Registration Dossier
Registration Dossier
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EC number: 279-506-0 | CAS number: 80584-92-5
Endpoint summary
Administrative data
Description of key information
Additional information
The compound consists of a triazine part and an amine part. Under environmental conditions it is present in its dissociated form. Therefore, separate assessments were conducted for the triazine and the amine part, respectively.
CAS 102-71-6
Due to the calculated Koc for the uncharged and the charged molecule, adsorption to the solid soil phase (e.g. clay) is not expected. Furthermore, the chemical is readily biodegradable.
CAS 80584-91-4
The adsorption/desorption behaviour of test item was investigated in accordance to OECD guideline 106 using batch equilibrium method. The test was carried out using five different types of soil. Irreversible bounding was observed.
The Koc values were determined as follows:
Eurosoil 1 = 32618
Eurosoil 2 = 709
Eurosoil 3 = 2575
Eurosoil 4 = 423
Eurosoil 5 = 20867
The k' adsortion partition coefficients were determined as follows:
Eurosoil 1, 2, 3, 5: 26- 1926 (pH CaCl2 7.4 - 3.2)
Eurosoil 4: 7 (pH CaCl2 6.5)
As the substance is ionising it could be observed that the adsorption partition coefficient increased with decreasing pH of the test solution except Eurosoil 4.
Supportingly, the pH dependency was determined according to Franco and Trapp (2008):
For the base (pka 6.98) the KOC is increasing with decreasing pH
Acid pH 4-9 : KOC 20-37
Base pH4-9: KOC 1634-80
Based on the data it can be assumed that CAS 80584 -91 -4 can be of high and low mobility in soil depending on the environmental conditions.
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