Registration Dossier
Registration Dossier
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EC number: 205-594-7 | CAS number: 143-24-8
Endpoint summary
Administrative data
Description of key information
Additional information
ADSORPTION / DESORPTION
The Exposure Modelling program EUSES 2,1 calculates for the Koc of Tetraglyme 3.8 L/kg (non hydrophobic substances) which means that sorption to solid is very low and an adsorption/desorption study is not warranted.
Furthermore, the US EPA property estimation program KOCWIN V2.00 calculates for the Koc of Diglyme 1.017 L/kg (based on Log Kow of -0.84) which comes to the same conclusion that sorption to solid is very low and an adsorption/desorption study is not warranted.
The statement given above fulfills the requirement for waiving as given in 1907/2006/EC Annex VIII Column 2, 9.3.1: "The study need not be conducted if based on the physicochemical properties the substance can be expected to have a low potential for adsorption e.g. the substance has a low octanol/ water partioning coefficient and is not surface active or ionisable at environmental pH (pH 4 – 9)."
AIR / WATER PARTITIONING
AIR/WATER PARTITIONING UNDER EQUILIBRIUM CONDITIONS
Tetraglyme can be mixed with water in every proportion which means that partitioning between air and water will be very low. The Exposure Modelling program EUSES 2.1 calculates e.g. for the Henry's law constant 1E-3 Pa*m3/mole which corresponds to the unitless air/water partioning coefficient of 2.0 E-7.
The US EPA property estimation program HENRYWIN V.3.2 calcultes e.g. for the Henry's law constant 5.09E-06 Pa*m3/mole which corresponds to the unitless air/water partioning coefficient of 2.06E-09.
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