Disodium 3,3'-[carbonylbis[imino(3-methoxy-4,1-phenylene)azo]]bis[benzenesulphonate]

Density

Administrative data

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Experimental starting date: 28 April 2017; Experimental completion date: 03 November 2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2018

Report date:

2018

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 109 (Density of Liquids and Solids)

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method A.3 (Relative Density)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

pycnometer method

Test material

Test material information

Constituent 1

Reference substance name:

Disodium 3,3'-[carbonylbis[imino(3-methoxy-4,1-phenylene)azo]]bis[benzenesulphonate]

EC Number:

233-316-4

EC Name:

Disodium 3,3'-[carbonylbis[imino(3-methoxy-4,1-phenylene)azo]]bis[benzenesulphonate]

Cas Number:

10114-86-0

Molecular formula:

C27H22N6Na2O9S2

IUPAC Name:

disodium 3,3'-[carbonylbis[imino(3-methoxy-4,1-phenylene)azo]]bis[benzenesulphonate]

Test material form:

solid: particulate/powder

Details on test material:

Identification: CIM-42(Direct Yellow 132)
Appearance/physical state: dark orange colored powder
Batch: 161011K
Purity: 94.0%
Expiry / Retest date: 01 December 2017
Storage conditions: Room temperature, in the dark over silica

Results and discussion

Density

Density 1

Key result

Type:

relative density

Density:

1.45 other: dimensionless

Temp.:

20 °C

Density 2

Type:

density

Density:

1 450 kg/m³

Temp.:

20 °C

Any other information on results incl. tables

Calibration:

The pressure readings and the calculated volume for the reference and sample cells are shown in the following table:

Determination	P1 (psig)	P2 (psig)	P3 (psig)	P4 (psig)	Reference Cell Volume (cm^3)	Sample Cell Volume (cm^3)
1	17.318	6.558	17.440	8.642	90.830	149.028
2	17.290	6.548	17.400	8.624	90.803	148.962
3	17.282	6.547	17.407	8.629	90.870	148.998

Mean reference cell volume   :          90.834 cm³
Mean sample cell volume       :          148.996 cm³

As the reference cell volume and sample cell volume were within the defined tolerance (90.953 ± 1.0 cm³and 149.225 ± 1.0 cm³for the reference and sample cell volumes respectively) the gas comparison pycnometer was therefore considered acceptable for use.

Sample:

The pressure readings, calculated volumes and density values obtained for the test item are shown in the following table:

Determination	Replicate	P1(sample) (psig)	P2(sample) (psig)	Volume (cm^3)	Density (kg/m^3)	Mean Density (kg/m^3)
1	A	17.144	7.139	21.696	1.46 x 10^3	1.45 x 10^3
	B	17.288	7.205	21.879	1.45 x 10^3
	C	17.235	7.182	21.851	1.45 x 10^3
2	A	17.128	7.044	18.960	1.46 x 10^3	1.45 x 10^3
	B	17.256	7.104	19.189	1.44 x 10^3
	C	17.167	7.068	19.209	1.44 x 10^3

Mean density             :          1.45 x 10³kg/m³
Relative density          :          1.45
Temperature               :          20.0 ± 0.5 °C

Applicant's summary and conclusion

Conclusions:

The density of the test item has been determined to be 1.45 x 103 kg/m3 at 20.0 ± 0.5 °C; relative density of 1.45.

Executive summary:

The determination was carried out by a gas comparison pycnometer procedure designed to be compatible with Method A.3 Relative Density of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 109 of the OECD Guidelines for Testing of Chemicals, 02 October 2012.

The density of the test item has been determined to be 1.45 x 103  kg/m3 at 20.0 ± 0.5 °C; relative density of 1.45.