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EC number: 701-218-5
CAS number: -
The stability of the substance was determined according to the OECD
guideline 111 and the EU method, C. 7 (Currenta, 2009). Based on kinetic
parameters, the following dissipation half-lives for a temperature of 25
°C were extrapolated based on the Arrhenius equation:
pH 4 (25 °C): > 1 year
pH 7 (25 °C): 573 days
pH 9 (25 °C): 15 days.
The calculated half-life of the substance in air due to indirect photo
degradation is 0.4 days, considering an OH-concentration of 500,000
radicals/cm³ as a 24-h average (Currenta, 2010). As representative
2-[2-(2-hydroxyethoxy)ethoxy]ethyl 2-hydroxyethyl phthalate was used for
calculation of the photo transformation in air, as the substance is a
A test on ready biodegradability showed that 50 % of the substance is
degraded within 28 days. These results show that the substance is not
readily biodegradable, but additionally provided evidence from an
inherent test show that the substance can be degraded in sewage
treatment plants. The substance is not readily biodegradable, but
inherent biodegradable (Bayer AG, 1994; Currenta, 2009).
From the octanol-water partition coefficient a bioconcentration factor
of 2.9 is calculated with the BCFBAF-Program using
2-[2-(2-hydroxyethoxy)ethoxy]ethyl 2-hydroxyethyl phthalate as the
representative of this UVCB-substance. Taking the measured logKow of 1.6
into account a BCF of 2.9 is estimated by the program. This value is
supported by the logKow, indicating that the substance has no potential
Adsorption / desorption
The measured Koc-value of the substance is 100 at pH 6.3 estimated by
OECD Guideline 121 (Estimation of the Adsorption Coefficient (Koc) on
Soil and on Sewage Sludge using High Performance Liquid Chromatography
(HPLC) (Currenta, 2009).This indicates only a low potential for
Henry's Law constant
The Henry's Law Constant of 0.00054 Pa m³/mol at 25 °C of the substance
is directly calculated as a ratio of the vapour pressure to the water
solubility (Currenta, 2010). According to the classification scheme of
Thomas (1990), the substance is low volatile from surface waters. As the
substance is a UVCB-substance, 2-[2-(2-hydroxyethoxy)ethoxy]ethyl
2-hydroxyethyl phthalate was used as the representative of this
UVCB-substance for calculation.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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