Registration Dossier

Physical & Chemical properties

Density

Currently viewing:

Administrative data

Link to relevant study record(s)

Referenceopen allclose all

Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
September 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
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 pycnometer method, 1999
Deviations:
no
GLP compliance:
no
Remarks:
Internal management system
Type of method:
pycnometer method
Type:
relative density
Density:
1.02
Temp.:
20 °C
Remarks on result:
other: standard deviation of 0.003

Table 3: Control pycnometer

Control sample

Standard volume

(cm3)

Measured volume

(cm3)

Deviation

(cm3)

Deviation

(%)

Temperature

(ºC)

Standard 135

6.3717

6.3710

-0.0007

-0.006

20.0

Remark:           The measured volume of the Standard 135 should be within 0.02% of the total volume of the measuring cell (VTotal= 11.7 cm3).

 

Table 5: True density of dihexadecyl peroxodicarbonate

 

Sample

Sample weight

(g)

Volume

(cm3)

True density

(g/cm3)

Temperature

(ºC)

1009530211-1

3.3577

3.2753

3.2864

1.0252

1.0217

20.0

20.0

1009530211-2

2.9797

2.9214

2.9254

1.0200

1.0186

20.0

20.0

1009530211-3

3.4748

3.4094

3.4157

1.0192

1.0173

20.0

20.0

Table 6: Relative density of dihexadecyl peroxodicarbonate:

 

Sample

/

Relative density

Dihexadecyl peroxodicarbonate

Batch no.:1009530211

Average

1.0203

St. Dev.

0.0028

RSD (%)

0.27

Conclusions:
The relative density of dihexadecyl peroxodicarbonate (batch no.: 1009530211) is 1.020 with a standard deviation of 0.003.
Executive summary:

The relative density of dihexadecyl peroxodicarbonate was determined in triplicate according to DIN 51913 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 dihexadecyl peroxodicarbonate flakes is1.020 with a standard deviation of 0.003.

Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
September 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
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 pycnometer method, 1999
Deviations:
no
GLP compliance:
no
Remarks:
Internal management system
Type of method:
pycnometer method
Type:
relative density
Density:
1.035
Temp.:
20 °C
Remarks on result:
other: standard deviation of 0.003

Table 3: Control pycnometer

Control sample

Standard volume

(cm3)

Measured volume

(cm3)

Deviation

(cm3)

Deviation

(%)

Temperature

(ºC)

Standard 135

6.3717

6.3710

-0.0007

-0.006

20.0

Remark:           The measured volume of the Standard 135 should be within 0.02% of the total volume of the measuring cell (VTotal= 11.7 cm3).

Table 5: True density of dihexadecyl peroxodicarbonate

 

Sample

Sample weight

(g)

Volume

(cm3)

True density

(g/cm3)

Temperature

(ºC)

1011540230-1

4.2536

4.1103

4.1069

1.0349

1.0357

20.0

20.0

1011540230-2

4.2741

4.1360

4.1316

1.0334

1.0345

20.0

20.0

1011540230-3

4.5100

4.3617

4.3582

1.0340

1.0348

20.0

20.0

 

Table 6: Relative density of dihexadecyl peroxodicarbonate:

 

Sample

/

Relative density

Dihexadecyl peroxodicarbonate

Batch no.:1011540230

Average

1.0345

St. Dev.

0.0008

RSD (%)

0.08

Conclusions:
The relative density of dihexadecyl peroxodicarbonate powder (batch no.: 1011540230) is 1.035 with a standard deviation of 0.001.

Executive summary:

The relative density of dihexadecyl peroxodicarbonate was determined in triplicate according to DIN 51913 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 dihexadecyl peroxodicarbonate powder is 1.035 with a standard deviation of 0.001

Description of key information

The relative density of dihexadecyl peroxodicarbonate flakes is 1.020 and of dihexadecyl peroxodicarbonate powder is 1.035. The densities differ because of differences in physical appearance (flakes/powder) and purity.

Key value for chemical safety assessment

Additional information