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EC number: 700-071-4
CAS number: 932742-30-8
Hardener LI was assessed in an abiotic degradation study according to
EU-method C.7 and OECD guideline no. 111. Based on the results obtained
hydrolysis of SIKA Hardener LI was rapid. At pH 7 and 12 °C (285.2 K)
the degradation half-life was 0.19 days and the rate constant 3.56 days
SIKA Hardener LI was assessed in a closed
bottle test over a period of 28 days, according to OECD guideline 301 D
and EU method C.4-E.Under the test conditions biodegradation of SIKA
Hardener LI reached a mean of 63.4 % after 28 days, based on ThODNO3.
However the pass level of 60 % was not reached within a 10-day period.
Therefore, the test item was considered ready biodegradable failing the
10 day window. The correspondingdegradation rate was calculated to be
7.70E‑06 d-1or 3.210E‑07 h-1.
to the immediate hydrolysis of SIKA Hardener LI upon contact with water,
experimental determination of the adsorption coefficient was technically
not feasible. Instead, experimental determination of the adsorption
coefficient was replaced by a theoretical based evaluation. The log Koc
of SIKA Hardener LI was calculated resulting in a log Koc of 10.18 (Epi
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