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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 />

Inoculum : other bacteria: acclimatized mixed culture of pentachlorophenol-degrading<br />

bacteria<br />

Concentration : 5 mg/l related to Test substance<br />

related to<br />

Contact time : 29 day(s)<br />

Degradation : 90 (±) % after 36 hour(s)<br />

Result :<br />

Kinetic of testsubst. : 28 hour(s) = 50 %<br />

36 hour(s) = 90 %<br />

%<br />

%<br />

%<br />

Deg. product :<br />

Method : other: Die-away Test<br />

Year : 1990<br />

GLP : no<br />

Test substance : other TS: p-cresol, gas chromatographic grade<br />

Result : no lag phase<br />

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

Study in accordance with generally accepted scientific<br />

standards and described in sufficient detail<br />

24.05.2004 (58)<br />

Type : anaerobic<br />

Inoculum : other: anaerobic sludge of a wastewater treatment plant<br />

Deg. product : no<br />

Method :<br />

Year : 1989<br />

GLP : no<br />

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

Method : Simulation of anaerobic digestion of primary and secondary<br />

sludge; digesters fed with spiked sludge; analytical<br />

measurements in sludge feed, digester mixed liquor, and<br />

mixed-liquor centrate<br />

Result : 6% of the TS were detected in waste water, 20% sorbed onto<br />

solids, and 74% were degraded<br />

Test condition : sludge retention time 30 days; 35 +- 1 degrees C<br />

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

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

scientific standards and described in sufficient detail<br />

11.05.2004 (59)<br />

Type : anaerobic<br />

Inoculum : other: anaerobic sludge from a municipal treatment plant<br />

Deg. product :<br />

Method : other: pilot plant study<br />

Year : 1994<br />

GLP :<br />

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

Method : Pilot scale anaerobic digester fed with sludge from a<br />

municipal treatment plant<br />

Result : Overall removal 99.5%<br />

Primary digester removal 96.6%<br />

Secondary digester removal 85.7%<br />

Secondary supernatant residual 0.1%<br />

Secondary sludge residual 0.4%<br />

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

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

212<br />

UNEP PUBLICATIONS

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