Registration Dossier
Registration Dossier
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EC number: 283-406-2 | CAS number: 84625-32-1 Extractives and their physically modified derivatives such as tinctures, concretes, absolutes, essential oils, oleoresins, terpenes, terpene-free fractions, distillates, residues, etc., obtained from Eucalyptus globulus, Myrtaceae.
Bioaccumulation: aquatic / sediment
Administrative data
Link to relevant study record(s)
Description of key information
Log Kow (alpha-pinene) = 4.42
regression-based estimate, BCFBAF v3.01; BCF = 383 L/kg wet-wt
Arnot-Gobas upper trophic (including biotransformation), BCFBAF v3.01; BCF = 1421 L/kg wet-wt
TGD part. II, eq. (74); BCF = 1140 L/kg wet-wt
geometric mean = 852.90 L/kg wet-wt
Key value for chemical safety assessment
- BCF (aquatic species):
- 852.9 L/kg ww
Additional information
Eucalyptus oil is a natural complex substance. It is a mixture of several components, but three of them represent 85% of that mixture. Log Kow of each of these three components were determined. Without available experimental BCF studies, Eucalyptus oil BCF value was determined regarding the highest log Kow value of these components. The highest log Kow value is for alpha-pinene (4.42), therefore it was assumed that BCF of alpha-pinene would be conservative enough for the mixture.
Three calculation approaches were performed (Table1):
- Regression-based estimate, BCFBAF v3.01
- Arnot-Gobas upper trophic (including biotransformation), BCFBAF v3.01
- TGD part. II, eq. (74)
Table 1: Calculation approaches for BCF values of alpha-pinene.
|
log BCF |
BCF (L/kg wet-wt) |
regression-based estimate, BCFBAF v3.01 |
2.58 |
383 |
Arnot-Gobas upper trophic (including biotransformation), BCFBAF v3.01 |
3.153 |
1421 |
TGD part. II, eq. (74) |
3.057 |
1140 |
geometric mean |
2.919 |
852.90 |
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