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Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

No experimental results are available concerning the transport and distribution of Butyldiethanolamine in different environmental compartments.

Absorption / desorption

Based upon the intrinsic properties of the substance (i.e. LogPow = 0.58 at 25 °C (pH 10), BASF AG, 1993) and in accordance with the REACH Regulation, no experiment is triggered to determine the organic carbon-normalized sorption coefficient (Koc).

Nevertheless, the soil adsorption for BDEA has been calculated by KOCWIN v2.0 (Chemservice S.A., 2015). The traditional method gave a Koc of 2.279 L/kg, whereby the MCI method reveals a value of 10 L/kg. as result. The MCI method is taken more seriously into account due to the fact, that it includes improved correction factors. Conclusively, the substance possesses a low to medium affinity to soil.

Henry's Law Constant

The distribution of BDEA between aqueous solutions and air was determined by calculation using the software tool HENRYWIN v3.20 (Chemservice S.A., 2016). The bond contribution methodology splits a compound into smaller units (one atom to another atom only). The bond method includes individual hydrogen bond values; the group method does not.

Using the Bond Method, a Henry´s Law Constant of 2.04E-5 Pa*m3/mol at 25 °C was calculated . The Group Method estimated a HLC of 5.95E-9 Pa*m3/mol. These values lead to the conclusion that the substance has only a low affinity to the air compartment.

Based on the conclusions drawn above as well as the high water solubility of the substance (Water solubility = 10 g/L; Taminco BVBA, 2010), the substance will mainly be present in the water compartment.