[No public or meaningful name is available]

Density

Administrative data

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2019-01-14 - 2019-01-15

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2019

Report date:

2019

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 109 (Density of Liquids and Solids)

Version / remarks:

OECD Guidelines for the Testing of Chemicals, Method No. 109, adopted 02. Oct. 2012: “Density of Liquids and Solids“

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method A.3 (Relative Density)

Version / remarks:

Commission Regulation (EC) No 440/2008 of 30 May 2008, published on 31. May 2008 EU-Method A.3: “Relative Density”

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

other: hydrostatic balance method (Archimedes Principle)

Test material

Test material information

1

Reference substance name:

Reaction product of Graphite, acid-treated and potassium permanganate

IUPAC Name:

Reaction product of Graphite, acid-treated and potassium permanganate

Test material form:

cream / paste

Specific details on test material used for the study:

Regarding the containing water, the sample can be seen as a paste (liquid) or as a powder (if dried). Freeze drying is not possible because it is not possible to remove the whole water. Strong van der Waals forces pull the layers more and more together keeping the water trapped.

Results and discussion

Density

Density 1

Key result

Type:

density

Density:

1.301 g/cm³

Temp.:

20 °C

Density 2

Type:

relative density

Density:

1.301 other: no unit for relative density

Remarks on result:

other: see 'Remarks'

Remarks:

Density of the test sample at 20 °C to density of water at 4 °C

Applicant's summary and conclusion

Conclusions:

The study was conducted under GLP according to OECD TG 109 and EU Method A.3 without deviations and therefore reliability of Klimisch 1 has been assigned. Based on the obtained results the density of the test item Graphene oxide, reaction product of Graphite, acid-treated and potassium permanganate was determined to be 1.3006 ± 0.0106 g/cm3 at 20 ± 0.2 °C.

Executive summary:

The study was performed under GLP according to OECD 109 and EU Method A.3. The density was determined according to the hydrostatic balance method (Archimedes Principle) using the „density determination kit” of the Analytical Scale Mettler Toledo XS 205 DU.

A density of 1. 3006 ± 0.0106 g/cm3 at 20 ± 0.2 °C was measured. This value is the mean of two independent determinations ± standard deviation. Standard deviation was 0.0106 g/cm3, showing good correlation of the two determinations. As the calculated RSD 0.81 % is below 1 % the study is considered valid.