Registration Dossier
Registration Dossier
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EC number: 211-059-9 | CAS number: 628-89-7
Endpoint summary
Administrative data
Description of key information
Additional information
Stability :
Phototransformation in Air: The atmospheric oxidation half life of 2-(2-chloroethoxy)ethanol was estimated using level III multimedia model it indicates that 2-(2-chloroethoxy)ethanol is not persistent in air medium as the half life period of 2-(2-chloroethoxy)ethanol in air is only 1.9days. From this it is concluded that 2-(2-chloroethoxy)ethanol is rapidly phototransformed in air.
Media |
Half life (days) |
Percent in Medium |
Air |
1.9 |
0% |
Hydrolysis :
Hydrolysis Rate Constant of 2-(2-chloroethoxy)ethanol was estimated to be 0.000000000008603 cm3/molecule-sec at half life of 1.243 days.This indicates that 2-(2-chloroethoxy)ethanol is slowly hydrolysable.
Phototransformation in Water :
No experimental data available. As this study is not a standard information requirement in REACH and there is no indication from the CSA on the need to investigate further the fate and behaviour of the substance (Annex X requirement), no further testing is considered necessary.
Phototransformation in Soil :
No experimental data available. As this study is not a standard information requirement in REACH and there is no indication from the CSA on the need to investigate further the fate and behaviour of the substance (Annex X requirement), no further testing is considered necessary.
Biodegradation :
Biodegradation in water: Screening test :
2-(2-chloroethoxy)ethanol is 50% biodegradable in water in 15 days (half-life) indicating 2-(2-chloroethoxy)ethanol is readily biodegradable in water since the half life is less than the threshold of 60 days (to qualify the chemical as persistent)
Media |
Half life (days) |
Percent in Medium |
Water |
15 |
38% |
Biodegradation in water and sediment :
Based on level III fugacity model the half life period of 2-(2-chloroethoxy)ethanol was estimated. Half life period of 2-(2-chloroethoxy)ethanol in water was observed to be 15 days while in sediment it is 140 days.Based on these half life values it is concluded that 2-(2-chloroethoxy)ethanol is readily biodegradable (non persistent) in water where as it is non biodegradable (persistent) in sediment. However it can be observed that 2-(2-chloroethoxy)ethanol does not diffuse in the sediment medium since its percentage in the sediment medium is reported to be 0% and hence persistence in the sediment medium is not likely to be critical
Media |
Half life (days) |
Percent in Medium |
Water |
15 |
38% |
sediment |
140 |
0% |
Biodegradation in Soil :
Based on level III fugacity model the half life period of 2-(2-chloroethoxy)ethanol was estimated. Half life period of 2-(2-chloroethoxy)ethanol in Soil was observed to be 30 days.Based on these half life values it is concluded that 2-(2-chloroethoxy)ethanol is readily biodegradable (non persistent) in Soil.
Media |
Half life (days) |
Percent in Medium |
Soil |
30 |
62% |
Bioaccumulation :
Bioaccumulation in Aquatic / Sediment :
Bioaccumulation is the process by which the chemical concentration in an aquatic organism achieves a level that exceeds that in water as a result of chemical uptake through all possible routes of exposure. The relationship between Bioaccumulation and Bioconcentration is that,chemicals that have potential to bioconcentrate also have potential to bioaccumulate.Bioaccumulation is closely related to bioconcentration factor (BCF).
The estimated bioconcentration factor (BCF) for 2-(2-chloroethoxy)ethanol is 3.2 which does not exceed the bioconcentration threshold of 1000. Thus it is concluded that 2-(2-chloroethoxy)ethanol is not expected to bioaccumulate in the food chain because it does not exceed the BCF criteria.
Transformation and Distribution:
Adsorption/desorption :
Soil Adsorption Coefficient i.e Koc value of 2-(2-chloroethoxy)ethanol was estimated as 1 by means of MCI method. This indicates that 2-(2-chloroethoxy)ethanol has negligible adsorption to soil and has rapid migration potential to groundwater.The key value of Koc is 1 at 25 deg C when converted is equivalent to 0.8 (log Koc =-0.09691) at 20°C
Henry's law constant :
Henry's Law states that at a constant temperature, the amount of a given gas that dissolves in a given type and volume of liquid is directly proportional to the partial pressure of that gas in equilibrium with that liquid. Henrys Law Constant of 2-(2-chloroethoxy)ethanol which is a liquid at 25 deg C is 0.00198597 Pa m³/mol
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