Appendix D - Dossier (PDF) - Tera

date: 20–JUL–2005
3. Environmental Fate and Pathways Substance ID: 71–43–2
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Type: anaerobic
Inoculum: other
Degradation: = 72 % after 10 month
Result: other
Method: other
GLP: no data
Test substance: no data
Remark: After 20 weeks of incubation at 17°C in the dark, benzene
did not show signs of significant degradation. After 40
weeks, the benzene levels were reduced to 28% (i.e. 72%
removal) of the originals and after 120 weeks 99% removal). No evidence of degradation was seen in
the autoclaved controls after 40 weeks.
Source: BP Chemicals Ltd LONDON
German Rapporteur
Test condition: Benzene was studied in aquifer material from Oklahoma, USA.
The living microcosms tested consisted of anaerobic
subsurface materials from aquifers known to support
methanogenesis. Autoclaved samples were used as controls.
Reliability: (4) not assignable
02–SEP–2003 (827) (1258)
Type: anaerobic
Inoculum: other
Concentration: .27 mg/l related to Test substance
Degradation: = 72 % after 10 month
Result: other
Method: other
GLP: no data
Test substance: other TS
Remark: Removal of 0.61 mg/l benzene mixed with 0.55 mg/l toluene,
0.27 mg/l ethylbenzene and 0.26 mg/l o–xylene in
methanogenic aquifer material. Aquifer samples were
collected below a contaminated landfill, which is located on
the bank of a river in Oklahoma, USA. GC–analysis after 0,
6, 12, 20, 40 and 120 weeks of incubation. Autoclaved
samples were used as controls.
Results: After 20 weeks incubation benzene did not show
signs of significant removal. After 40 weeks, elimination of
test substance was 72% and after 120 weeks >99%. No evidence
of elimination was seen in the autoclaved controls after 40
weeks.
Source: Deutsche Shell Chemie GmbH Eschborn
German Rapporteur
Test condition: Incubation at 17 degree C in the dark.
Characteristic of aquifer water: pH 7.3; 0.7 mg/l nitrate;
218 mg/l ammonia; 344 mg/l TOC.
Test substance: High purity
Reliability: (2) valid with restrictions
02–SEP–2003 (1259)
Appendix D: Benzene SIDS Dossier
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