m-Cresol - ipcs inchem

OECD SIDS
m- / p-CRESOL MIXTURE
3. ENVIRONMENTAL FATE AND PATHWAYS ID: 15831-10-4
DATE: 24.05.2004
Result : 90% degradation during the log-phase (8 days)
Test condition : Test substance conc. 50-400 mg/l DOC, 200-1000 mg/l COD
acclimatization phase 2 days
Reliability : (2) valid with restrictions
Guideline study; basic data given
Flag : Critical study for SIDS endpoint
24.05.2004 (24)
Type : aerobic
Inoculum : activated sludge, adapted
Concentration : 200 mg/l related to COD (Chemical Oxygen Demand)
related to
Contact time :
Degradation : 95.5 (±) % after 5 day(s)
Result :
Deg. product :
Method : other: batch system (similar to OECD 302B "Zahn-Wellens Test")
Year : 1976
GLP : no
Test substance : other TS: m-cresol, no purity reported
Method : - Test compound was sole source of carbon
- Inoculum density: 100 mg dry matter/l; gradual increase of
TS concentration during 20 days adaptation period
- With volatile substances a test without inocculum was done
to differentiate the actual biological degradation from the
losses due to mere volatilization
Result : Initial degradation rate: 55.0 mg COD/g/h
Test condition : 20 +- 3 degrees C; pH 7.2; mineral salts medium; dark;
continuously stirred
Reliability : (2) valid with restrictions
Test procedure comparable to standard method and in
accordance with generally accepted scientific standards;
basic data given
Flag : Critical study for SIDS endpoint
24.05.2004 (25)
Type : anaerobic
Inoculum : anaerobic sludge
Deg. product : yes
Method :
Year : 1981
GLP : no
Test substance : other TS: m-cresol, no purity reported
Deg. products : 74-82-8 200-812-7 methane
Method : primary anaerobic sludge from 12 treatment plants receiving
mainly domestic wastewater were diluted to
10 % in a mineral salts medium, test substance
concentration: 30 mg/l; secondary anaerobic sludge from 2
treatment plants diluted to 10 % in a mineral salts medium,
test substance: 50 mg/l;
incubation for 8 weeks; triplicate samples
Result : primary sludges:
no degradation was observed in 4 sludges; degradation ranged
from 55 to 103 % in 6 sludges (lag times for approx 20 % of
theoretical CH4 production: 4-6 weeks); insufficient data
for 2 sludges.
secondary sludge:
degradation was 92% after 4 weeks with the first sludge and
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