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Appendix D - Dossier (PDF) - Tera

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date: 20–JUL–2005<br />

4. Ecotoxicity Substance ID: 71–43–2<br />

______________________________________________________________________________<br />

Species: other: Nemoura cinerea (Plecoptera, Insecta)<br />

Exposure period: 48 hour(s)<br />

Unit: mg/l Analytical monitoring: no data<br />

EC50: = 130 –<br />

Method: other<br />

Year: 1983<br />

GLP: no data<br />

Test substance: other TS<br />

Source: Deutsche Shell Chemie GmbH Eschborn<br />

German Rapporteur<br />

Test condition: At least 5 larvae of Nemoura cinerea (stonefly) were exposed<br />

in closed vessels with Dutch Standard Water (Canton J.H. &<br />

Slooff W. Ecotoxic. Envir. Saf. 6, 113–128, 1982) to various<br />

concentrations of benzene for 48 h at 19–21 degree C.<br />

The animals (age not specified) were collected from the<br />

river Rhine.<br />

Test substance: purest grade commercially available (>98% pure).<br />

Reliability: (2) valid with restrictions<br />

Flag: Risk Assessment<br />

17–MAR–2004 (1049)<br />

Species: other: Paracentrotus lividus (Echinodermata)<br />

Exposure period: 48 hour(s)<br />

Unit: mg/l Analytical monitoring: no<br />

EC : .078 –<br />

Method: other<br />

Year: 1988<br />

GLP: no data<br />

Test substance: other TS<br />

Remark: In the same study, sea urchin sperm cells were treated for<br />

5–90 min with 10 uM benzene (0.78 mg/l) prior to<br />

insemination of untreated eggs and subsequent development of<br />

embryo to the pluteus larval stage.<br />

Results:<br />

No spermiotoxicity was observed.<br />

The no. of developmental defects in larvae was increased:<br />

Control: 15.9+/–3%, 10 uM benzene: 65.9+/–15.3%.<br />

Significant methodological deficiencies<br />

Only one concentration used.<br />

The following effects of benzene were noted:<br />

significant increase in developmental defects:<br />

control: 11.8+/–6.7% (S.D.), 1ug/l benzene: 29.5+/–14.3%,<br />

p

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