m-Cresol - ipcs inchem

OECD SIDS
m- / p-CRESOL MIXTURE
3. ENVIRONMENTAL FATE AND PATHWAYS ID: 15831-10-4
DATE: 24.05.2004
%
Control substance : other: phenol, 0.8 mg/l
Kinetic : 28 day(s) = 73 %
%
Deg. product :
Method : OECD Guide-line 301 D "Ready Biodegradability: Closed Bottle Test"
Year : 1988
GLP : no
Test substance : other TS: m-cresol pure
Result : 10-day window criteria is met
Test condition : Inoculum
- Type of sludge: activated sludge
- Source: treatment plant, receiving domestic sewage
- Sampling site: Odenthal
Concentration of control substance: 0.8 mg/l
Analytical parameter: Oxygen consumption
Test temperature: 20 degrees C
Test was performed in two paralleles.
Reliability : (2) valid with restrictions
Guideline Study
Flag : Critical study for SIDS endpoint
12.05.2004 (22)
Type : aerobic
Inoculum : predominantly domestic sewage
Concentration : 2.4 mg/l related to COD (Chemical Oxygen Demand)
related to
Contact time :
Degradation : = 65 (±) % after 28 day(s)
Result :
Kinetic of testsubst. : 7 day(s) = 55 - 58 %
14 day(s) = 58 - 66 %
21 day(s) = 61 - 65 %
28 day(s) = 65 - 65 %
%
Control substance : other: phenol, 2.4 mg/l
Kinetic : 28 day(s) = 69 %
%
Deg. product :
Method : OECD Guide-line 301 D "Ready Biodegradability: Closed Bottle Test"
Year : 1988
GLP : no
Test substance : other TS: m-cresol pure
Remark : In two further tested concentrations (8 and 24 mg/l) the
dissolved oxygen was completely emaciated within 7 days
(concentration of control substance 8 and 24 mg/l for tests
with 8 and 24 mg/l of test substance, respectively. Also i n
these control experiments, oxygen was emaciated).
Result : Compared to the test with 0.8 mg/l the extent of degradation
is lesser at 2.4 mg/l presumably due to the fact that most
of the oxygen was used up at the high test substance
concentration
Test condition : Inoculum / test organism
- Type of sludge: activated sludge
- Source: treatment plant, receiving domestic sewage
- Sampling site: Odenthal
Concentration of control substance: 2.4 mg/l
Analytical parameter: Oxygen consumption
Test temperature: 20 degrees C
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