2-methoxyethyl methacrylate

Distribution modelling

Administrative data

Endpoint:

distribution modelling

Type of information:

(Q)SAR

Adequacy of study:

supporting study

Study period:

2013

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 limited documentation / justification

Data source

Reference

Reference Type:

other company data

Title:

Unnamed

Year:

2013

Materials and methods

Model:

calculation according to Mackay, Level III

Calculation programme:

A Mackay level III distribution was calculated using the EPI Suite v4.1 (US-EPA)

Release year:

2 010

Test material

Test material information

Constituent 1

Reference substance name:

2-methoxyethyl methacrylate

EC Number:

230-241-9

EC Name:

2-methoxyethyl methacrylate

Cas Number:

6976-93-8

Molecular formula:

C7H12O3

IUPAC Name:

2-methoxyethyl 2-methylprop-2-enoate

Details on test material:

- Name of test material (as cited in study report): MTMA
- Smiles notation: O=C(OCCOC)C(=C)C

Results and discussion

Percent distribution in media

Other distribution results:

potential environmental distribution of MTMA obtained from a generic level III fugacity model under two emission scenarios: 
Release 100% to air:
Air: 32.5%
Water: 16.3%
Soil: 51.2%
Sediment: 0.0366%

Release 100% to water:
Air: 0.0112%
Water: 99.7%
Soil: 0.0177%
Sediment: 0.225%

Any other information on results incl. tables

Level III Fugacity Model:

Emission to air:

	Mass Amount (percent)	Half-Life (hr)	Emissions (kg/hr)
Air	32.5	8.8	1000
Water	16.3	360	0
Soil	51.2	760	0
Sediment	0.0366	3.24e+003	0

 Persistence Time: 33.5 h

 

Emission to water:

	Mass Amount (percent)	Half-Life (hr)	Emissions (kg/hr)
Air	0.0112	8.8	0
Water	99.7	360	1000
Soil	0.0177	760	0
Sediment	0.225	3.24e+003	0

 Persistence Time: 342 h

 

	Release 100% to air	Release 100% to water
Air	32.5	0.0112
Water	16.3	99.7
Soil	51.2	0.0177
Sediment	0.0366	0.225

 

The potential environmental distribution of MTMA obtained from a generic level III fugacity model under two emission scenarios is shown in the table. 

The results show that if MTMA is released into air, it mainly distributes to soil. A smaller amount remains in the air or partitions to water. If the substance is released into water, it mainly remains in water. The substance does not have a significant presence in sediment.

Applicant's summary and conclusion

Conclusions:

The environmental distribution (Mackay level III distribution) of MTMA has been modelled using EPIWEB version 4.1.
The results show that if MTMA is released into air, it mainly distributes to soil. A smaller amount remains in the air or partitions to water. If the substance is released into water, it mainly remains in water. The substance does not have a significant presence in sediment.