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Environmental fate & pathways

Bioaccumulation: aquatic / sediment

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Endpoint:
bioaccumulation in aquatic species: fish
Type of information:
(Q)SAR
Adequacy of study:
weight of evidence
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:
Refer to the Category Approach Justification document provided in IUCLID6 Section 13.
Principles of method if other than guideline:
Calculation based on BCFBAF v3.01, Estimation Programs Interface Suite™ for Microsoft® Windows v 4.11. US EPA, United States Environmental Protection Agency, Washington, DC, USA.
GLP compliance:
no
Test organisms (species):
other: fish
Route of exposure:
aqueous
Test type:
other: calculation
Water / sediment media type:
natural water: freshwater
Details on test conditions:
For further detailed description on the model and its applicability, see "Any other information on materials and methods incl. tables" and attached model background information in "Overall remarks, attachments".
Details on estimation of bioconcentration:
BASIS FOR CALCULATION OF BCF
- Estimation software: BCFBAF v3.01
- Result based on measured log Kow of: 2.19
- Result based on calculated log Kow of: 4.39 (estimated, KOWWIN v.1.68)
Type:
BCF
Value:
70.8 L/kg
Basis:
whole body w.w.
Remarks on result:
other: LogKow based estimate
Details on results:
For detailed description on on the prediction see "Any other information on results".

SMILES : S(=O)(=O)(O)OCCCCCCCCCCCCCCCC

CHEM : 1-HEXADECANOL, HYDROGEN SULFATE, SODIUM SALT

MOL FOR: C16 H34 O4 S1

MOL WT : 322.51

--------------------------------- BCFBAF v3.01 --------------------------------

Summary Results:

Log BCF (regression-based estimate): 1.85 (BCF = 70.8 L/kg wet-wt)

============================= BCF (Bioconcentration Factor): =============================

Log Kow (estimated) : 4.39

Log Kow (experimental): not available from database

Log Kow used by BCF estimates: 2.19 (user entered)

Equation Used to Make BCF estimate:

Log BCF = 1.85 (Ionic; 11 or more -CH2- groups)

Estimated Log BCF = 1.850 (BCF = 70.79 L/kg wet-wt)

Conclusions:
The substance fits into the applicability domain of the model. The prediction is valid.
Endpoint:
bioaccumulation in aquatic species: fish
Type of information:
(Q)SAR
Adequacy of study:
weight of evidence
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:
Refer to the Category Approach Justification document provided in IUCLID6 Section 13.
Principles of method if other than guideline:
Calculation based on BCFBAF v3.01, Estimation Programs Interface Suite™ for Microsoft® Windows v 4.11. US EPA, United States Environmental Protection Agency, Washington, DC, USA.
GLP compliance:
no
Test organisms (species):
other: fish
Route of exposure:
other: aqueous and dietary
Test type:
other: calculation
Water / sediment media type:
natural water: freshwater
Details on test conditions:
For further detailed description on the model and its applicability, see "Any other information on materials and methods incl. tables" and attached model background information in "Overall remarks, attachments".
Details on estimation of bioconcentration:
BASIS FOR CALCULATION OF BCF
- Estimation software: BCFBAF v3.01
- Result based on measured log Kow of: 2.19
- Result based on calculated log Kow of: 4.39 (estimated, KOWWIN v.1.68)
Type:
BAF
Value:
10.03 L/kg
Basis:
whole body w.w.
Remarks on result:
other: Arnot-Gobas upper trophic
Type:
BCF
Value:
10.03 L/kg
Basis:
whole body w.w.
Remarks on result:
other: Arnot-Gobas including biotransformation, upper trophic
Details on results:
For detailed description on on the prediction see "Any other information on results".

