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Density

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Reference
Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
12-Nov-2015
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Guideline study without GLP
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:
1.009
Temp.:
20 °C

Results

Pycnometer No.

453

462

476

mass pycnometer [g]

37.1048

36.3935

37.1671

mass pycnometer + test item [g]

47.3660

47.5891

48.7255

mass pycnometer + test item + immersion liquid [g]

57.5372

57.7544

58.1027

mass test item [g]

10.2612

11.1956

11.5584

mass immersion liquid, in addition to the sample [g]

10.1712

10.1653

9.3772

mass pycnometer + immersion liquid [g]

54.9823

54.9692

55.2371

mass pycnometer + water (20 °C) [g]

60.6551

60.8692

60.9621

mass immersion liquid [g]

17.8775

18.5757

18.0700

mass water (20 °C) [g]

23.5503

24.4757

23.7950

ρ (immersion liquid) [g/cm³]

0.7582

0.7580

0.7584

ρ (test item) [g/cm³]

1.0091

1.0086

1.0081

Relative Density D420

1.0091

1.0086

1.0081

 

Average relative density D420: 1.0086 ± 0.0013

In order to check if the test substance dissolved in the immersion fluid, the density of the immersion fluid was checked before and after the determination with an oscillating densitometer. No significant change was observed, hence no dissolution of the test item occurred.

Description of key information

Relative density: 1.0086 at 20 °C (OECD 109, pycnometer method)

Key value for chemical safety assessment

Relative density at 20C:
1.009

Additional information

The relative density of the test substance 2,2-bis(hydroxymethyl)propane-1,3-diyl didocosanoate (CAS: 68258-72-0) was determined according to OECD guideline 109.