Properties of Selected Chemicals of Environmental Significance - Elements of Environmental Engineering: Thermodynamics and Kinetics - page 428

Vapor Aqueous

Log( K AW /

Molecular Pressure Solution Log

( P i ( C i /mol/dm 3 ) adm 3 /mol)

Compound Weight /kPa) ( K ow / [−] )

1.2 × 10 2

Acetaldehyde 44 4 0.83 0.52

1.3 × 10 − 1 3.1 × 10 − 2

Benzaldehyde 106 0.61 1.48

Acetophenone − 5.53

(viii) Siloxanes j
Octamethyl-
cyclotetrasiloxane

3.0 × 10 − 2 1.8 × 10 − 7

297 4.39 5.09

(ix) Alkenes and haloalkenes b , h
1-Butene

3.6 × 10 2 4.0 × 10 − 3

56 4.40 2.40

6.3 × 10 − 1 2.4 × 10 − 3 Styrene 104 2.42 3.05

3.9 × 10 2 1.7 × 10 − 1

Vinyl chloride 62 3.35 0.60

2.5 × 10 0 9.1 × 10 − 4

Tetrachloroethene 166 3.44 2.88

(x) Amines
Aniline

1.3 × 10 − 1 3.9 × 10 − 1

93 − 0.47 0.90

1.3 × 10 2 1.1 × 10 2 Ethylamine 45 5.03 − 0.30

(xi) Perfluoroalkanoic acids k , l
Perfluorooctane-
sulfonic acid
(PFOS)

10 − 7 10 − 3

500 3.3 × 1.4 × − 3.48 4.13

1.3 × 10 1 8.9 × 10 − 3 Perfluorooctanoicacid

(PFOA)

383 0.39 4.40

(xii) Polybrominated diphenyl ethers (PBDE) m
PeBDE-tetra

4.7 × 10 − 8 2.7 × 10 − 8

485 1.04 6.57

PeBDE-penta 564

6.6 × 10 − 9 7.7 × 10 − 10

OBDE-hexa 643 1.02 6.29

OBDE-hepta 722

OBDE-octa 801

4.6 × 10 − 9 < 1 × 10 − 10

DBDE-deca 959 > 1.6 6.27

(xiii) Alkynitriles n
Acetonitrile 41 13.4 0.04 0.79 ± 0.04 − 0.34

Propionitrile 55 5.2 1.08 1.17 ± 0.05 0.16

Butyronitrile 69 2.7 0.48 1.48 ± 0.05 0.53

Valeronitrile 83 1.5 0.28 1.65 ± 0.07 1.12

Isovaleronitrile 83 2.55 ± 0.09 1.07

a To obtain values in conventional units use the following conversion factors: Pressure in kPa
should be multiplied by (1/101.325) to convert to atm. Aqueous solubility expressed in mol/dm 3
is identical to mol/L. Henry's constant K aw given in units of kPa dm 3 /mol should be multiplied
by 4.04 × 10 − 4 to obtain K aw , which is a dimensionless molar ratio. All values are at 298 K
unless otherwise indicated. Log K ow values are mostly from Hansch et al. (1995).
b LeoandHansch(1971),LissandSlater(1974),MackayandLeinonen(1975),Thibodeaux(1979),
Stumm and Morgan (1981), Zhu and Mopper (1990), Morel and Herring (1993), Montgomery
(1996), and Ji and Evans (2007).
c For gases the partial pressures are typical of the atmosphere. Aqueous solubility is that at a total
pressure of 101.325 kPa and at 298 K.

continued