SMILES : S(=O)(=O)(O)OCCCCCCCCCCCCCCCC

CHEM : 1-HEXADECANOL, HYDROGEN SULFATE, SODIUM SALT

MOL FOR: C16 H34 O4 S1

MOL WT : 322.51

--------------------------------- BCFBAF v3.01 --------------------------------

Summary Results:

 Biotransformation Half-Life (days) : 0.0785 (normalized to 10 g fish)

 Log BAF (Arnot-Gobas upper trophic): 1.00 (BAF = 10 L/kg wet-wt)

===========================================================

Whole Body Primary Biotransformation Rate Estimate for Fish:

===========================================================

------+-----+--------------------------------------------+---------+---------

 TYPE | NUM | LOG BIOTRANSFORMATION FRAGMENT DESCRIPTION | COEFF | VALUE 

------+-----+--------------------------------------------+---------+---------

 Frag | 1 | Linear C4 terminal chain [CCC-CH3]      | 0.0341 | 0.0341

 Frag | 1 | Methyl [-CH3]                           | 0.2451 | 0.2451

 Frag | 15 | -CH2- [linear]                          | 0.0242 | 0.3628

 L Kow| * | Log Kow =  2.19 (user-entered  )       | 0.3073 | 0.6731

 MolWt| * | Molecular Weight Parameter               |        | -0.8834

 Const| * | Equation Constant                        |        | -1.5058

============+============================================+=========+=========

  RESULT  |       LOG Bio Half-Life (days)           |        | -1.1053

  RESULT  |           Bio Half-Life (days)           |        | 0.07846

  NOTE    | Bio Half-Life Normalized to 10 g fish at 15 deg C  |

============+============================================+=========+=========

 

Biotransformation Rate Constant:

 kM (Rate Constant): 8.834 /day (10 gram fish)

 kM (Rate Constant): 4.968 /day (100 gram fish)

 kM (Rate Constant): 2.794 /day (1 kg fish)

 kM (Rate Constant): 1.571 /day (10 kg fish)

 

Arnot-Gobas BCF & BAF Methods (including biotransformation rate estimates):

  Estimated Log BCF (upper trophic) = 1.001 (BCF = 10.03 L/kg wet-wt)

  Estimated Log BAF (upper trophic) = 1.001 (BAF = 10.03 L/kg wet-wt)

  Estimated Log BCF (mid trophic)  = 0.936 (BCF = 8.627 L/kg wet-wt)

  Estimated Log BAF (mid trophic)  = 0.936 (BAF = 8.627 L/kg wet-wt)

  Estimated Log BCF (lower trophic) = 0.907 (BCF = 8.065 L/kg wet-wt)

  Estimated Log BAF (lower trophic) = 0.907 (BAF = 8.067 L/kg wet-wt)

Arnot-Gobas BCF & BAF Methods (assuming a biotransformation rate of zero):

  Estimated Log BCF (upper trophic) = 1.242 (BCF = 17.45 L/kg wet-wt)

  Estimated Log BAF (upper trophic) = 1.255 (BAF = 17.99 L/kg wet-wt)

 

Conclusions:
The substance fits into the applicability domain of the model. The prediction is valid.
Endpoint:
bioaccumulation in aquatic species: fish
Type of information:
(Q)SAR
Adequacy of study:
weight of evidence
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:
Refer to the Category Approach Justification document provided in IUCLID6 Section 13.
Principles of method if other than guideline:
Calculation based on BCFBAF v3.01, Estimation Programs Interface Suite™ for Microsoft® Windows v 4.11. US EPA, United States Environmental Protection Agency, Washington, DC, USA.
GLP compliance:
no
Test organisms (species):
other: fish
Route of exposure:
aqueous
Test type:
other: calculation
Water / sediment media type:
natural water: freshwater
Details on test conditions:
For further detailed description on the model and its applicability, see "Any other information on materials and methods incl. tables" and attached model background information in "Overall remarks, attachments".
Details on estimation of bioconcentration:
BASIS FOR CALCULATION OF BCF
- Estimation software: BCFBAF v3.01
- Result based on calculated log Kow of: 5.37 (estimated, KOWWIN v.1.68)
Type:
BCF
Value:
70.8 L/kg
Basis:
whole body w.w.
Remarks on result:
other: LogKow based estimate
Details on results:
For detailed description on on the prediction see "Any other information on results".

