Trichloro(N,N-dimethyloctylamine)boron

Density

Link to relevant study record(s)

Reference

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Testing was conducted between 14th July 2014 and 14th October 2014.

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: GLP guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.3 (Relative Density)

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 109 (Density of Liquids and Solids)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

pycnometer method

Type:

relative density

Density:

1.148

Temp.:

20 °C

Results

Calibration:

The pressure readings and the calculated volume for the reference and sample cells are shown in the following table:

 

Determination	P1 (psi)	P2 (psi)	P3 (psi)	P4 (psi)	Reference Cell Volume (cm^3)	Sample Cell Volume (cm^3)
1	17.216	6.511	17.246	8.537	90.640	149.026
2	17.101	6.472	17.206	8.521	90.776	149.082
3	17.296	6.548	17.245	8.542	90.848	149.119

 

Mean reference cell volume:              90.755 cm³
Mean sample cell volume:                  149.076 cm³

As the reference cell volume and sample cell volume were within the defined tolerance (90.953 ± 1.0 cm³and 149.225 ± 1.0 cm³, respectively) the gas comparison pycnometer was therefore considered acceptable for use.

 

Sample:

The pressure readings and volumes obtained for the vessel and the vessel containing test item are shown in the following table:

 

Determination	Test	Vessel			Vessel and Test Item
		P1(sample) (psig)	P2(sample) (psig)	Volume (cm^3)	P3(sample) (psig)	P4(sample) (psig)	Volume (cm^3)
1	A	17.303	6.959	14.176	17.134	7.786	40.114
	B	17.280	6.951	14.216	17.161	7.799	40.133
	C	17.139	6.894	14.207	17.141	7.790	40.135
2	A	17.134	6.902	14.534	17.213	7.849	40.804
	B	17.221	6.938	14.565	17.183	7.838	40.872
	C	17.226	6.937	14.468	17.202	7.844	40.804

 

The calculated mean volumes and calculated densities are shown in the following table:

 

Determination	Mean Volume of Vessel (cm^3)	Mean Volume of Vessel and Test Item (cm^3)	Volume of Test Item (cm^3)	Density (kg/m^3)
1	14.200	40.127	25.928	1.1480 x 10^3
2	14.522	40.827	26.304	1.1489 x 10^3

 

Mean density:           1.148 x 10³kg/m³

Relative density:        1.148

Temperature:            20.0 ± 0.5 ºC

 

Discussion:

The test item had to be melted to aid sampling. The Sponsor had specified that the test item could be heated to a maximum of 80 °C.

Two determinations were performed to ensure a reproducibility of less than ± 20 kg/m³was obtained.

 

Conclusions:

Under the study conditions, the density of the test substance was determined to be 1.148 x 103 kg/m3 at 20.0 ± 0.5 ºC. The corresponding relative density calculated to be 1.148.

Executive summary:

A study was conducted to determine the density of the test substance, trichloro(N,N-dimethyloctylamine)boron according to OECD Guideline 109 and EU method A.3 in compliance with GLP (pycnometer method). Glass vessel was placed in the sample cell, weighed and placed into the pycnometer. Triplicate pressure readings (P1(sample) and P2(sample)) were taken after pressurizing the reference cell of known volume (Vref) and then switching to the sample cell (Vcell). These readings were used to calculate the volume of the glass vessel. The ambient temperature was recorded. Under the study conditions, the density of the test substance was determined to be 1.148 x 103 kg/m³ at 20.0 ± 0.5 ºC. The corresponding relative density calculated to be 1.148 (Harlan, 2014).

 

Description of key information

The density was determined according to OECD Guideline 109 and EU method A.3 (Harlan, 2014).

Key value for chemical safety assessment

Relative density at 20C:

1.148