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EC number: 939-060-6 | CAS number: -
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- disregarded due to major methodological deficiencies
- Study period:
- 2012
- Reliability:
- 3 (not reliable)
- Rationale for reliability incl. deficiencies:
- other: The test design (effusion method) is not suitable for determination of the test substance.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 012
- Report date:
- 2012
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- GLP compliance:
- no
- Type of method:
- effusion method: by loss of weight or by trapping vaporisate
Test material
- Reference substance name:
- not applicable for UVCB substances
- EC Number:
- 939-060-6
- IUPAC Name:
- not applicable for UVCB substances
- Details on test material:
- Name: Initiator 94
Batch: 004IN11
according to certificate of analysis and its addendum of 1. August 2012:
purity: 32% (main component and active species: benzpinakolsilylethers)
further composition: Phosphoric acid tributylester (Tributylphosphat) 19.3%, 1,2-Benzenedicarboxylic acid-di-2-propenylester (Diallylphthalate) 8.7%; Methylbenzene (toluol) 12.9%; Diphenylmethanone (Benzophenon) 12.4 %; 1,1,2,2-Tetraphenylethane-1,2-diol (Benzpinakol) 14.6%
Expiry date of batch: 01.02.2013
Constituent 1
Results and discussion
Vapour pressureopen allclose all
- Temp.:
- 30 °C
- Vapour pressure:
- 0.014 Pa
- Temp.:
- 45 °C
- Vapour pressure:
- 0.016 Pa
- Temp.:
- 60 °C
- Vapour pressure:
- 0.016 Pa
- Temp.:
- 75 °C
- Vapour pressure:
- 0.036 Pa
- Temp.:
- 90 °C
- Vapour pressure:
- 0.041 Pa
- Temp.:
- 105 °C
- Vapour pressure:
- 0.036 Pa
- Temp.:
- 120 °C
- Vapour pressure:
- 0.033 Pa
- Temp.:
- 135 °C
- Vapour pressure:
- 0.028 Pa
- Temp.:
- 150 °C
- Vapour pressure:
- 0.016 Pa
Any other information on results incl. tables
The test item had in all experiments an inhomogenous appearance. At the first evacuation the cells bubbled over. Then, depending on temperature, some fractions were molten. The original test item was an orange suspension which changed to yellow molten mass with white deposit.
As the cells showed no reproducible weight loss at each temperature no evaluable curve was obtained. This might be caused due to the test substance is a complex mixture and/or decomposition processes. Therefore, no vapour pressure could be stated.
At 30, 45 and 60°C a significant mass loss was observed, due to bubble over.
Applicant's summary and conclusion
- Conclusions:
- The vapour pressure was determined in a study according to OECD 104 (effusion method). No reproducible results were obtained. Therefore, the vapour pressure could not be determined.
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