Sodium 2-[[4-(cyclohexylamino)-9,10-dihydro-9,10-dioxo-1-anthryl]amino]-5-ethoxybenzenesulphonate

Density

Link to relevant study record(s)

Reference

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

April 04th, 2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 109 (Density of Liquids and Solids)

Version / remarks:

adopted on 2 October 2012

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7300 (Density / Relative Density / Bulk Density)

GLP compliance:

yes (incl. QA statement)

Type of method:

pycnometer method

Type:

relative density

Density:

1.34

Temp.:

20 °C

DETERMINATION OF DENSITY OF TEST ITEM

Replication Number	Weight of Test Item (g)	Volume of Pycnometer (ml)	Volume of Wetting Solution (ml)	Density of Test Item (g/ml)	SD (±)	RSD (%)
1	29.1307	49.9626	28.1976	1.3384	-	-
2	29.6102	49.9149	27.9042	1.3453	-	-
Mean	29.3704	49.9387	28.0509	1.3418	0.005	0.37

DETERMINATION OF DENSITY OF WETTING SOLUTION

Replication Number	Weight of Empty Pycnometer	Weight of Pycnometer with Wetting Solution	Weight of Wetting Solution	Volume of Pycnometer (ml) at 20 °C	Density of Wetting Solution (g/ml)
1	42.6710	85.6904	43.0194	49.9626	0.8610
2	42.2148	85.5455	43.3307	49.9149	0.8681
Mean	42.4429	85.6179	43.1750	49.9387	0.8645

DETERMINATION OF WATER EQUIVALENT AND VOLUME OF PYCNOMETER AT 20 °C

Replication Number	Weight of Empty Pycnometer	Weight of Pycnometer with Water	Water Equivalent Weight	Volume of the Pycnometer at 20 °C (ml)
1	42.6710	92.5337	49.8627	49.9626
2	42.2148	92.0299	49.8151	49.9149
Mean	42.4429	92.2818	49.8389	49.9388

DETERMINATION OF VOLUME OF WETTING SOLUTION

Replication Number	Weight of Empty Pycnometer (g)	Weight of Pycnometer with Test Item and Wetting Solution (g)	Weight of Pycnometer with Test Item (g)	Weight of Test Item (g)	Volume of Wetting Solution (ml)
1	42.6710	96.0798	71.8017	29.1307	28.1976
2	42.2148	96.0486	71.8250	29.6102	27.9042
Mean	42.4429	96.0642	71.8133	29.3704	28.0509

Conclusions:

Relative density: 1.34 at 20 °C

Executive summary:

The relative density of the test item was determined in accordance with OPPTS 830.7300 and OECD guideline 109.

The empty pycnometer, pycnometer with water, pycnometer with wetting solution, pycnometer with 2/3 of test item and pycnometer with 2/3 of test item and wetting solution were weighed and the weights were recorded to find out the water equivalent and the volume of the pycnometer. The density of the wetting solution, volume of wetting solution and density of the test item were calculated from the water equivalent and the volume of the pycnometer. The test was performed at 20 °C, under thermostatic conditions.

The density values resulted to be 1.3384 g/ml and 1.3453 g/ml for replicates R1 and R2, respectively; the calculated mean density value of the replicates was found to be 1.3419 ± 0.005 g/ml with 0.37 % of RSD.

The relative density resulted to be 1.34.

Conclusion

Relative density: 1.34 at 20 °C

Description of key information

Relative density: 1.34 at 20 °C

Key value for chemical safety assessment

Relative density at 20C:

1.34

Additional information

OECD 109 - Pycnometer method