Registration Dossier

Administrative data

Endpoint:
density, other
Type of information:
experimental study
Adequacy of study:
key study
Study period:
28/02/2017
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017
Report Date:
2017

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: Metller Toledo XS64
Principles of method if other than guideline:
The density of the samples is measured using the commercial balance (Mettler Toledo XS64), which functions based on the Archimedes' principle. The sample is weighed in air and in a liquid then the density is calculated by the automated software. To avoid deterioration of the samples (like chalcogenides glasses), the liquid chosen is absolute ethanol.
GLP compliance:
not specified
Type of method:
air comparison pycnometer (for solids)

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid
Specific details on test material used for the study:
The step-by-step procedure is as follows,
(i) Absoluteethanolisfilledinthecontainer.Makesurethattheleveloftheethanolimmerses the basket completely.
(ii) Note the temperature of the absolute ethanol (as shown on the thermometer attached to the device) and enter it in the balance. It is very important to periodically observe the changes in temperature and update the values in the balance. Wrong temperature value can affect the density results!
(iii) ‘Tare’ the balance.
(iv) Place the sample on the pan (in air). Wait till the value of weight is stabilized.
(v) Then, place the sample in the basket (in absolute ethanol). Wait till the value of weight is
stabilized.
(vi) Finally, the machine displays the calculated density (in g/cm3).

Results and discussion

Densityopen allclose all
Key result
Type:
density
Remarks:
B21 10 04
Density:
4.62 g/cm³
Temp.:
20 °C
Key result
Type:
density
Remarks:
B21 11 02
Density:
4.62 g/cm³
Temp.:
20 °C

Applicant's summary and conclusion