of heneicosane is estimated as 1.1X10+6(SRC), using an estimated log Kow of 10.65(1) and a regression-derived equation(2). According to a classification scheme(3), this estimated Koc value suggests that heneicosane 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 15, 2016: http://www2.epa.gov/tsca-screening-tools (2) Swann RL et al; Res Rev 85: 17-28 (1983)