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m-Cresol - ipcs inchem

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OECD SIDS<br />

p-CRESOL<br />

3. ENVIRONMENTAL FATE AND PATHWAYS ID: 106-44-5<br />

DATE: 24.05.2004<br />

E4 cells/l and 4.0 (+/- 0.02) x 10-1/day with 2.3 E8 cells/l<br />

Test condition : 21 +- 3 degrees C<br />

5 inoculum concentrations between 2.3 E4 and 2.3 E8 cells/l<br />

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

Study in accordance with generally accepted scientific<br />

standards and described in sufficient detail<br />

07.05.2004 (52)<br />

Type : aerobic<br />

Inoculum : other bacteria: natural aquatic microbial assemblages<br />

Deg. product :<br />

Method :<br />

Year : 1986<br />

GLP : no<br />

Test substance : other TS: U-14C-labeled p-cresol<br />

Method : Determination of degradation kinetics over a large<br />

concentration range<br />

Tests performed in freshly collected water from a lake, a<br />

swamp surface, and seawater.<br />

Result : Date Site TS Concentr.[µg/l] Vmax[µg/l/d]<br />

June 1986 Lake 1-10000 11<br />

Dec. 1986 Lake 1-100000 36<br />

Febr. 1987 Lake 1-10000 1.3-176<br />

Oct. 1986 Sea 1-500 0.06-0.8<br />

Dec. 1986 Swamp 1-100000 40<br />

Test condition : incubation at 25 degrees C<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 />

07.05.2004 (53)<br />

Type : aerobic<br />

Inoculum : other: groundwater microorganisms<br />

Concentration : 2.1 mg/l related to Test substance<br />

related to<br />

Deg. product : no<br />

Method :<br />

Year : 1985<br />

GLP : no<br />

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

Method : Degradation of TS in surficial groundwater<br />

Result : Complete degradation within 5-8 days, lag phase 2 days<br />

Test condition : pH 5.3; 20 degrees C<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 />

24.05.2004 (54)<br />

Type : anaerobic<br />

Inoculum : anaerobic sludge<br />

Contact time :<br />

Degradation : > 100 (±) % after 15 day(s)<br />

Result : inherently biodegradable<br />

Deg. product : yes<br />

Method : other: Handbook<br />

Year : 1983<br />

GLP : no<br />

210<br />

UNEP PUBLICATIONS

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