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m-Cresol - ipcs inchem

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OECD SIDS<br />

m- / p-CRESOL MIXTURE<br />

3. ENVIRONMENTAL FATE AND PATHWAYS ID: 15831-10-4<br />

DATE: 24.05.2004<br />

No standard test procedure, but in accordance with generally<br />

accepted scientific standards and described in sufficient<br />

detail<br />

12.05.2004 (35)<br />

Type : anaerobic<br />

Inoculum : other: shallow anaerobic alluvial sand aquifer<br />

Deg. product : yes<br />

Method : other: measured<br />

Year : 1986<br />

GLP : no<br />

Test substance : other TS: m-cresol, no purity reported (obtained from Aldrich Chemical Co.)<br />

Deg. products : 74-82-8 200-812-7 methane<br />

Method : 2 sampling sites: 1 methanogenic, 1 sulfate-reducing<br />

both aquifers receive leachate from a municipal landfill<br />

Result : lag time 43 days under sulfate-reducing and 46-90 days under<br />

methanogenic conditions, no data for complete degradation<br />

given<br />

Test condition : test medium: 50 g [wet weight] of aquifer solids and 50 ml<br />

of groundwater<br />

incubation at room temperature in the dark, quadruplicates<br />

preincubation 5 days, addition of 150 to 200 µM test<br />

substance<br />

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

No standard test procedure, but in accordance with generally<br />

accepted scientific standards and described in sufficient<br />

detail<br />

12.05.2004 (36)<br />

Type : anaerobic<br />

Inoculum : other: undefined methanogenic consortia from river sediment<br />

Concentration : 54 mg/l related to Test substance<br />

related to<br />

Deg. product : yes<br />

Method : other: measured<br />

Year : 1989<br />

GLP : no<br />

Test substance : other TS: m-cresol, no purity reported<br />

Deg. products : 74-82-8 200-812-7 methane<br />

Method : black anoxic mud collected from a river inoculated in a<br />

mineral medium (10% w/v)<br />

Result : non-acclimated consortia: turnover rate 1.10 µmol/day/g<br />

sediment dw (lag-phase 16 d)<br />

acclimated consortia: turnover rate 2.37 µmol/day/g sediment<br />

dw (lag-phase 0 d, based on a 24-days-incubation period),<br />

the CH4 production was 96 % of the theoretically possible<br />

yield<br />

Test condition : incubation at 28 degrees C in the dark<br />

cultures were refed with 60 mg/l test substance every 2-4 w<br />

for a total of 18 months<br />

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

No standard test procedure, but in accordance with generally<br />

accepted scientific standards and described in sufficient<br />

detail<br />

12.05.2004 (37)<br />

Type : aerobic<br />

Inoculum :<br />

Concentration : 10 mg/l related to Test substance<br />

322<br />

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