Registration Dossier
Registration Dossier
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EC number: 284-892-9 | CAS number: 84989-04-8 The fraction of tar acid rich in 3- and 4-methylphenol, recovered by distillation of low-temperature coal tar crude tar acids.
Biodegradation in soil
Administrative data
Link to relevant study record(s)
Description of key information
The half-lives of biodegradation of cresols in soil range between 0.6 d (m-cresol) and 1.6 d (o-cresol) in acidic sandy loam and between 0.5 d (p-cresol) and 11.3 d (m-cresol) in basic sandy silt loam.
Key value for chemical safety assessment
Additional information
The degradation behaviour of o-, m- and p-cresol was investigated by Loehr et al. (1992) in two different soils. The first soil (acidic) was a sandy loam with an organic carbon content of 0.94%. The second soil (basic) was a sandy silt loam with an organic carbon content of 3.25%. The loadings of the soils and the degradation were monitored by an HPLC method. The test was conducted in darkness at 20 °C. The test compounds degraded with the following half-lives:
Substance |
acidic soil – sandy loam half-life [days] |
basic soil – sandy silt loam half-life [days] |
o-cresol |
1.6 |
5.1 |
m-cresol |
0.6 |
11.3 |
p-cresol |
< 1 |
0.5 |
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