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Density

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Reference
Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
October 4, 2011
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Well conducted study according to EU and OECD guidelines with Internal management system and certificate of analysis included in the report.
Qualifier:
according to
Guideline:
EU Method A.3 (Relative Density)
Version / remarks:
May 31, 2008
Deviations:
no
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Version / remarks:
Adopted July 27, 1995
Deviations:
no
GLP compliance:
no
Remarks:
Internal management system
Type of method:
oscillating densitimeter
Key result
Type:
relative density
Density:
0.889 g/cm³
Temp.:
20 °C
Remarks on result:
other: The standard deviation is ± 0.0002 .

Calibration and validity verification

The calibration was carried out on August 16, 2010.

The measured density of the calibration liquids at 20°C is mentioned in table 1. Also the deviation from the literature values is mentioned. The mean value for the calibration liquids agrees within ± 0.002 g/cm3(accuracy range) with the literature values.

 

Table 1: measured density of calibration liquids at 20°C

Calibration liquid

Measurement

Density

[g/cm3]

Mean density value [g/cm3]

Deviation from literature value [g/cm3]

Demineralized water

1

0.9982

 

0.9982

 

0.0000

2

0.9982

3

0.9982

Ethanol

1

0.7897

 

0.7896

 

0.0003

2

0.7896

3

0.7896

4

0.7896

Dichloro-methane

1

1.3244

 

1.3248

 

0.0018

2

1.3251

3

1.3252

4

1.3246

 

The validity of the method was verified prior to the measurement with the test substance using demineralized water.

Measured density of water at 20°C:

measurement 1: 0.9982 g/cm3

measurement 2: 0.9982 g/cm3

measurement 3: 0.9982 g/cm3

These values agree within ± 0.0005 g/cm3with the literature value for demineralized water.

 

Density test substance

Measured density of the test substance at 20°C:

measurement 1: 0.8884 g/cm3

measurement 2: 0.8885 g/cm3

measurement 3: 0.8885 g/cm3

measurement 4: 0.8888 g/cm3 

Mean value at 20°C is 0.8886 g/cm3. The standard deviation is ± 0.0002 g/cm3. The relative density of the test substance is 0.8886.

Conclusions:
The relative density of 1,1,3,3-tetramethylbutyl hydroperoxide at 20°C is 0.8886 (± 0.0002).
Executive summary:

The relativedensity of 1,1,3,3-tetramethylbutyl hydroperoxide was determined in quadruplet according toEC Regulation No 440/2008, Guideline A.3 and 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 1,1,3,3-tetramethylbutyl hydroperoxide at 20°C is 0.8886 (± 0.0002).

Description of key information

The relative density of  1,1,3,3-tetramethylbutyl hydroperoxide at 20°C is 0.8886 (± 0.0002).

Key value for chemical safety assessment

Relative density at 20C:
0.889

Additional information

This is supported by the ACD calculation.