Phosphoric acid, mixed decyl and octyl esters, compds. with diethanolamine

Density

Link to relevant study record(s)

Reference

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

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)

Deviations:

no

Qualifier:

equivalent or similar to guideline

Guideline:

EU Method A.3 (Relative Density)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

air comparison pycnometer (for solids)

Specific details on test material used for the study:

Name: Phosphoric acid, mixed decyl and octyl esters, compds. with diethanolamine
CAS No.: 68425-57-0
Physical state: white solid at 20 °C (turbid, non-pourable paste)
Batch No.: PU61810016
Re-certification date of batch: 16 June 2018
Purity: 100 % (UVCB)
Moisture, % (KF) 1,2
pH, 10% in dW 7,2
Stability: stable under test conditions
Storage condition of test material: Room temperature, protected from light

Key result

Type:

relative density

Density:

1.087 other:

Temp.:

20 °C

Key result

Type:

density

Density:

1.087 g/cm³

Temp.:

20 °C

Results

The density of the test item determined two times with individually prepared samples. Since the relative deviation between two measurements was ≤ 0.5 % the quality criteria of the measurement were fulfilled. The obtained results are shown in the tables below.

Sample 1 mass: 9.5629 g

Sample 2 mass: 11.0908 g

Table: Density of the test item

Sample No.	Determined sample volume [cm3]	Weight test item [g]	Temperature [°C]	Density [g/cm3]	Relative Density [-]
1	8.79197	9.5629	20.0	1.0877	1.0877
2	10.20142	11.0908	20.0	1.0872	1.0872
		mean:	20.0	1.0875	1.0875
		absolute deviation:	0.0	0.0005	0.0005
		relative deviation:	0.0	0.05	0.05

The relative density (D420) of the test item was determined according to EC method A.3 and OECD 109. The mean relative density (D420) of the test item was determined to be 1.0875 relating to the nominal density of water at 4 °C (0.999972 g/cm3).    

Conclusions:

The relative density (D420) of the test item was determined according to EC method A.3 and OECD 109. The mean relative density (D420) of the test item was determined to be 1.0875 relating to the nominal density of water at 4 °C (0.999972 g/cm3).

Executive summary:

The gas comparison pycnometer method is suitable to determine the density of solids. A sample is weighed and placed in a calibrated measurement chamber of known volume. Helium is loaded at a known pressure in a calibrated reference chamber and is then expanded into the sample chamber. Once the pressure is stabilized, experimental data is recorded and the material volume is determined.

The relative density (D420) of the test item was determined according to EC method A.3 and OECD 109. The mean relative density (D420) of the test item was determined to be 1.0875 relating to the nominal density of water at 4 °C (0.999972 g/cm3).    

Description of key information

The relative density (D420) of the test item was determined according to EC method A.3 and OECD 109. The mean relative density (D420) of the test item was determined to be 1.0875 relating to the nominal density of water at 4 °C (0.999972 g/cm3).    

Key value for chemical safety assessment

Relative density at 20C:

1.087