Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

If Atmer 163 (CAS No. 97925-95-6) is released into water an evaporation from water into air is negligible due to the calculated Henry’s Law constant (0.000261 – 0.000461 Pa m³/mole). Due to the rapid half-life in air calculated according to SRC AOPWIN to be 2.988 – 3.198 h, it is concluded that the substance will not accumulate in air and will not be transported through the vapour phase into other environmental compartments in relevant amounts. Thus, air is not a likely route of environmental contamination and no accumulation and subsequent deposition of the substance is to be expected. Based on the physico-chemical properties such as low water solubility and moderate adsorption potential (log Koc of 2.46 – 3.01), sediment and soil are expected to be the main targets for environmental distribution. This assumption is in line with Level I Mackay distribution modelling of Atmer 163 in the environment (45.8% will participate to the soil and 46.3% to the sediment).

The estimated Henry's Law constant, phototransformation in air and adsorption coefficient varies between the test material components since the substance is a multi-constituent.