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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Biodegradation in water: screening tests

Administrative data

biodegradation in water: ready biodegradability
Type of information:
Adequacy of study:
key study
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
Justification for type of information:
QSAR calculations applying the valid QSAR calculation tool EPI-Suite (EPIWEB v 4.1) were conducted based on the CAS no: 97281-48-6

Data source

Reference Type:
other: QSAR calculation

Materials and methods

Principles of method if other than guideline:
BIOWIN v4.10

Test material

Constituent 1
Chemical structure
Reference substance name:
Phosphatidylcholines, soya, hydrogenated
EC Number:
EC Name:
Phosphatidylcholines, soya, hydrogenated
Cas Number:
Molecular formula:
[(2R)-2,3-di(octadecanoyloxy)propyl] 2-(trimethylazaniumyl)ethyl phosphate
Test material form:
other: Estimation based on CAS number
Details on test material:
CAS number 97281-48-6
Specific details on test material used for the study:
QSAR calculation based on CAS: 97281-48-6

Results and discussion

% Degradation
Key result
probability of ready biodegradability (QSAR/QSPR)
Remarks on result:
not readily biodegradable based on QSAR/QSPR prediction
Details on results:
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.9356
Biowin2 (Non-Linear Model) : 0.9736
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 2.3256 (weeks-months)
Biowin4 (Primary Survey Model) : 3.7009 (days-weeks )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.7640
Biowin6 (MITI Non-Linear Model): 0.5653
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.4786
Ready Biodegradability Prediction: NO

Applicant's summary and conclusion

Interpretation of results:
not readily biodegradable
Based on QSAR (BIOWIN v4.10) estimations, phosphatidylcholines, soya, hydrogenated is not readily biodegradable.
Executive summary:

Based on QSAR (BIOWIN v4.10) estimations, phosphatidylcholines, soya, hydrogenated is not readily biodegradable.