Registration Dossier

Administrative data

Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Study conducted between 18-Oct and 20- Oct-2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: see 'Remark'
Remarks:
Study conducted in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not affect the quality of the relevant results. The study report was conclusive, done to a valid guideline and the study was conducted under GLP conditions.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010
Report date:
2010

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
EU Method A.3 (Relative Density)
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
air comparison pycnometer (for solids)

Test material

Constituent 1
Reference substance name:
Acid Yellow RN 2903
IUPAC Name:
Acid Yellow RN 2903
Details on test material:
Identification: Acid Yellow RN 2903
Batch Number: Vers. Kilo 6, 26.05.2009
Purity: 65.7 %
Expiry Date: August 01, 2015
Storage Conditions: At room temperature at about 20 °C

Results and discussion

Density
Type:
relative density
Density:
1.588 other:
Temp.:
19.7 °C

Any other information on results incl. tables

The test was performed at a temperature of 19.7 °C ± 0.1 °C.

 

The calibration procedure was performed in triplicate. The individual measurements and the results are presented in Table 1(below).

 

The determination of the relative density of the test item was performed with two independent test item samples each measured in triplicate. The individual measurements are summarized in Table 2 (below).

 

The tabulated values in Table 1 and Table 2 represent rounded results, which were obtained by calculation using the exact raw data.

 

The density of the test item Acid Yellow RN 2903 was determined to be 1.588 g/cm³ at 19.7 °C ± 0.1 °C using a gas comparison pycnometer.

Table 1       Results of the Calibration

Measurement

p1

p2

p3

p4

V ref

V cell

 

[psi]

[psi]

[psi]

[psi]

[cm³]

[cm³]

1

17.696

5.951

18.280

6.857

6.970

13.757

2

17.725

5.960

18.124

6.797

6.975

13.769

3

17.984

6.047

18.430

6.911

6.981

13.780

 Mean:

6.975

13.769

 

 

                  Calibration volume (Vcal):            2.145 cm³

 

                  Gas:                                            Helium

 

 

Table 2       Determination of the Density of Acid Yellow RN 2903

 

Sample

No.

 

Sample

Weight

[g]

Measurement

p1

(sample)

[psi]

p2

(sample)

[psi]

V

(sample)

[cm3]

Density

 

[g/cm3]

1

2.846

1

16.325

6.007

1.787

1.592

2

16.312

6.004

1.793

1.587

3

15.967

5.877

1.793

1.587

2

2.944

1

15.907

5.874

1.854

1.588

2

16.091

5.945

1.864

1.579

3

16.556

6.111

1.846

1.595

Mean:

1.588

Standard deviation ±

0.005

 

See attachment for full calulation details

Calculation of the relative density

 D420 = 1.588 g/cm3/ 0.99997 g/cm3= 1.588

Applicant's summary and conclusion

Conclusions:
The relative density of Acid Yellow RN 2903 was determined to be 1.588 at 19.7 °C.


Executive summary:

The purpose of the study was to determine the relative density of the test item at a specific temperature by means of a gas comparison pycnometer.

 

The density of the test item Acid Yellow RN 2903 was determined to be 1.588 g/cm³ at 19.7 °C ± 0.1 °C using a gas comparison pycnometer.

 

The relative density of Acid Yellow RN 2903 was determined to be 1.588.