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Environmental fate & pathways

Henry's Law constant

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Description of key information

From the water surface, the substance will slowly evaporate into the atmosphere.

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
2.97
at the temperature of:
25 °C

Additional information

An experimental HLC value is availabe for diethylamine (CAS 109 -89 -7). In a publication of Christie and Crisp (1967), the test substance is reported to have a measured Henry's Law constant (HLC) of 2.58 Pa*m³/mol at 25 °C (cited in HENRYWIN v3.20, EPI Suite v4.11).

In addition, the HLC was calculated by using the bond estimation method of HENRYWIN v3.20 (EPI Suite v 4.11; BASF SE 2020) to be 2.97 Pa*m³/mol. This estimation refers to the uncharged molecule. The substance is within the applicability domain of the model.

In conclusion, based on a weight-of-evidence approach of the experimental and calculated data, diethylamine is expected to slowly evaporate into the atmosphere from the water surface.