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EC number: 232-304-6
CAS number: 8002-26-4
A complex combination of tall oil rosin and fatty acids derived from acidulation of crude tall oil soap and including that which is further refined. Contains at least 10% rosin.
Table 1. Test results - percentage
mortality for each observation period
0-24 h start
0-24 h end
24-48 h start
24-48 h end
48-72 h start
48-72 h end
72-96 h start
72-96 h end
Table 2. Results of TOC analysis of
test media (mg/L)
Concentrations of Total Organic Carbon
(TOC) were determined in the fresh and old Control media and 100 mg/L
WAFs at the start and end of the first and last 24 hour exposure period.
The measured TOC concentrations ranged between 1.7 and 3.4 mg/L in the
Control media and 5.3 and 7.2 mg/L in the 1000 mg/L WAFs. At
observation periods 0 – 24 h and 72 – 96 h TOC-values of the Control
were relatively stable (within ± 11 %) of initial values. TOC-values in
the 100 mg/L WAFs slightly decreased at observation periods 0 – 24 h (23
%) and 72 – 96 h (13 %).
Results of GCMS analysis of test media (mg/l)
Quantitative GCMS-values are based on results and/or limits of detection
Concentrations of GCMS-detected
components in the Control were below detection limits at start and end
of observation period 0 – 24 h. Traces of Abietic acid could be found at
start and end of observation period 72 – 96 h. This was probably due to
slight residues of Abietic acid in the gas chromatograph and/or from the
glass vessels that were used for preparation of the Water Accommodated
Concentrations of GCMS-detected
components at test loading rate 100 mg/L were below detection limits at
the start and end of observation period 0 – 24 h, with the exception of
Abietic acid that could be found in traces at the end of this
observation period. Traces of 9-Octadecenoic acid could be found at the
start of observation period 72 – 96 h. At the end of this observation
period concentration of 9-Octa-decenoic acid had decreased below the
detection limit (0.0064 mg/l). The decrease was probably caused by
biodegradation of this component. Traces of Abietic acid also could be
found at the start and end of observation period 72 – 96 h. Total
concentrations of GCMS-detected components increased (44 %) during
observation period 0 – 24 h and decreased (32 %) during observation
period 72 – 96 h.
GCMS concentrations were lower
compared to TOC concentrations. This was to be expected because the
GCMS-analysis only quantified selected components of the test substance
whereas TOC-analysis obtains a sum parameter for all dissolved organic
results for short-term toxicity to fish are summarised in Table 7.1.
data are available for short-term toxicity to fish. A 96-hour LL50
value of >100 mg/L and NOELR of 100 mg/L have been determined for the
effects of the substance
on mortality of Danio rerio. The fish were exposed to
water-accommodated fractions of the substance. The result is supported
by similar results from five other studies.
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