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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.
EC50 (96 h) = 5 mg/L on Strongylocentrotus droebachiensis (marine, no guideline)EC50 (48 h) = 7.7 mg/L on Daphnia magna (freshwater, DIN 38412 part 11)
o-cresol - freshwater
The acute toxicity of o-cresol to Daphnia
pulex was determined in a static immobilization test (, 1978). The
test was carried out in analogy to a Dutch standard method which is
similar to OECD 202. In 3 laboratories duplicate samples with each 25
individuals of <1 day old daphnids were exposed to the test solutions.
Analytical confirmation of exposure levels was not performed. After an
exposure period of 48 h a nominal EC50 of 9.6 mg/L was found
on Daphnia pulex.
m-cresol - freshwater
The acute toxicity of m-cresol to Daphnia
pulicaria was determined in an experiment under flow-through
conditions (DeGraeve, 1980). Analytical monitoring was performed. Based
on measured concentrations a 48h-EC50 > 99.5 mg/L was
p-cresol – freshwater
The short term toxicity of p-cresol to
the freshwater invertebrate Daphnia magna was measured according
to German Guideline DIN 38412 part 11. The 48-h EC50 was 7.7 mg/L (Kuehn
et al. 1989).
m-cresol and p-cresol – marine water
The toxicity of p-cresol and m-cresol
to the freshly fertilized eggs of the marine sea urchin Strongylocentrotus
droebachiensis was determined by a static test. For p-cresol the 96
-h EC50 was 5 mg/L and for m-cresol the 96-h EC50 was 30 mg/L
(Falk-Petersen et al. 1985).
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