Appendix D - Dossier (PDF) - Tera

date: 20–JUL–2005
3. Environmental Fate and Pathways Substance ID: 71–43–2
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Type: volatility
Media: soil – air
Method: other
Remark: A model was developed to predict the environmental fate of
benzene following leakage of gasoline from an underground
storage tank. It was estimated that most (67%) of the
benzene in the gasoline would volatilize from the soil
within 17 months. Of the remaining benzene, 29% would be
expected to leach to groundwater and 3% would remain in the
soil.
Source: BP Chemicals Ltd LONDON
German Rapporteur
Reliability: (4) not assignable
16–MAR–2004 (55) (1165)
Type: volatility
Media: soil – air
Method: other
Remark: Based on benzene’s vapour pressure of 95.2 mmHg at 25°C
(Riddick J.A. et al. Organic Solvents: Physical Properties
and Methods of Purification. Techniques of Chemistry. 4th
Edition. Wiley–Interscience, 1986 cited in HSDB, 1993),
volatilization from soil surfaces and other surfaces is
expected to be rapid. Benzene which does not evaporate will
be highly–very highly mobile in soil and may leach to
groundwater.
Source: BP Chemicals Ltd LONDON
German Rapporteur
Reliability: (4) not assignable
16–MAR–2004 (530) (1084)
Type: volatility
Media: water – air
Method: other: calculation based on thermodynamic considerations
Result: The half–life for evaporation of benzene from a 1 m thick
still water column was 4.81 hours at 25°C and 5.03 hours at
10°C by thermodynamic calculations. The residence half–time
for well–mixed water was 37 minutes.
Source: BP Chemicals Ltd LONDON;
Deutsche Shell Chemie GmbH Eschborn
German Rapporteur
Reliability: (2) valid with restrictions
16–MAR–2004 (720) (827)
Appendix D: Benzene SIDS Dossier
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