Physicochemical properties of dimethyl selenide and dimethyl diselenide
- National Environmental Research Inst., Roskilde, DE (United States). Dept. of Marine Ecology and Microbiology
- Univ. of California, Riverside, CA (United States). Dept. of Soil and Environmental Sciences
Volatilization of selenium (Se) is a dissipation mechanism by which gaseous Se is redistributed in the environment. The vapor pressures of dimethyl selenide (DMSe) and dimethyl diselenide (DMDSe) were determined using the isoteniscope method, and the solubility of DMSe in H[sub 2]O was determined in a closed system by headspace analysis. The vapor pressure at 25 C were 32.03 and 0.38 kPa for DMSe and DMDSe, respectively. The enthalpies of vaporization were calculated as 31.90 and 74.92 kJ mol[sup [minus]1], respectively. The solubility of DMSe was 0.0244 g/g of H[sub 2]O. The Henry's law constant for DMSe was calculated as 143 kPa kg mol[sup [minus]1] (0.144 kPa m[sup 3] mol[sup [minus]1]).
- OSTI ID:
- 7049337
- Journal Information:
- Journal of Chemical and Engineering Data; (United States), Journal Name: Journal of Chemical and Engineering Data; (United States) Vol. 39:3; ISSN JCEAAX; ISSN 0021-9568
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
54 ENVIRONMENTAL SCIENCES
540210 -- Environment
Terrestrial-- Basic Studies-- (1990-)
540310 -- Environment
Aquatic-- Basic Studies-- (1990-)
DATA
DEGASSING
ENTHALPY
ENVIRONMENTAL TRANSPORT
EXPERIMENTAL DATA
INFORMATION
MASS TRANSFER
MEASURING METHODS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
PHYSICAL PROPERTIES
SELENIUM COMPOUNDS
SOILS
SOLUBILITY
SURFACE WATERS
THERMODYNAMIC PROPERTIES
TRANSITION HEAT
VAPOR PRESSURE
VAPORIZATION HEAT