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Administrative data

Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
22.02.2021
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2021
Report date:
2021

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7300 (Density / Relative Density / Bulk Density)
Version / remarks:
2002
Deviations:
not specified
Qualifier:
according to guideline
Guideline:
EU Method A.3 (Relative Density)
Deviations:
not specified
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Version / remarks:
2012
Deviations:
not specified
GLP compliance:
no
Type of method:
pycnometer method

Test material

Constituent 1
Chemical structure
Reference substance name:
4-chlorobenzoic acid
EC Number:
200-805-9
EC Name:
4-chlorobenzoic acid
Cas Number:
74-11-3
Molecular formula:
C7H5ClO2
IUPAC Name:
4-chlorobenzoic acid
Test material form:
solid: particulate/powder
Details on test material:
white to yellowish crytalline powder

Results and discussion

Density
Key result
Type:
relative density
Density:
1.524 g/cm³
Temp.:
20 °C

Any other information on results incl. tables

Two tests with different amounts of the test item were performed to determine the relative density D420at a temperature of 20 °C ± 0.01 °C. Table 1 compiles the results.

Table 1:    Results of the measurement of the density of the test item

Test No.

Temperature [°C]

Amount of test item [g]

Average sample volume [cm³]

Density [g/cm³][1]

1

20

9.29551

6.09039

1.52387

2

20

9.28096

6.09713

1.52457

The mean density of the test item at 20 °C is 1.5242 g/cm³. The relative density D420is calculated by dividing the density of the test item by the density of water at 4 °C (0.9999750 g/cm³).

The relative density is          D420=1.524.

Applicant's summary and conclusion

Conclusions:
The relative density of 4-Chlorobenzoic acid is 1.524 as determined via the pycnometer method.
Executive summary:

According to OECD Test Guideline 109 (2012), Regulation (EC) No 440/2008 Method A.3. and EPA OCSPP Test Guideline OPPTS 830.7300 (2002), the Relative Density D420 of the test item para-Chlorobenzoic acid at 20 °C ± 0.01 °C (compared to water at 4 °C) is determined to be:

D420 = 1.524