Tetraoctylammonium bromide

Density

Link to relevant study record(s)

Reference

Endpoint:

density, other

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Justification for type of information:

Experimental test result performed using standard OECD test guidelines.

Qualifier:

according to guideline

Guideline:

OECD Guideline 109 (Density of Liquids and Solids)

Principles of method if other than guideline:

The density of Tetraoctylammonium bromide (CAS No.14866-33-2 ) was determined following OECD guideline 109 and according to the method
adapted from ASTM D 854-02.

GLP compliance:

not specified

Type of method:

other: Adapted from ASTM D854-02

Specific details on test material used for the study:

- Name of the test material: Tetraoctylammonium bromide
- IUPAC name: Tetraoctylammonium bromide
- Molecular formula: C32H68NBr
- Molecular weight: 546.8002 g/mol
- Smiles: CCCCCCCC[N+](CCCCCCCC)(CCCCCCCC)CCCCCCCC.[Br-]
- Inchi : 1S/C32H68N.BrH/c1-5-9-13-17-21-25-29-33(30-26-22-18-14-10-6-2,31-27-23-19-15-11-7-3)32-28-24-20-16-12-8-4;/h5-32H2,1-4H3;1H/q+1;/p-1
- Substance type: Organic
- Physical form : Solid powder (off white)

Key result

Type:

density

Density:

0.79 g/cm³

Temp.:

20 °C

Remarks on result:

other: Atmospheric pressure 968.1 hPa

TEST ITEM DESCRIPTION AND RESULTS

FOR SOLIDS: Density by Pyknometer:

Method Details		Observations		Remarks if, any
Guideline	OECD 109	1st Reading	2nd Reading
Method	Adapted from ASTM D854-02
Principle of method	The density of test item is determined by using pyknometer. It is the ratio of mass of the unit volume of test item at a stated temperature to mass of the same volume of gas free distilled water at a stated temperature.
Test temperature	(°C)	20.0°C	20.0°C
Density of water at test temperature; g/cm³ (ρtw)		0.9982	0.9982
Atmospheric pressure	( hPa)	968.6	967.6
Weight of empty dry Pyknometer(Wp)		29.421	29.043
Weight of pyknometer filled with water (WA)		78.996	78.781
Weight of pyknometer + test Item (WPS)		39.040	39.313
Weight of pyknometer + test Item + water (WB)		76.302	76.237

*ρat=density of air at 27°C and 760 mm Hg pressure=0.001168 g/cm³

**Density of water referred from the Table 1 of the IS method.

 

CALCULATIONS:

FOR SOLIDS: By Pyknometer:

	Calculated values
	1st calculation	2ndcalculation
Wo=WPS-WP	9.6190	10.2700
(WA-WB)	2.6940	2.5440
Specific Gravity = WO/[WO +(WA-WB)]	0.7812	0.8014
Specific Gravity; Gs	0.7812	0.8014
Density (g/cm³)	0.7797	0.7999
Mean Density (g/cm³)	0.7898

 

Conclusions:

The mean density of Tetraoctylammonium bromide (CAS No. 14866-33-2) was determined to be 0.7898 g/cm³ at 20 °C and 968.1 hPa..

Executive summary:

The density of test item Tetraoctylammonium bromide (CAS No. 14866-33-2) was determined following OECD Guideline 109 and according to the method Adapted from ASTM D854-02 using glass pyknometer. The mean density of test item was determined to be 0.7898 g/cm³ at 20 °C and 968.1 hPa.

Description of key information

The mean density of Tetraoctylammonium bromide (CAS No. 14866-33-2) was determined to be 0.7898 g/cm³ at 20 °C and 968.1 hPa..

Key value for chemical safety assessment

Relative density at 20C:

0.79

Additional information

The density of test item Tetraoctylammonium bromide (CAS No. 14866-33-2) was determined following OECD Guideline 109 and according to the method Adapted from ASTM D854-02 using glass pyknometer. The mean density of test item was determined to be 0.7898 g/cm³ at 20 °C and 968.1 hPa.