Registration Dossier
Registration Dossier
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EC number: 205-094-9 | CAS number: 133-14-2
Density
Administrative data
Link to relevant study record(s)
- Endpoint:
- relative density
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- February 27, 2012.
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Well conducted study, according to OECD guideline, certificate of analysis included in the report.
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 109 (Density of Liquids and Solids)
- Version / remarks:
- 27th July 1995
- Deviations:
- yes
- Remarks:
- special care is taken to avoid air in the sample, because the substance is viscous.
- Principles of method if other than guideline:
- Deviation of the guidelines: special care is taken to avoid air in the sample, because the substance is viscous.
- GLP compliance:
- no
- Type of method:
- pycnometer method
- Type:
- relative density
- Density:
- 1.212
- Temp.:
- 20 °C
- Conclusions:
- The relative density of Paste of 48.7% Bis(2,4-dichlorobenzoyl) peroxide in 50.7% polydimethylsiloxane is 1.212.
- Executive summary:
The relative density of Di(2,4-dichlorobenzoyl) peroxide, paste, 50% in silicone oil was determined in triplicate according to OECD Guideline 109, and in accordance with European Chemicals Agency (ECHA), Guidance on information requirements and chemical safety assessment, Chapter R.7a, Endpoint specific guidance, May 2008.
The relative density of Paste of 48.7% Bis(2,4-dichlorobenzoyl) peroxide in 50.7% polydimethylsiloxaneis 1.212.
Reference
The weight of the empty pycnometer is 165.678g
Measurement |
Weight g
|
Weight g/100ml |
Density g/ml |
1 |
286,804 |
121,126 |
1.211 |
2 |
286,759 |
121,081 |
1.211 |
3 |
287,079 |
121,401 |
1.214 |
Average |
|
|
1.212 |
St .Dev. |
|
|
0.00173 |
RSD (%) |
|
|
0.143 |
The accuracy of the volume of the pycnometer was checked just after this determination with demineralized water.
Measurement |
Weight g
|
Weight g/100ml |
Density g/ml |
1 |
265.342 |
99,664 |
0.997 |
2 |
265.413 |
99,735 |
0.997 |
The density of water at 200C is 1.000 g/ml. The deviation of 0.003% of the calibration data is within the limits of determination. So the pycnometer has the correct volume.
Description of key information
The relative density of Paste of 48.7% Bis(2,4-dichlorobenzoyl) peroxide in 50.7% polydimethylsiloxane is 1.212.
Key value for chemical safety assessment
- Relative density at 20C:
- 1.212
Additional information
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