m-Cresol - ipcs inchem

OECD SIDS
m- / p-CRESOL MIXTURE
3. ENVIRONMENTAL FATE AND PATHWAYS ID: 15831-10-4
DATE: 24.05.2004
90% after 5 weeks with the second (degradation related to
theoretical methane and CO2 production)
Test condition : 35 degrees C, due to storage of sludges before incubation,
lag phase of methanogenesis could be increased in some
sludges
Reliability : (2) valid with restrictions
Test procedure comparable to standard method and in
accordance with generally accepted scientific standards;
detailed documentation of test procedure and test conditions
Flag : Critical study for SIDS endpoint
12.05.2004 (26)
Type : anaerobic
Inoculum : anaerobic sludge
Concentration : 50 mg/l related to DOC (Dissolved Organic Carbon)
related to
Contact time : 56 day(s)
Degradation : (±) % after
Result :
Deg. product : yes
Method :
Year : 1984
GLP : no
Test substance : other TS: m-cresol, no purity reported
Deg. products : 74-82-8 200-812-7 methane
Method : primary and secondary anaerobic sewage sludge from 9
treatment plants diluted to 10 % in a mineral salts medium;
degradation measured as gas pressure increase
Remark : data have been published by the authors as a NTIS-study
(previous data set)
Result : in 2 different secondary sludges >75% degradation
in 9 different primary sludges degradation 0-103%
Test condition : incubation for 8 w at 35 degrees C
Reliability : (2) valid with restrictions
Test procedure comparable to standard method and in
accordance with generally accepted scientific standards;
sufficient documentation
Flag : Critical study for SIDS endpoint
12.05.2004 (27)
Type : anaerobic
Inoculum : anaerobic sludge
Concentration : 50 mg/l related to DOC (Dissolved Organic Carbon)
related to
Deg. product : yes
Method :
Year : 1988
GLP : no
Test substance : other TS: m-cresol, no purity given (obtained from Aldrich Chemicals)
Deg. products : 74-82-8 200-812-7 methane
Method : primary anaerobic digesting sludge receiving a mixture of
domestic and industrial wastewater
Result : lag time 40 days, accompanied with inhibition of gas
production
net total gas production was 75 % +/- 15 % of the
theoretical production (CH4+CO2)
Test condition : - medium 2-3 g dw/l sludge
- incubation for >= 60 d at 35 degrees C
- 3 replicates
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