m-Cresol - ipcs inchem

OECD SIDS
p-CRESOL
4. ECOTOXICITY ID: 106-44-5
DATE: 24.05.2004
Endpoint : other: Photosynthesis and Respiration
Exposure period :
Unit :
Limit test :
Analytical monitoring : no
Method :
Year : 1983
GLP : no
Test substance : other TS: p-cresol, purity at least 99 %
Method : Algae exposed in a open channel experimental stream set.
Result : The net oxygen production decreased from 0.084 (control) to
0.022 mg O2/mg DW with 8 mg/l TS. Respiration in the dark
increased from -0.064 (control) to -0.182 O2/mg DW.
Reliability : (3) invalid
Unsuitable test system
07.05.2004 (104)
4.4 TOXICITY TO MICROORGANISMS E.G. BACTERIA
238
Type : aquatic
Species : activated sludge of a predominantly domestic sewage
Exposure period : 2 hour(s)
Unit : mg/l
IC50 : = 439.5 calculated
Analytical monitoring : no
Method : other: similar to OECD Guideline 209
Year : 1999
GLP : no
Test substance : other TS: p-cresol, analytical grade
Method : O2 measured with an optical scanning respirometer; endpoint:
inhibition of respiration rate
Test condition : pH 7.0; temp. 20 degrees C
Reliability : (2) valid with restrictions
Study in accordance with generally accepted scientific
standards and described in sufficient detail
Flag : Critical study for SIDS endpoint
07.05.2004 (105)
Type : aquatic
Species : activated sludge of a predominantly domestic sewage
Exposure period :
Unit : mg/l
EC75 : = 16.5
Analytical monitoring : no
Method : other: inhibition of nitrification process
Year : 1966
GLP : no
Test substance : other TS: p-cresol, no purity reported
Method : Quantitative determination of the nitrification rate (1st
step, NH4 to NO2)
colorimetric measurement of the NO2/NO3 concentration;
static test system
pre-cleaned activated sludge in particle-free communal waste
water (BOD5: 250 mg/l; NH4-N/l: 50-80 mg)
Remark : effect: inhibition of ammonia oxidation
Test condition : Exposure period: 2-4h; 25 degree C; pH 7.6-7.8
Reliability : (2) valid with restrictions
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