SMILES : S(=O)(=O)(O)OCCCCCCCCCCCCCCCCCC

CHEM  : Sulfuric acid, monooctadecyl ester, sodium salt

MOL FOR: C18 H38 O4 S1

MOL WT : 350.56

--------------------------------- BCFBAF v3.01 --------------------------------

Summary Results:

Log BCF (regression-based estimate): 1.85 (BCF = 70.8 L/kg wet-wt)

============================= BCF (Bioconcentration Factor): =============================

Log Kow (estimated) : 5.37

Log Kow (experimental): not available from database

Log Kow used by BCF estimates: 5.37

Equation Used to Make BCF estimate:

Log BCF = 1.85 (Ionic; 11 or more -CH2- groups)

  

Estimated Log BCF = 1.850 (BCF = 70.79 L/kg wet-wt)

Conclusions:
The substance fits into the applicability domain of the model. The prediction is valid.
Endpoint:
bioaccumulation in aquatic species: fish
Type of information:
(Q)SAR
Adequacy of study:
weight of evidence
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:
Refer to the Category Approach Justification document provided in IUCLID6 Section 13.
Principles of method if other than guideline:
Calculation based on BCFBAF v3.01, Estimation Programs Interface Suite™ for Microsoft® Windows v 4.11. US EPA, United States Environmental Protection Agency, Washington, DC, USA.
GLP compliance:
no
Test organisms (species):
other: fish
Route of exposure:
other: aqueous and dietary
Test type:
other: calculation
Water / sediment media type:
natural water: freshwater
Details on test conditions:
For further detailed description on the model and its applicability, see "Any other information on materials and methods incl. tables" and attached model background information in "Overall remarks, attachments".
Details on estimation of bioconcentration:
BASIS FOR CALCULATION OF BCF
- Estimation software: BCFBAF v3.01
- Result based on calculated log Kow of: 5.37 (estimated, KOWWIN v.1.68)
Type:
BAF
Value:
284 L/kg
Basis:
whole body w.w.
Remarks on result:
other: Arnot-Gobas upper trophic
Type:
BCF
Value:
282 L/kg
Basis:
whole body w.w.
Remarks on result:
other: Arnot-Gobas including biotransformation, upper trophic
Details on results:
For detailed description on on the prediction see "Any other information on results".

SMILES : S(=O)(=O)(O)OCCCCCCCCCCCCCCCCCC

CHEM  : Sulfuric acid, monooctadecyl ester, sodium salt

MOL FOR: C18 H38 O4 S1

MOL WT : 350.56

--------------------------------- BCFBAF v3.01 --------------------------------

Summary Results:

 Biotransformation Half-Life (days) : 0.705 (normalized to 10 g fish)

 Log BAF (Arnot-Gobas upper trophic): 2.45 (BAF = 284 L/kg wet-wt)

===========================================================

Whole Body Primary Biotransformation Rate Estimate for Fish:

===========================================================

  ------+-----+--------------------------------------------+---------+---------

 TYPE | NUM | LOG BIOTRANSFORMATION FRAGMENT DESCRIPTION | COEFF | VALUE 

------+-----+--------------------------------------------+---------+---------

 Frag | 1 | Linear C4 terminal chain [CCC-CH3]      | 0.0341 | 0.0341

 Frag | 1 | Methyl [-CH3]                           | 0.2451 | 0.2451

 Frag | 17 | -CH2- [linear]                          | 0.0242 | 0.4112

 L Kow| * | Log Kow =  5.37 (KowWin estimate)       | 0.3073 | 1.6499

 MolWt| * | Molecular Weight Parameter               |        | -0.9553

 Const| * | Equation Constant                        |        | -1.5058

============+============================================+=========+=========

  RESULT  |       LOG Bio Half-Life (days)           |        | -0.1520

  RESULT  |           Bio Half-Life (days)           |        | 0.7046

  NOTE    | Bio Half-Life Normalized to 10 g fish at 15 deg C  |

============+============================================+=========+=========

 

