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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Distribution modelling

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Administrative data

Endpoint:
distribution modelling
Type of information:
(Q)SAR
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification
Justification for type of information:
please refer to 'Attached Justification'

Data source

Reference
Reference Type:
other: Mackay calculation
Title:
Unnamed
Year:
2013
Report date:
2013

Materials and methods

Model:
calculation according to Mackay, Level I
Calculation programme:
Level I Version 3.0
Release year:
2 004
Media:
air - biota - sediment(s) - soil - water

Test material

Constituent 1
Chemical structure
Reference substance name:
2-methylaminoethanol
EC Number:
203-710-0
EC Name:
2-methylaminoethanol
Cas Number:
109-83-1
Molecular formula:
C3H9NO
IUPAC Name:
2-(methylamino)ethan-1-ol
Details on test material:
- Name of test material (as cited in study report): CAS 109-83-1, 2-(methylamino)ethanol
- Analytical purity: pure substance

Study design

Test substance input data:
The following physicochemical properties of the substance were used to calculate the distribution:

- Molar mass: 75.11 g/mol
- Data temperature: 25 °C (based on vapour pressure)
- Water solubility: 1000000 g/m³ (GESTIS, 2010; HSDB, 2010; miscible)
- Vapour pressure: 144 Pa (HSDB, 2010)
- log Pow: -0.91 (BASF AG, 1989; BRU 89.018)
- Melting point: -4.5 °C (GESTIS, 2010)
- Henry's law constant: 1.08E-2 Pa*m³/mol (calculated by Mackay Level I program)
Environmental properties:
Volume Density Org. C Fish lipid
(m³) (kg/m³) (g/g) (g/g)
air 6.0E+09 1.19
water 7.0E+06 1000
soil 45000 1500 0.02
sediment 21000 1300 0.05
susp. part. 35.0 1500 0.167
fish 7.0 1000 0.05
aerosole 0.120 1500

Results and discussion

Percent distribution in media

Air (%):
0.373
Water (%):
99.6

Any other information on results incl. tables

Over time, the uncharged substance will preferentially distribute into the compartments water (99.6%). However, as the model does not consider the ionic character of the molecule at environmental relevant pH conditions, the distribution into water may be underestimated by the model.

Applicant's summary and conclusion

Conclusions:
Over time, the uncharged substance will preferentially distribute into the compartments water (99.6%)