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Physical & Chemical properties

Stability: thermal, sunlight, metals

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Reference
Endpoint:
stability to sunlight
Type of information:
(Q)SAR
Adequacy of study:
key study
Study period:
2007
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
accepted calculation method
Justification for type of information:
1. SOFTWARE

2. MODEL (incl. version number) AopWin v1.91, based on 12hrs irradiation.

3. SMILES OR OTHER IDENTIFIERS USED AS INPUT FOR THE MODEL

4. SCIENTIFIC VALIDITY OF THE (Q)SAR MODEL
[Explain how the model fulfils the OECD principles for (Q)SAR model validation. Consider attaching the QMRF or providing a link]
- Defined endpoint:
- Unambiguous algorithm:
- Defined domain of applicability:
- Appropriate measures of goodness-of-fit and robustness and predictivity:
- Mechanistic interpretation:

5. APPLICABILITY DOMAIN
[Explain how the substance falls within the applicability domain of the model]
- Descriptor domain:
- Structural and mechanistic domains:
- Similarity with analogues in the training set:
- Other considerations (as appropriate):

6. ADEQUACY OF THE RESULT
[Explain how the prediction fits the purpose of classification and labelling and/or risk assessment]
Qualifier:
no guideline required
Principles of method if other than guideline:
- Software tool(s) used including version:
- Model(s) used: AopWin v1.91 based on 12h irradiation.
GLP compliance:
no
Test substance stable to sunlight:
no
Remarks:
S
Test substance stable to metals / metal ions:
not determined

Sensitizer: OH  Conc. of sensitizer:1500000 molecule/cm³  

Rate constant:= .0000000000025408 cm³/(molecule*sec)  

Degradation:= 50% after 4.2 day(s)

Conclusions:
Rate constant: = .0000000000025408 cm³/(molecule*sec)
Degradation : = 50% after 4.2 day(s)

Description of key information

Degradation 50% after 4.2 days

Additional information

Justification for classification or non-classification

The indirect photolysis for p-toluic acid was calculated to be; rate constant = 0.0000000000025408 cm3/(molecule.sec). There is no classification for photolytic tendency so this substance is unclassified for stability.