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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 3. Number of live offspring of the
filial generation (F1) of the control and 1 mg/L test loading rate
during the 21 d test; mean value, standard deviation (SD) and variation
* = total derived from 9 surviving F1
animals at 1 mg/L test loading rate.
The number of live offspring of the Filial
generation (F1), derived from the surviving animals of the Parental
generation (P), in the control and 1 mg/L test loading rate were not
Table 4. Body length (mm) of living
animals of the Parental generation (P) at the end of the 21 d test;
mean-value, standard deviation (SD) and variation coefficient (Vc).
* = animal died on day 6.
Mean body lengths of surviving animals of
the Parental generation (P) were comparable in the control and at 1 mg/L
loading rate after 21 d.
(21day): ≥1 mg/L, reproduction, growth and mortality Daphnia
magna, reliability 1 (read-across from Crude Tall Oil).
is a UVCB substance and compositional information has been used in
conjunction with validated QSARs to derive long-term No Observed Effect
Concentrations (NOECs) for its constituent blocks. Calculation of PNECs
for the aquatic compartment will be based on data for the constituent
blocks rather than on data for the whole substance. Further testing for
long-term toxicity to invertebrates will therefore not contribute to the
database that is required to complete the assessment of the substance.
are no data for long-term toxicity of the substance to aquatic
invertebrates. However reliable results are available for the
closely-related substance, Crude Tall Oil (CAS No. 8002-26-4). A 21 day
NOELR of ≥1 mg/L has been determined for the effects of the substance on
reproduction, growth and mortality of Daphnia magna. The result
was obtained in a test conducted on a sample of CTO that showed the
highest toxicity in short-term tests with D. magna.
of long-term toxicity data for aquatic invertebrates from CTO to DTO is
justified on the grounds that all the chemical constituents that are
present in DTO are present in CTO i.e. fatty acids, resin acids,
polymers and neutral compounds containing alcohols, hydrocarbons etc.
The chemical constituent blocks of which they are comprised are
compositionally very similar and are made up of constituents with common
functional groups and properties. As a result the substances share very
similar physicochemical properties both in terms of their bulk
properties and the properties of the constituent blocks. CTO does
contain some constituents that are not present in DTO and for this
reason read-across from DTO to CTO is not considered appropriate.
However for the purposes of read-across from CTO to DTO this is only
likely to make the outcome conservative i.e. if anything the hazard of
DTO is likely to be overestimated. A more detailed description of the
technical justification for read-across is given in Section 1.4 of the
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