Registration Dossier
Registration Dossier
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EC number: 205-592-6 | CAS number: 143-22-6
Endpoint summary
Administrative data
Description of key information
Additional information
Transport between Environmental Compartments
The potential distribution of TGBE (Triethylene glycol monobutyl ether's or (2-(2-(2-butoxyethoxy)ethoxy)ethanol)) has been estimated using the Mackay Level III fugacity modeling approach (EPIWIN). Such modeling estimates relative distribution within different environmental compartments, based on key physical property parameters.
The Level III estimated mass balances for category members, shown in Table 1, lend further weight to limited volatilization and a preference for partitioning to water and soil.
The ethers in this category possess physical properties that suggest that once they enter the aqueous compartment, they tend to remain dissolved in water. Soil/sediment partition coefficients (Koc) of 10 have been estimated for TGBE, TetraME and TetraBE using the EPIWIN/PCKOCWIN (Table 1).
These results suggest that the category members have uniformly high soil mobility. Thus, these products can leach from soil deposits to groundwater, but can also be transported to environments where aerobic biodegradation can take place.
(Table 1).Comparison of Environmental Fate Parameters for Category Members and
Surrogates
Chemical |
Henry’s Law Constantb (atm-m3/mole) |
Photodegradation OH radical rate constantb (cm3/molecule-sec) |
Koc |
Predicted Environmental Distribution (Mackay III fugacity model) |
|||
Air (%) |
Water (%) |
Soil (%) |
Sed. (%) |
||||
TGBE 143-22-6 |
9.52 E-14 |
51.5 E-12 |
24 d |
0.0608 |
44.7 |
55.1 |
0.0766 |
TetraME 23783-42-8 |
1.57 E-13 |
54.0 E-12 |
10 b |
2.45 E-9 |
45.3 |
54.6 |
0.0755 |
TetraBE 1559-34-8 |
3.67 E-13 |
63.0 E-12 |
10 b |
6.59 E-9 |
45.1 |
54.8 |
0.0755 |
TGME 112-35-6 |
3.54 E-14 |
40.0 E-12 |
4 d |
0.0657 |
45.9 |
53.9 |
0.0765 |
TGEE 112-50-5 |
4.77 E-14 |
45.4 E-12 |
7 d |
0.0538 x 10-6 |
45.3 |
54.6 |
0.0755 |
MPEG350 9004-74-4 |
No data |
No data |
No data |
No data |
No data |
No data |
No data |
DOT4 Brake Fluid |
No data |
No data |
No data |
No data |
No data |
No data |
No data |
Polyethylene glycol monobutyl ether |
No data |
No data |
No data |
No data |
No data |
No data |
No data |
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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