Cuprate(2-), [μ-[[3,3'-[methylenebis[(4,6-dihydroxy-3,1-phenylene)azo]]bis[4-hydroxy-5-nitrobenzenesulfonato]](6-)]]di-, sodium

Density

Link to relevant study record(s)

Reference

Endpoint:

density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

August 28, 2014

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)

GLP compliance:

no

Type of method:

pycnometer method

Type:

relative density

Density:

ca. 1.798 other: dimensionless value

Temp.:

20 °C

Calculations:

Absolute density of a substance (δ) is calculated as: δ_subs= WS / V_subs= WS / (V_pyc– V_hex) = WS / (V_pyc– WH₂/δ_Hex) = WS / (V_pyc– WH₂* V_pyc/ WH₁)

 Relative density (δ²⁰₄) is calculated as: δ_subs/ 0.999973

	1^sttest		2^ndtest		Mean
WP1	42.1351	g	41.5429	g
WHP	75.0486	g	75.4690	g
WH1	32.9135	g	32.9261	g
δHex	0.658	g/cm^3	0.658	g/cm^3	0.658	g/cm^3
Vol Pic	50.00	cm^3	50.00	cm^3
WP2	42.1351	g	41.5429	g
WSP	47.7209	g	47.1709	g
WS	5.5858	g	5.6280	g
WSH	36.4447	g	36.4652	g
WH2	30.8589	g	30.8372	g
Vhex	46.8980	cm^3	46.8650	cm^3
Vsubs	3.1020	cm^3	3.1350	cm^3
δsubs	1.801	g/cm^3	1.795	g/cm^3	1.798	g/cm^3
Relative density (δ ^204)					1.798
Standard deviation					0.0039
Relative standard deviation					0.22

 

Conclusions:

The relative density of the test substance is 1.798 at 20 °C

Executive summary:

Relative density was determined by means of a pycnometer as per recommendations of OECD 109. Density was calculated from the difference in weight between the full and empty pycnometer and its volume.

Relative density of the substance is 1.798 at 20 °C

Description of key information

Relative density = 1.798 at 20 °C

Key value for chemical safety assessment

Relative density at 20C:

1.798

Additional information

Relative density of the substance is 1.798 at 20 °C as determined by the pycnometer method