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EC number: 949-745-1
CAS number: -
Immobilization rates [%] after 24 and 48
hours of exposure.
In the acute immobilization test with
Daphnia magna (STRAUS), the effects of the limit loading of 100 mg/L of
the test item Esterification products of Guerbet alcohols, C24-26,
branched and cyclic with benzene-1,2,4-tricarboxylic acid 1,2-anhydride were
determined according to OECD 202 (2004) from 2019-02-01 to 2019-02-07.
The limit test was conducted under
semi-static conditions over a period of 48 hours. The limit loading was
colorless and visually clear throughout the exposure period. Twenty
daphnids, divided into 4 replicates with 5 daphnids each, were exposed
to the limit concentration and the control.
The total organic carbon concentration of
the test item was measured in the fresh media at the start of the
exposure and at the renewal of the test solutions (0 and 24 hours) as
well as in the old media at the renewal and at the end of the exposure
(48 hours) in the limit concentration and in the control.
The measured concentrations in the limit
loading were < LOQ (2 mg C/L) in the fresh medium (0 and 24 hours) and <
LOQ (2 mg C/L) in the old medium (24 and 48 hours).
Due to the unspecific analytical method, all
effect loadings (EL10/50/100) were given based on the nominal loading of
the test item.
The validity criteria of the test guideline
The test substance Esterification products of Guerbet alcohols, C24-26, branched and cyclic with benzene-1,2,4-tricarboxylic acid 1,2-anhydridewas not toxic under test conditions in the range of water solubility.
Also for the analogue substance
1,2,4-Benzenetricarboxylic acid, mixed decyl and octyl triesters no
toxicity was observed up to the limit of water solubility.
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