Registration Dossier
Registration Dossier
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EC number: 908-114-0 | CAS number: -
Endpoint summary
Administrative data
Description of key information
The adsorption coefficient (Koc) of the substance was determined using the HPLC estimation method based on soil-adsorption reference data. The study was performed in accordance with EC C.19 and OECD 121 and in compliance with GLP. The log Koc at neutral pH and ca. 20°C for the constituent with peak area of 65% was determined to be 3.85 (Koc = 7.1E3). The log Koc for the constituent with peak area of 35% was determined to be 3.52 (Koc = 3.3E3). The Koc value of 7100 L/kg is used for assesment.
The Henry's law constant is calculated using the equation from EUSES using a weighted average molecular weight of 198 g/mole, and the experimentally determined vapour pressure of 2.58 Pa (at 24 °C) and water solubility of 12.1 mg/L (at 24 °C). The Henry's Law constant at environmental temperature (12 °C) is calculated to be 21.3 Pa·m³/mol. The substance is not expected to volatilise from water to a significant extent.
Based on Level III environmental distribution modelling using EPISUITE for all constituents (assuming equal and continuous releases to air, water and soil), using the EPISuite default physico-chemical parameters for each constituent as input, it is estimated that the majority of the constituents released to the environment will partition mainly into soil (ca. 64 -79%) and water (ca. 20 -27%) with minor amounts to air (ca. 0.04 -8.2%) and sediment (all <1%).
The SimpleTreat model, which is incorporated in EUSES, simulates the distribution of the substance in a Sewage Treatment Plant (STP). Based on the molecular weight of 198 g/mole, a Koc value of 7100 L/kg, a vapour pressure of 2.58 Pa (at 24 °C) and a water solubility of 12.1 mg/L (at 24 °C), and the qualification as readily biodegradable, the model predicts that 53.9% of the substance will be degraded and that 8.0%, 34.5%, and 3.6% will partition to water, sewage sludge and air, respectively.
Additional information
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