2-(2-(dimethylamino)ethoxy)-N-(2-(2-(dimethylamino)ethoxy)ethyl)-N-methylethanamine

Density

Link to relevant study record(s)

Reference

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From 2017-09-15 to 2017-09-15

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:

according to guideline

Guideline:

EU Method A.3 (Relative Density)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

pycnometer method

Specific details on test material used for the study:

- Batch n°: DR74271215
- Production release date: 30 November 2015
- Description: clear liquid
- Molecular formula: C13H31N3O2
- Molecular weight: 261.4 g/mol
- Expiry date: 30 December 2018
- Purity (on dry basis): 98.2%, water content: 0.05%

Key result

Type:

relative density

Density:

0.908 other: dimensionless

Temp.:

20 °C

Determining the Density of the Immersion Liquid

Mass of Empty Pycnometer (g)	24.21	Volume of Pycnometer (ml)	25.7
Mass water & Pycnometer (g)	49.84	Density of Water (g/cm³) (ρw,t)	0.998
Mass of IL & Pycnometer (g)	49.01	Mass IL in Pycnometer (g) (m1)	24.80
Calculated Density of IL (g/cm³)	0.965	Density of IL (kg/m³)	965

Equation 1 (Calculation for the density of water)

Mass of water / volume of pycnometer = Density of water

Equation 2 (Calculation for the density of immersion liquid)

ρ_IL = m₁/m_w x ρ_w,t Where : m₁ is the mass of the immersion liquid; m_w is the mass of water; ρ_w,t is the density of water at temperature t

Calculated value for the density of immersion liquid = 965 kg.m^-3 @ 20°C

Determining the Density of the Sample

Run Number	1		2
Mass of Empty Pycnometer (g)	24.21		24.21
Mass of Sample & Pycnometer (g)	47.55		47.52
Mass of Sample added to empty Pycnometer (g) ms	23.34		23.31
Mass of Sample, Pycnometer & immersion liquid	47.55		47.52
Mass of immersion liquid added (g) m2	0.00		0.00
Calculated Density of Sample (g/cm^3)	0.909		0.907
Density of Sample (kg/m^3)	909		907
Mean Result (kg.m^-3)		908

Equation 3 (Calculation for the density of the sample)

ρS,t = m_s ρ_IL/ (m₁ – m₂)

Where: m_s is the mass, in grams, of the sample;

m₁ is the mass, in grams, of immersion liquid required to fill the empty pycnometer;

m₂ is the mass, in grams of immersion liquid added to fill the pycnometer containing the sample;

ρ_IL is the density of the immersion liquid (as determined by equation 2)

Conclusions:

The relative density of the test item was determined to be 0.908. The sample density is 908 kg/m³ at 20°C.

Description of key information

The relative density of the substance was determined using the pycnometer method and was found to be 0.908 at 20°C (density: 908 kg/m³) in a test according to OECD guideline 109 and EU Method A.3 without deviations (K1; Younis, 2017).

Key value for chemical safety assessment

Relative density at 20C:

0.908