## Diss Factsheets

Environmental fate & pathways

## Distribution modelling

### Administrative data

Endpoint:
distribution modelling
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
accepted calculation method
Justification for type of information:
1. SOFTWARE
see Mackay, D. 2001. "Multimedia Environmental Models: The Fugacity Approach - Second Edition", Lewis Publishers, Boca Raton, pp. 1-261.

2. MODEL (incl. version number)
Mackay Level I v3.00

3. SMILES OR OTHER IDENTIFIERS USED AS INPUT FOR THE MODEL
- molar mass
- temperature
- water solubility
- vapor pressure
- melting point
- log kow

4. SCIENTIFIC VALIDITY OF THE MODEL
For details see Mackay, D. (2001); Mackay et al. (1996)

5. APPLICABILITY DOMAIN
For details see Mackay, D. (2001); Mackay et al. (1996)

6. ADEQUACY OF THE RESULT
A Level I calculation is not required under REACh but gives a general impression of the likely media into which a chemical will tend to partition and an indication of relative concentrations in each medium.

Reference Type:
other: Mackay
Title:
Unnamed
Year:
2019
Report date:
2019

### 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
Reference substance name:
2-{2-[2-(acryloyloxy)-1-methylethoxy]-1-methylethoxy}-1-methylethyl acrylate
Molecular formula:
C15H24O6
IUPAC Name:
2-{2-[2-(acryloyloxy)-1-methylethoxy]-1-methylethoxy}-1-methylethyl acrylate

#### Study design

Test substance input data:
The following physico-chemical properties of the substance were used to calculate the distribution:
- molecular mass: 300.35 g/mol
- data temperature: 20 °C
- log Kow: 2.7 (1)
- water-solubility: 4000 g/m³ (20 °C) (2)
- Henry´s law constant: 3.30E-04 Pa*m³/mo (3)
- vapour pressure: 4.40-03 Pa (20°C) (2)
- melting point: -20 °C (4)

source:
(1) BASF SE, 2019, rep.no.: 19L00100
(2) BASF SE, 2010, rep. no.: 09S01183
(3) Calculated by Mackay Level I program
(4) Polymer Handbook, 2005, pub.: John&Sons

Environmental properties:
Volume Density Org. C Fish lipid
(m³) (kg/m³) (g/g) (g/g)
Air 6.0E+09 1.21
Aerosol 0.120 1500
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

Air (%):
0.01
Water (%):
92.6
Soil (%):
3.67
Sediment (%):
3.71

#### Any other information on results incl. tables

Over time, the substance will preferentially distribute into the compartment water (92.6%) and parly in the compertments soil (3.67%) and sediment (3.71%).

The data refer to the uncharged molecule. The substance is not supposed to be charged under environmentally relevant conditions (see IUCLID Ch. 4.21).