Zeolite, iron containing, crystalline, synthetic, non fibrous

Density

Link to relevant study record(s)

Reference

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

14 Nov 2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.3 (Relative Density)

Type of method:

air comparison pycnometer (for solids)

Remarks:

helium gas

Type:

relative density

Density:

ca. 2 other: dimensionless

Temp.:

20 °C

Results
test 1 (wt. taken = 1.9052 g)

Run	Volume (cm^3)	Density (g/cm^3)
1*	0.9199	2.0710
2*	0.9377	2.0317
3*	0.9459	2.0142
4*	0.9495	2.0065
5	0.9530	1.9992
6	0.9554	1.9942
7	0.9519	2.0015
8	0.9570	1.9908
9	0.9528	1.9996
Mean	0.9540	1.9970
Standard deviation	0.0019	0.0039 (RSD = 0.20%)

 

test 2 (wt. taken = 2.1293 g)

Run	Volume (cm^3)	Density (g/cm^3)
1*	1.0316	2.0640
2*	1.0470	2.0338
3*	1.0582	2.0122
4*	1.0623	2.0045
5	1.0668	1.9960
6	1.0674	1.9948
7	1.0680	1.9937
8	1.0683	1.9932
9	1.0705	1.9980
Mean	1.0682	1.9933
Standard deviation	0.0013	0.0024 (RSD = 0.12%)

*Due to run precision function of the instrument, the analysis is stopped if 5 results are gained that have a variation of less than 0.05% of the cell volume, therefore the marked runs were not used to calculate the mean value

Calculation of Results
Relative density at 20.0 +/- 0.5 °C (g/cm³)
Obtained individual results: 1.9970 and 1.9933
Mean: 2.00 +/- 0.01

Description of key information

2.00 at 20 °C (Helium gas pycnometer, EU Method A3)

Key value for chemical safety assessment

Relative density at 20C:

2