Registration Dossier

Diss Factsheets

Administrative data

Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
27 May 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016
Report date:
2016

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.3 (Relative Density)
Deviations:
no
GLP compliance:
yes
Type of method:
air comparison pycnometer (for solids)

Test material

Constituent 1
Chemical structure
Reference substance name:
Zirconium diboride
EC Number:
234-963-5
EC Name:
Zirconium diboride
Cas Number:
12045-64-6
Molecular formula:
ZrB2
IUPAC Name:
zirconium diboride
Test material form:
solid: particulate/powder
Details on test material:
SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: ZrB2-3.2/14
- Expiration date of the lot/batch: 04 March 2017
- Purity: 99%
STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: Controlled room temperature (15-25 ºC, below 70% relative humidity), protected from light and humidity
OTHER SPECIFICS:
Description: Grey powder (the colour was determined by visual inspection upon arrival at test facility)
Safety precautions: Routine safety precautions (lab coat, gloves, safety glasses, face mask) for unknown materials were applied to assure personal health and safety.

Results and discussion

Density
Key result
Type:
relative density
Density:
6.092
Temp.:
20.9 °C
Remarks on result:
other: Mean relative density and mean temperature based on 2 assays.

Any other information on results incl. tables

Detailed results of the two assays are given below:

Assay No. 1:

Test item sample weight: 14.2681 g

Reference volume: 79.250 cm³

Volume of the sample holder: 27.636 cm³

Temperature during the assay: 21.3°C

 Data

 P2

(PSIG)

 P3

(PSIG)

 VP

(cm³)

 Density

(g/cm³)

 Relative

density

 Mean relative

density

 Run no. 4  17.064  4.128  2.347  6.080  6.081       6.080  ± 0.001
 Run no. 5  17.089  4.134  2.347  6.079  6.080
 Run no. 6

 17.089

 4.134  2.347  6.079  6.080

Runs 1-3 were not taken into account because they did not comply with the quality criterion.

The relative density of the test item based on assay no. 1 was 6.080 ± 0.001 at 21.3°C.

Assay No. 2:

Test item sample weight: 14.4617 g

Reference volume: 79.250 cm³

Volume of the sample holder: 27.636 cm³

Temperature during the assay: 20.5°C

 Data

 P2

(PSIG)

 P3

(PSIG)

 VP

(cm³)

 Density

(g/cm³)

 Relative

density

 Mean relative

density

 Run no. 4  17.096  4.133  2.369  6.105   6.106        6.104  ± 0.003
 Run no. 5   17.096   4.140  2.371  6.100   6.100
 Run no. 6

  17.096

 4.119  2.369  6.106   6.106

Runs 1-3 were not taken into account because they did not comply with the quality criterion.

The relative density of the test item based on assay no. 2 was 6.104 ± 0.003 at 20.5°C.

The mean relative density of the test item was 6.092 +/- 0.013 at 20.9°C.

Applicant's summary and conclusion

Conclusions:
The mean relative density of the test item was determined to be 6.092 ± 0.013 at 20.9°C.

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