Trihexylamine

Density

Administrative data

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From 22-12-2017 to 25-07-2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2018

Report date:

2018

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 109 (Density of Liquids and Solids)

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method A.3 (Relative Density)

Deviations:

no

Test guideline 3

Qualifier:

according to guideline

Guideline:

other: ISO 3507. (1999). Laboratory glassware – Pyknometers

Deviations:

no

Test guideline 4

Qualifier:

according to guideline

Guideline:

other: NF T 20-053. (1985). Produits chimiques à usage industriel – Détermination de la masse volumique des solides en poudre et des liquides – Méthode pycnométrique

Deviations:

no

Test guideline 5

Qualifier:

according to guideline

Guideline:

other: ISO 758. (1976). Liquid chemical products for industrial use - Determination of density at 20 degrees C

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

pycnometer method

Test material

Test material information

Constituent 1

Reference substance name:

Trihexylamine

EC Number:

203-062-9

EC Name:

Trihexylamine

Cas Number:

102-86-3

Molecular formula:

C18H39N

IUPAC Name:

trihexylamine

Dynamic viscosity of test material:

Below 500 Pa.s

Results and discussion

Density

Density 1

Key result

Type:

density

Density:

797.7 kg/m³

Temp.:

20 °C

Density 2

Key result

Type:

relative density

Density:

0.798 other:

Temp.:

20 °C

Any other information on results incl. tables

Density of Tri-n-hexylamine:

Results of the two determinations are reported in the following table:

Measurement	Determination
	1	2
Temperature (°C)	20.0	20.0
Mass of the empty pycnometer (g)	31.43742	31.43742
Mass of the pycnometer filled with ultrapure water (g)	81.48080	81.48080
Mass of the pycnometer filled with the test item (g)	71.41375	71.41681
Density of the test item (kg/m^3)	797.6	797.7
Mean Density (kg/m^3)	797.7

 

The two determinations are within the validity criteria of the method: (less than 1% of difference).

No additional determination was performed.

Applicant's summary and conclusion

Conclusions:

The density of the test item Tri-n-hexylamine has been determined to be 797.7 kg/m3 at 20.0 +/- 0.1°C (mean of two determinations).
The relative density of the test item was determined to be D20/4 = 0.798.

Executive summary:

A study was performed to determine the density of the test item Tri-n-hexylamine. The method followed was designed to be compliant with the OECD Guideline for Testing of Chemicals No. 109, "Density of Liquids and Solids"(2012) and the Method A.3 of Commission Regulation No. 440/2008, “RelativeDensity”. The test was performed under GLP. In this method, the density is determined at a specific

temperature using a pycnometer. Density is calculated from the difference in weight between the full and the empty pycnometer and its volume. The pycnometer volume is determined by carrying out the experiment at the selected temperature with the quantity of ultrapure water required to fill the pycnometer. Two trials were conducted. The following results were obtained:

Trial       Density (kg/m3) at 20.0 +/- 0.1°C

1            797.6

2            797.7

Mean      797.7

These values respect validity criteria (less than 1% of difference). Moreover, the bath used to maintain the pycnometer at 20°C did not vary by more than 0.1°C.

The density of the test item was determined to be 797.7 kg/m3 at 20.0 +/- 0.1°C (mean value of two independent determinations).

The relative density of the test item was determined to be D20/4 = 0.798