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Physical & Chemical properties

Density

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Reference
Endpoint:
tap density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
November 16 – December 11, 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Deviations:
no
Qualifier:
according to
Guideline:
EPA OPPTS 830.7300 (Density / Relative Density / Bulk Density)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.3 (Relative Density)
Deviations:
no
GLP compliance:
yes
Type of method:
pour and tap (for solids)
Specific details on test material used for the study:
Composition: Benzenesulfonic acid, 2,4,5-trichloro-, sodium salt – 100%
CAS# 53423-65-7
EC# 258-548-3
Physical Description: White powder
Stability: Test substance was expected to be stable for the duration of testing.
Expiration Date: December 31, 2018
Key result
Type:
tap density
Density:
0.766 g/cm³
Temp.:
20 °C
Key result
Type:
pour density
Density:
0.432 g/cm³
Temp.:
20 °C

 

Test Sample 1

Test Sample 2

Sample Weight (g)

18.6

18.9

Pour Volume (V1, mL)

44

43

Volume (V2, mL) after tap

24

25

Pour Density1(g/mL)

0.423

0.440

Mean ± SD (g/mL)

0.432 ± 0.012

Tap Density1(g/mL)

0.775

0.756

Mean ± SD (g/mL)

0.766 ± 0.013

1 Density in g/mL= Weight of sample divided by Volume (V1or V2)

Conclusions:
The density of the test substance was determined to be 0.432 g/mL by the pour method and 0.766 g/mL by the tap method.
Executive summary:

In a GLP guideline study, the bulk density of the test substance was determined by the pour and tap methods based on the procedures described in  OPPTS  830.7300, OECD TG 109, and EC method A3 and found to be 0.432 g/mL and 0.766 g/mL, respectively.

Description of key information

The density of the test substance, at 20 deg. Celsius, was determined to be 0.432 g/mL by the pour method and 0.766 g/mL by the tap method.

Key value for chemical safety assessment

Additional information