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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
hydrolysis
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Not specified.
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Study taken from SNIF file. Registrant referring to studies >12 years old at the permission of ECHA. No justification for the conductance of this test is presented. Extremely limited data set is presented.

Data source

Reference
Reference Type:
other: Not stated
Title:
Unnamed
Report date:
1991

Materials and methods

Test guideline
Qualifier:
no guideline followed
Guideline:
other: Guideline not specified.
Deviations:
not specified
Principles of method if other than guideline:
Study taken from SNIF file. Registrant referring to studies >12 years old at the permission of ECHA. No justification for the conductance of this test is presented
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
-
EC Number:
406-040-9
EC Name:
-
Cas Number:
125643-61-0
Molecular formula:
C17 H25 O3 R, Where R = (C7 H15) or (C8 H17) or (C9 H19)
IUPAC Name:
C7-9-(branched)-alkyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate
Details on test material:
No data
Specific details on test material used for the study:
Details on properties of test surrogate or analogue material (migrated information):
No data
Radiolabelling:
not specified

Study design

Analytical monitoring:
not specified
Details on sampling:
No data
Buffers:
No data
Estimation method (if used):
No data
Details on test conditions:
No data
Number of replicates:
No data
Positive controls:
not specified
Negative controls:
not specified
Statistical methods:
No data

Results and discussion

Dissipation DT50 of parent compoundopen allclose all
pH:
4
Temp.:
25 °C
DT50:
259 h
pH:
7
Temp.:
25 °C
DT50:
4 390 h
pH:
9
Temp.:
25 °C
DT50:
339 h
Details on results:
No data

Applicant's summary and conclusion

Validity criteria fulfilled:
not specified
Conclusions:
At 25 deg C, the half life at various pH’s is as follows:

pH4: 10.7 d
pH7: 182.9 d
pH9: 14.1 d

This indicates that the substance is relatively stable to hydrolytic effects but is prone to hydrolysis at acid and alkali pH’s. The substance is relatively stable at environmentally relevant pH’s; however some removal due to hydrolysis can be predicted.
Executive summary:

At 25 deg C, the half life at various pH’s is as follows:

 

pH4: 10.7 d

pH7: 182.9 d

pH9: 14.1 d

 

This indicates that the substance is relatively stable to hydrolytic effects but is prone to hydrolysis at acid and alkali pH’s. The substance is relatively stable at environmentally relevant pH’s; however some removal due to hydrolysis can be predicted.