Biotransformation Rate Constant:

 kM (Rate Constant): 0.9837 /day (10 gram fish)

 kM (Rate Constant): 0.5532 /day (100 gram fish)

 kM (Rate Constant): 0.3111 /day (1 kg fish)

 kM (Rate Constant): 0.1749 /day (10 kg fish)

 

Arnot-Gobas BCF & BAF Methods (including biotransformation rate estimates):

  Estimated Log BCF (upper trophic) = 2.450 (BCF = 282 L/kg wet-wt)

  Estimated Log BAF (upper trophic) = 2.453 (BAF = 283.7 L/kg wet-wt)

  Estimated Log BCF (mid trophic)  = 2.583 (BCF = 382.5 L/kg wet-wt)

  Estimated Log BAF (mid trophic)  = 2.628 (BAF = 424.6 L/kg wet-wt)

  Estimated Log BCF (lower trophic) = 2.622 (BCF = 419.1 L/kg wet-wt)

  Estimated Log BAF (lower trophic) = 2.817 (BAF = 656.3 L/kg wet-wt)

 

Arnot-Gobas BCF & BAF Methods (assuming a biotransformation rate of zero):

  Estimated Log BCF (upper trophic) = 4.129 (BCF = 1.347e+004 L/kg wet-wt)

  Estimated Log BAF (upper trophic) = 5.614 (BAF = 4.111e+005 L/kg wet-wt)

 

Conclusions:
The substance fits into the applicability domain of the model. The prediction is valid.
Endpoint:
bioaccumulation in aquatic species: fish
Type of information:
(Q)SAR
Adequacy of study:
weight of evidence
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:
Refer to the Category Approach Justification document provided in IUCLID6 Section 13.
Principles of method if other than guideline:
Calculation based on BCFBAF v3.01, Estimation Programs Interface Suite™ for Microsoft® Windows v 4.11. US EPA, United States Environmental Protection Agency, Washington, DC, USA.
GLP compliance:
no
Test organisms (species):
other: fish
Route of exposure:
aqueous
Test type:
other: calculation
Water / sediment media type:
natural water: freshwater
Details on test conditions:
For further detailed description on the model and its applicability, see "Any other information on materials and methods incl. tables" and attached model background information in "Overall remarks, attachments".
Details on estimation of bioconcentration:
BASIS FOR CALCULATION OF BCF
- Estimation software: BCFBAF v3.01
- Result based on calculated log Kow of: 6.35 (estimated, KOWWIN v.1.68)
Type:
BCF
Value:
70.8 L/kg
Basis:
whole body w.w.
Remarks on result:
other: LogKow based estimate
Details on results:
For detailed description on on the prediction see "Any other information on results".

SMILES : CCCCCCCCCCCCCCCCCCCCOS(=O)(=O)O

CHEM  :

MOL FOR: C20 H42 O4 S1

MOL WT : 378.62

--------------------------------- BCFBAF v3.01 --------------------------------

Summary Results:

 Log BCF (regression-based estimate): 1.85 (BCF = 70.8 L/kg wet-wt)

============================= BCF (Bioconcentration Factor): =============================

Log Kow (estimated) : 6.35

Log Kow (experimental): not available from database

Log Kow used by BCF estimates: 6.35

 

Equation Used to Make BCF estimate:

  Log BCF = 1.85 (Ionic; 11 or more -CH2- groups)

 

 

  Estimated Log BCF = 1.850 (BCF = 70.79 L/kg wet-wt)

