Reaction mass of sodium 3-[[4-[(4-ethoxy-m-tolyl)azo]-1-naphthyl]azo]benzenesulphonate and sodium 3-[[4-[(4-ethoxyphenyl)azo]-1-naphthyl]azo]benzenesulphonate

Density

Link to relevant study record(s)

Reference

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

January 11, 2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

test procedure in accordance with generally accepted scientific standards and described in sufficient detail

Qualifier:

according to guideline

Guideline:

OECD Guideline 109 (Density of Liquids and Solids)

Version / remarks:

2012

GLP compliance:

yes (incl. QA statement)

Type of method:

air comparison pycnometer (for solids)

Type:

relative density

Density:

1.426

Temp.:

20 °C

Test No.	Temperature [°C]	Amount of test item [g]	Average sample volume [cm³]	Density [g/cm³]
1	20	9.87	6.91075	1.42821
2	20	10.03	7.04847	1.42300

* The pressurizing-expansion cycles are performed until 5 subsequent volume measurements have a relative standard deviation (RSD) of ≤ 0.2 %

Conclusions:

1.426 at 20 °C

Executive summary:

The relative density of the substance was investigated according to the OECD guideline 109, by pycnometer method.

The density is measured at a temperature of 20 ± 0.01 °C using the gas comparison pycnometer.

The mean density of the test item at 20 °C resulted to be 1.425605 g/cm³. The relative density D₄²⁰ is calculated by dividing the density of the test item by the density of water at 4 °C (0.9999750 g/cm³); the relative density iresulted to be 1.426.

Conclusion

1.426 at 20 °C

Description of key information

Relative density: 1.426 at 20 °C

Key value for chemical safety assessment

Relative density at 20C:

1.426

Additional information

OECD 109 - air comparison pycnometer method