Registration Dossier

Environmental fate & pathways

Bioaccumulation: aquatic / sediment

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
bioaccumulation in aquatic species, other
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:
Estimated data generated using the EPI Suite program developed by the USEPA.
Qualifier:
according to
Guideline:
other: Modeling database
Principles of method if other than guideline:
Prediction done using BCFBAF (v3.01) model
GLP compliance:
not specified
Radiolabelling:
not specified
Vehicle:
not specified
Test organisms (species):
other: Fish
Route of exposure:
aqueous
Test type:
not specified
Water / sediment media type:
natural water: freshwater
Test temperature:
25 deg.C
Reference substance (positive control):
not specified
Temp.:
25 °C
Type:
BCF
Value:
2.19 L/kg
Basis:
whole body w.w.
Calculation basis:
other: estimated
Remarks on result:
other: Non-bioaccumulative

BCFBAF Program (v3.01) Results:

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

SMILES : O=C(NC(C)(C)C)C=C

CHEM : 2-Propenamide, N-(1,1-dimethylethyl)-

MOL FOR: C7 H13 N1 O1

MOL WT : 127.19

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

Summary Results:

Log BCF (regression-based estimate): 0.34 (BCF = 2.19 L/kg wet-wt)

Biotransformation Half-Life (days) : 0.0388 (normalized to 10 g fish)

Log BAF (Arnot-Gobas upper trophic): 0.19 (BAF = 1.55 L/kg wet-wt)

Log Kow (experimental): not available from database

Log Kow used by BCF estimates: 1.02

Equation Used to Make BCF estimate:

Log BCF = 0.6598 log Kow - 0.333 + Correction

Correction(s): Value

No Applicable Correction Factors

Estimated Log BCF = 0.340 (BCF = 2.19 L/kg wet-wt)

Validity criteria fulfilled:
not specified
Conclusions:
Using BCFBAF Program (v3.00) model of EPI suite (2018) the estimated bio concentration factor (BCF) for test chemical is 2.19 L/kg wet-wt at 25 deg. c which does not exceed the bioconcentration threshold of 2000. Therefore it is concluded that test chemica is nonbioaccumulative in food chain.
Executive summary:

Using BCFBAF Program (v3.00) model of EPI suite (2018) the estimated bio concentration factor (BCF) for test chemical  is 2.19 L/kg wet-wt at 25 deg. c which does not exceed the bioconcentration threshold of 2000. Therefore it is concluded that test chemica is nonbioaccumulative in food chain.

Description of key information

Using BCFBAF Program (v3.00) model of EPI suite (2018) the estimated bio concentration factor (BCF) for test chemical  is 2.19 L/kg wet-wt at 25 deg. c which does not exceed the bioconcentration threshold of 2000. Therefore it is concluded that test chemica is nonbioaccumulative in food chain.

Key value for chemical safety assessment

BCF (aquatic species):
2.19 L/kg ww

Additional information

Different studies have been conducted for test chemical and its read across chemical for bioaccumulation in aquatic organisms endpoint and their results are summarized below.

The first study was done by using BCFBAF Program (v3.00) model of EPI suite (2018) and bio concentration factor (BCF) for test chemical  was estimated to be 2.19 L/kg wet-wt at 25 deg. c
 

Next study was reviewed from authoritative database (HSDB) in this study the BCF value of test chemical estimated was 3.0 dimensionless by using an estimated log Kow of 0.57 and a regression-derived equation and it is far less than 2000 criteria of CLP regulation.

By considering both studies mentioned above it is concluded that test chemical is non bioaccumulative