Conclusions:
The substance fits into the applicability domain of the model. The prediction is valid.
Endpoint:
bioaccumulation in aquatic species: fish
Type of information:
(Q)SAR
Adequacy of study:
weight of evidence
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:
Refer to the Category Approach Justification document provided in IUCLID6 Section 13.
Principles of method if other than guideline:
Calculation based on BCFBAF v3.01, Estimation Programs Interface Suite™ for Microsoft® Windows v 4.11. US EPA, United States Environmental Protection Agency, Washington, DC, USA.
GLP compliance:
no
Test organisms (species):
other: fish
Route of exposure:
other: aqueous and dietary
Test type:
other: calculation
Water / sediment media type:
natural water: freshwater
Details on test conditions:
For further detailed description on the model and its applicability, see "Any other information on materials and methods incl. tables" and attached model background information in "Overall remarks, attachments".
Details on estimation of bioconcentration:
BASIS FOR CALCULATION OF BCF
- Estimation software: BCFBAF v3.01
- Result based on calculated log Kow of: 6.35 (estimated, KOWWIN v.1.68)
Type:
BAF
Value:
455.9 L/kg
Basis:
whole body w.w.
Remarks on result:
other: Arnot-Gobas upper trophic
Type:
BCF
Value:
379.8 L/kg
Basis:
whole body w.w.
Remarks on result:
other: Arnot-Gobas including biotransformation, upper trophic
Details on results:
For detailed description on on the prediction see "Any other information on results".

SMILES : CCCCCCCCCCCCCCCCCCCCOS(=O)(=O)O

CHEM  :

MOL FOR: C20 H42 O4 S1

MOL WT : 378.62

--------------------------------- BCFBAF v3.01 --------------------------------

Summary Results:

 Biotransformation Half-Life (days) : 1.34 (normalized to 10 g fish)

 Log BAF (Arnot-Gobas upper trophic): 2.66 (BAF = 456 L/kg wet-wt)

===========================================================

Whole Body Primary Biotransformation Rate Estimate for Fish:

===========================================================

  ------+-----+--------------------------------------------+---------+---------

 TYPE | NUM | LOG BIOTRANSFORMATION FRAGMENT DESCRIPTION | COEFF | VALUE 

------+-----+--------------------------------------------+---------+---------

 Frag | 1 | Linear C4 terminal chain [CCC-CH3]      | 0.0341 | 0.0341

 Frag | 1 | Methyl [-CH3]                           | 0.2451 | 0.2451

 Frag | 19 | -CH2- [linear]                          | 0.0242 | 0.4596

 L Kow| * | Log Kow =  6.35 (KowWin estimate)       | 0.3073 | 1.9518

 MolWt| * | Molecular Weight Parameter               |        | -1.0273

 Const| * | Equation Constant                        |        | -1.5058

============+============================================+=========+=========

  RESULT  |       LOG Bio Half-Life (days)           |        | 0.1263

  RESULT  |           Bio Half-Life (days)           |        |  1.337

  NOTE    | Bio Half-Life Normalized to 10 g fish at 15 deg C  |

============+============================================+=========+=========

 

Biotransformation Rate Constant:

 kM (Rate Constant): 0.5183 /day (10 gram fish)

 kM (Rate Constant): 0.2915 /day (100 gram fish)

 kM (Rate Constant): 0.1639 /day (1 kg fish)

 kM (Rate Constant): 0.09217 /day (10 kg fish)

 

Arnot-Gobas BCF & BAF Methods (including biotransformation rate estimates):

  Estimated Log BCF (upper trophic) = 2.580 (BCF = 379.8 L/kg wet-wt)

  Estimated Log BAF (upper trophic) = 2.659 (BAF = 455.9 L/kg wet-wt)

  Estimated Log BCF (mid trophic)  = 2.717 (BCF = 521.7 L/kg wet-wt)

  Estimated Log BAF (mid trophic)  = 3.178 (BAF = 1505 L/kg wet-wt)

