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Environmental fate & pathways

Hydrolysis

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Reference
Endpoint:
hydrolysis
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:
The hydrolysis is based on SPARC-calculations.
Qualifier:
no guideline followed
Principles of method if other than guideline:
Hydrolysis is calculated by the SPARC model.
Estimation method (if used):
The hydrolysis is calculated by SPARC.
Transformation products:
not specified
Key result
pH:
4
Temp.:
25 °C
DT50:
> 1 000 d
Type:
(pseudo-)first order (= half-life)
Key result
pH:
7
Temp.:
25 °C
DT50:
> 1 000 d
Type:
(pseudo-)first order (= half-life)
Key result
pH:
9
Temp.:
25 °C
DT50:
ca. 31 d
Type:
(pseudo-)first order (= half-life)
Validity criteria fulfilled:
not applicable
Conclusions:
The substance is not expected to hydrolyse at acid and neutral conditions (half-life >>1 yr). Some hydrolysis (DT50 = 31d, at pH=9) may take place at alkaline conditions.
Executive summary:

The hydrolysis half-lives at pH=4, 7, 9 have been calculated by SPARC. The substance is not expected to hydrolyse at acid and neutral conditions (half-life >>1 yr). Some hydrolysis (DT50 = 31d, at pH=9) may take place at alkaline conditions.

Description of key information

The hydrolysis half-lives at pH=4, 7, 9 have been calculated by SPARC. The substance is not expected to hydrolyse at acid and neutral conditions (half-life >>1 yr). Some hydrolysis (DT50 = 31d, at pH=9) may take place at alkaline conditions.

Key value for chemical safety assessment

Additional information

The hydrolysis half-lives at pH=4, 7, 9 have been calculated by SPARC.The substance is not expected to hydrolyse at acid and neutral conditions (half-life >>1 yr). Some hydrolysis (DT5031d, at pH=9) may take place at alkaline conditions.