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Density

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Endpoint:
relative density
Remarks:
density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
09/15/2020
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Version / remarks:
adopted on July 27, 1995
Principles of method if other than guideline:
The density is determined by measuring the volume of a known mass of the test substance by means of a gas displacement pycnometer. In gas pycnometric density measurements, the volume determined excludes the volume occupied by open pores; however, it includes the volume occupied by sealed pores or pores inaccessible to the gas if present.
The volume occupied by the test substance is determined from the exactly known volumes of the empty test chamber and expansion chamber, determined by calibration, and the pressure change of an inert gas (usually helium) in the test chamber, that results when the connection to the expansion chamber is opened. For the calculation of density the mass of the test substance is measured with an analytical balance.
The method is described in DIN 66137-2 and Ph.Eur. 2.9.23.
GLP compliance:
no
Type of method:
air comparison pycnometer (for solids)
Remarks:
with Helium gas
Key result
Type:
relative density
Density:
1.844 g/cm³
Temp.:
20 °C

Test   # 1 # 2
mass [g] *)   1.5775 1.948
temperature [°C] run 20.7 20.8
volume [cm³] 1

0.8544

1.0591 

2

0.8550

1.0599

 

3

0.8552

1.0596

 

4

0.8560

1.0604

 

5

0.8560

1.0608

 

 

 

 

average volume [cm³] (of last five runs)

0.8553

1.0600

density [g/cm³]

 

1.8443

1.8442

Conclusions:
The density of carbon black (CORAX N990 BEADS) was reported to be 1.844 g/cm3
Executive summary:

The density of carbon black (CORAX N990 BEADS) was reported to be 1.844 g/cm3

Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Principles of method if other than guideline:
No information on guideline provided
GLP compliance:
no
Type of method:
air comparison pycnometer (for solids)
Key result
Type:
relative density
Density:
> 1.7 - < 1.9 g/cm³
Temp.:
20 °C

The bulk density is between 1.25 and 40 lb/ft3 (20 -640 kg/m3), for pellets it is 200 -680 kg/m3 and for powder (fluffy) it is 20 -380 kg/m3.

Conclusions:
The density at 20 °C is reported to be between 1.7 and 1.9 g/ml. The bulk density is between 1.25 and 40 lb/ft3 (20 -640 kg/m3), for pellets it is 200 -680 kg/m3 and for powder (fluffy) it is 20 -380 kg/m3.

Description of key information

The relative density of carbon black (solid: particulate/powder) - non nano is between 1.70 and 1.9

Key value for chemical safety assessment

Relative density at 20C:
1.8

Additional information