  Estimated Log BCF (lower trophic) = 2.760 (BCF = 574.8 L/kg wet-wt)

  Estimated Log BAF (lower trophic) = 3.666 (BAF = 4632 L/kg wet-wt)

 

Arnot-Gobas BCF & BAF Methods (assuming a biotransformation rate of zero):

  Estimated Log BCF (upper trophic) = 4.303 (BCF = 2.007e+004 L/kg wet-wt)

  Estimated Log BAF (upper trophic) = 6.735 (BAF = 5.434e+006 L/kg wet-wt)

 

Conclusions:
The substance fits into the applicability domain of the model. The prediction is valid.
Endpoint:
bioaccumulation in aquatic species: fish
Type of information:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
weight of evidence
Justification for type of information:
Refer to the Category Approach Justification document provided in IUCLID6 Section 13.
Reason / purpose for cross-reference:
read-across source
Reason / purpose for cross-reference:
read-across source
Reason / purpose for cross-reference:
read-across source
Reason / purpose for cross-reference:
read-across source
Reason / purpose for cross-reference:
read-across source
Reason / purpose for cross-reference:
read-across source
Type:
BCF
Value:
70.8 L/kg
Basis:
whole body w.w.
Remarks on result:
other: read-across from CAS 1120-01-0
Remarks:
regression based
Type:
BCF
Value:
10.03 L/kg
Basis:
whole body w.w.
Remarks on result:
other: read-across from CAS 1120-01-0
Remarks:
Arnot-Gobas
Type:
BCF
Value:
70.8 L/kg
Basis:
whole body w.w.
Remarks on result:
other: read-across from CAS 1120-04-3
Remarks:
regression based
Type:
BCF
Value:
282 L/kg
Basis:
whole body w.w.
Remarks on result:
other: read-across from CAS 1120-04-3
Remarks:
Arnot-Gobas
Type:
BCF
Value:
70.8 L/kg
Basis:
whole body w.w.
Remarks on result:
other: read across from C10ASNa
Remarks:
regression based
Type:
BCF
Value:
379.8 L/kg
Basis:
whole body w.w.
Remarks on result:
other: read-across from C20ASNa
Remarks:
Arnot-Gobas

Description of key information

BCF = 379.8 L/kg

Key value for chemical safety assessment

BCF (aquatic species):
379.8 L/kg ww

Additional information

There are no studies on the bioaccumulation of C16-20AS Na (CAS 91648-55-4) available. Thus a weight of evidence approach is applied in accordance to the REACh Regulation (EC) No 1907/2006, Annex XI General rules for adaptation of the standard testing regime set out in Annexes VII to X, 1.2. The weight of evidence combines QSAR predictions for C16AS Na (CAS 1120-01-0), C18AS Na (CAS 1120-04-3) and C20AS Na (CAS n.a.) using the following models:

BCFBAF v3.01 regression based model            

BCFBAF v3.01 Arnot-Gobas including biotransformation (upper trophic)  

 

C16AS Na (CAS 1120-01-0)

BCF = 70.8 [L/kg] - regression based model:

BCF = 10.03 [L/kg] - Arnot-Gobas including biotransformation (upper trophic)

BAF = 10.03 [L/kg] - Arnot-Gobas including biotransformation (upper trophic)

 

C18AS Na (CAS 1120-04-3)

BCF = 70.8 [L/kg] - regression based model:

BCF = 282 [L/kg] - Arnot-Gobas including biotransformation (upper trophic)

BAF = 283.7 [L/kg] - Arnot-Gobas including biotransformation (upper trophic)

 

C20AS Na (CAS n.a.)

BCF = 70.8 [L/kg] - regression based model:

BCF = 379.8 [L/kg] - Arnot-Gobas including biotransformation (upper trophic)

BAF = 455.9 [L/kg] - Arnot-Gobas including biotransformation (upper trophic)