Registration Dossier
Registration Dossier
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EC number: 700-342-7 | CAS number: 1163775-81-2
Endpoint summary
Administrative data
Description of key information
Environmental fate and pathways
Hydrolysis
The hydrolysis rates observed were < 10% in pH 4.00, 7.00 and 9.00 at (50±0.5)°C after 5 days, and the hydrolysis half-life was extrapolated to more than 1 year under room temperature (25°C).
Biodegradation
Biodegradation in water: screening tests
Biodegradation in water: screening tests
The study from Chen Xiaoqian (2015 ) reported that 1,2,4-Benzenetricarboxylic acid, mixed dodecyl and octyl triesters was not readily biodegradable under the present test conditions. However, inherent biodegradadtion was reported.
The study from Zhang Jingji (2015) report that 1,2,4-Benzenetricarboxylic acid, mixed dodecyl and octyl triesters was primarily biodegradable, but not ultimately biodegradable. The test substance was inherently biodegradable, but fell short of the criteria for ready biodegradation.
Bioaccumulation
Bioaccumulation: aquatic / sediment
In the study from Zhang Shenghu (2015) BCF doesn't reach the steady state at the 28th day. Therefore, the BCF28, for fish was introduced to represent BCF, the mean value was 218. During the test (28 d), the BCF28 value of test substance is 218, when exposed to the test substance solution of 0.142 mg/L. The substance is not considered as bioaccumulative.
Transport and distribution
Adsorption / desorption
Koc has been calculated with the test substances 1,2,4 -Benzenetricarboxylic acid, mixed dodecyl and octyl triesters using the computer program KOCWIN (v2.00). It is predicted that the substance has a Koc of 947000000 L/kg (MCI method, log Koc 8.976) and of 260000000 (Kow method, log Koc 8.416).
One study was performed in order to estimate the adsorption coefficient on soil and sewage sludge of the structural related substance 1,2,4 -Benzenetricarboxylic acid, decyl octyl ester (CAS No. 67989 -23 -5) / 1,2,4 -Benzenetricarboxylic acid, mixed decyl and octyl triesters (CAS No. 90218 -76 -1) using the HPLC-method according to OECD Guideline for the Testing of Chemicals No. 121. The log KOC is estimated to be > 5.67 and the KOC > 467735 and above 5000.
Therefore according to McCall et al., 1981 with a value of > 5000 the test substance is considered as immobile in soil.
Additional information
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