Zeolite, cuboidal, crystalline, synthetic, non-fibrous

Density

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Qualifier:

according to guideline

Guideline:

other: DIN 66137-2

Deviations:

not specified

Principles of method if other than guideline:

The gas pycnometry (according to DIN 66137) characterizes the volume of a sample by means of pressure measurement respectively pressure comparison based on the isothermal change of state of an ideal gas. The sample mass gets exactly determined with an analytical balance and the density calculated by dividing the mass of the sample with the measured volume.
The samples have to be dry in general and if necessary dried in a drying chamber previously to the measurement. The sample is filled into a measuring cup, placed into the metering chamber and purged with measuring gas.
The factor Mpempty and the additional volume (Vadd) are known by calibration. Before measurement the pressure difference to ambient pressure is measured. The measurement starts when the gas enters the metering chamber and the equilibrium pressure pd is evaluated. The Vadd-valve is opened afterwards,
followed by a pressure compensation and the measurement of the adjusted equilibrium pressure pcd. The measuring system is brought back to ambient pressure at the end of the measuring cycle. Automatic repeated measurements may be done afterwards respectively the metering chamber may be opened and the sample extracted.

GLP compliance:

not specified

Type of method:

pycnometer method

Specific details on test material used for the study:

Zeocros CG180 (P Zeolite), 2020-531

Key result

Type:

relative density

Density:

2.31 g/cm³

Temp.:

20 °C

Conclusions:

The density measured by gas pycnometry was 2.31 g/cm³.

Executive summary:

Density measurement by helium pycnometry (according to DIN 66137-2) was performed on the zeolite Zeocros CG180.

Reference 2

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Qualifier:

according to guideline

Guideline:

other: DIN 66137-2

Deviations:

not specified

Principles of method if other than guideline:

The gas pycnometry (according to DIN 66137) characterizes the volume of a sample by means of pressure measurement respectively pressure comparison based on the isothermal change of state of an ideal gas. The sample mass gets exactly determined with an analytical balance and the density calculated by dividing the mass of the sample with the measured volume.
The samples have to be dry in general and if necessary dried in a drying chamber previously to the measurement. The sample is filled into a measuring cup, placed into the metering chamber and purged with measuring gas.
The factor Mpempty and the additional volume (Vadd) are known by calibration. Before measurement the pressure difference to ambient pressure is measured. The measurement starts when the gas enters the metering chamber and the equilibrium pressure pd is evaluated. The Vadd-valve is opened afterwards,
followed by a pressure compensation and the measurement of the adjusted equilibrium pressure pcd. The measuring system is brought back to ambient pressure at the end of the measuring cycle. Automatic repeated measurements may be done afterwards respectively the metering chamber may be opened and the sample extracted.

GLP compliance:

not specified

Type of method:

pycnometer method

Specific details on test material used for the study:

Sylosiv A4 (A Zeolite), #1000361205

Key result

Type:

relative density

Density:

2.19 g/cm³

Temp.:

20 °C

Conclusions:

The density measured by gas pycnometry was 2.19 g/cm³.

Executive summary:

Density measurement by helium pycnometry (according to DIN 66137-2) was performed on the zeolite Sylosiv A4.

Reference 3

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Qualifier:

according to guideline

Guideline:

other: DIN 66137-2

Deviations:

not specified

Principles of method if other than guideline:

The gas pycnometry (according to DIN 66137) characterizes the volume of a sample by means of pressure measurement respectively pressure comparison based on the isothermal change of state of an ideal gas. The sample mass gets exactly determined with an analytical balance and the density calculated by dividing the mass of the sample with the measured volume.
The samples have to be dry in general and if necessary dried in a drying chamber previously to the measurement. The sample is filled into a measuring cup, placed into the metering chamber and purged with measuring gas.
The factor Mpempty and the additional volume (Vadd) are known by calibration. Before measurement the pressure difference to ambient pressure is measured. The measurement starts when the gas enters the metering chamber and the equilibrium pressure pd is evaluated. The Vadd-valve is opened afterwards,
followed by a pressure compensation and the measurement of the adjusted equilibrium pressure pcd. The measuring system is brought back to ambient pressure at the end of the measuring cycle. Automatic repeated measurements may be done afterwards respectively the metering chamber may be opened and the sample extracted.

GLP compliance:

not specified

Type of method:

pycnometer method

Specific details on test material used for the study:

NaY Zeolite (Y Zeolite), RZ200094/1

Key result

Type:

relative density

Density:

2.47 g/cm³

Temp.:

20 °C

 

 

Conclusions:

The density measured by gas pycnometry was 2.47 g/cm³.

Executive summary:

Density measurement by helium pycnometry (according to DIN 66137-2) was performed on NaY zeolite.

Reference 4

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Qualifier:

according to guideline

Guideline:

other: DIN 66137-2

Deviations:

not specified

Principles of method if other than guideline:

The gas pycnometry (according to DIN 66137) characterizes the volume of a sample by means of pressure measurement respectively pressure comparison based on the isothermal change of state of an ideal gas. The sample mass gets exactly determined with an analytical balance and the density calculated by dividing the mass of the sample with the measured volume.
The samples have to be dry in general and if necessary dried in a drying chamber previously to the measurement. The sample is filled into a measuring cup, placed into the metering chamber and purged with measuring gas.
The factor Mpempty and the additional volume (Vadd) are known by calibration. Before measurement the pressure difference to ambient pressure is measured. The measurement starts when the gas enters the metering chamber and the equilibrium pressure pd is evaluated. The Vadd-valve is opened afterwards,
followed by a pressure compensation and the measurement of the adjusted equilibrium pressure pcd. The measuring system is brought back to ambient pressure at the end of the measuring cycle. Automatic repeated measurements may be done afterwards respectively the metering chamber may be opened and the sample extracted.

GLP compliance:

not specified

Type of method:

pycnometer method

Specific details on test material used for the study:

Köstrolith (X Zeolite), Lot 2006090001

Key result

Type:

relative density

Density:

2.42 g/cm³

Temp.:

20 °C

Conclusions:

The density measured by gas pycnometry was 2.42 g/cm³.

Executive summary:

Density measurement by helium pycnometry (according to DIN 66137-2) was performed on Köstrolith zeolite.

Description of key information

The relative density measured by gas pycnometry was between 2.19 and 2.47 g/cm³.

 

Additional information

The relative density measured by gas pycnometry was between 2.19 (type A zeolite) and 2.47 (type Y zeolite) g/cm³.

The highest bulk density of around 390 kg/m³ was determined with a type X zeolite, whereas a type Y zeolite showed the lowest one that amounted to 289 kg/m³.