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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Stability: thermal, sunlight, metals

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Administrative data

Link to relevant study record(s)

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.