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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:
March 2010
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
comparable to guideline study
Remarks:
Well conducted study under Internal Management System and according to OECD guideline, DIN and ISO, certificate of analysis included in the report.
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Version / remarks:
July 1995
Deviations:
no
Qualifier:
according to
Guideline:
other: DIN 51913, Testing of carbon materials – Determination of density by gas pycnometer (volumetric) using helium as the measuring gas – Solid materials, May 2001.
Deviations:
no
Qualifier:
according to
Guideline:
other: ISO 1183-3, Plastics – Methods for determining the density of non-cellular plastics – Part 3: Gas pyknometer method, 1999
Deviations:
no
GLP compliance:
no
Remarks:
Internal Management System
Other quality assurance:
other: ISO 9001
Type of method:
pycnometer method
Type:
relative density
Density:
1.042
Temp.:
20 °C
Remarks on result:
other: St. Dev. 0.0006, RSD 0.06%

Volatiles of [1,3-phenylenebis(1-methylethylidene)]bis[tert-butyl] peroxide at 40ºC

 

Sample

Sample weight

(g)

Sample weight after 24 h at 40ºC

(g)

Volatiles

(%)

0921103066-1

9.8803

9.8444

0.36

0921103066-2

9.3738

9.3326

0.44

 

Control Pyknometer

 

Controle sample

Standard volume

(cm3)

Measured volume

(cm3)

Deviation

(%)

Temperature

(ºC)

St.0 (empty vial)

0.0000

0.0001

-

20.1

Standard 135

6.3717

6.3713

-0.006%

20.1

 

Remark:           The measured volume of St. 0 should be within 0.05% of full scale (10 cm3).

The measured volume of the Standard 135 should be within+0.01%.

 

The true density of the dried samples was determined in duplicate per dried sample.

 

True density of [1,3-phenylenebis(1-methylethylidene)]bis[tert-butyl] peroxide

 

Sample

Sample weight

(g)

Volume

(cm3)

True density

(g/cm3)

Temperature

(ºC)

0921103066-1.1

3.5072

3.3622

1.0431

20.0

0921103066-1.2

3.2320

3.1026

1.0417

20.0

0921103066-2.1

3.2573

3.1242

1.0426

20.0

0921103066-2.2

3.3424

3.2063

1.0424

20.0

 

 

Relative density of [1,3-phenylenebis(1-methylethylidene)]bis[tert-butyl] peroxide :

 

Sample

/

Relative density

[1,3-phenylenebis(1-methylethylidene)]bis[tert-butyl] peroxide

batch No.: 0909144588

Average

1.0425

St. Dev.

0.0006

RSD (%)

0.06

Conclusions:
The relative density of [1,3-phenylenebis(1-methylethylidene)]bis[tert-butyl] peroxide is 1.042 with a standard deviation of 0.001.
Executive summary:

Well conducted study under Internal Management System and according to OECD guideline, DIN and ISO, certificate of analysis included in the report.

The relative density of [1,3-phenylenebis(1-methylethylidene)]bis[tert-butyl] peroxide is 1.042 with a standard deviation of 0.001.

Description of key information

The relative density of [1,3-phenylenebis(1-methylethylidene)]bis[tert-butyl] peroxide  is 1.042 at 20ºC.

Key value for chemical safety assessment

Relative density at 20C:
1.042

Additional information

The density of [1,3-phenylenebis(1-methylethylidene)]bis[tert-butyl] peroxide was determined by an experimental study, selected as Key Study, in accordance with the OCDE Guideline (Method 109) and EEC Method A3.