C8-C26 branched and linear hydrocarbons – Distillates

Density

Administrative data

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

March 2005

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Study conducted to GLP and in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not effect the quality of the relevant results.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2006

Report date:

2006

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

EU Method A.3 (Relative Density)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

pycnometer method

Test material

Test material information

Constituent 1

Reference substance name:

-

EC Number:

481-740-5

EC Name:

-

Cas Number:

848301-67-7

Molecular formula:

main general molecular formula: CnH(2n+2)

IUPAC Name:

2,2,3,4,4,5,6-heptamethylheptane; 2,2,8-trimethyltetradecane; 2,2-dimethyldodecane; 2,2-dimethyltetradecane; 2-methyltetradecane; 3,5,7-triethyldecane; 4-ethyldodecane; 4-propyldodecane; 5,5-dipropylnonane; 5,7-dimethyl-4-propylundecane; 5-butyl-5-propyldecane; 5-butyl-5-propylnonane; 5-ethyl-5-propylnonane; 5-ethyl-7-methyl-4-propylundecane; 5-propyltridecane; 6-butyl-6-methyldodecane; 6-butyldodecane; 6-butylundecane; 7-methyl-4-propylundecane; 8-methyl-5-propyltridecane; 9-butyl-6-propylhexadecane; heptadecane; hexacosane; hexadecane; octane; pentadecane; tetradecane

Details on test material:

- Name of test material (as cited in study report): Distillates (Fischer-Tropsch), C8-26 branched and linear
- Substance type: Organic
- Physical state: Clear colorless liquid
- Analytical purity: 100%
- Impurities (identity and concentrations): Information not available
- Composition of test material, percentage of components: Information not available
- Isomers composition: Information not available
- Purity test date: Information not available
- Lot/batch No.: Information not available
- Expiration date of the lot/batch: Information not available
- Stability under test conditions: Stable under normal temperature and pressure
- Storage condition of test material: Room temperature, in the dark

Results and discussion

Density

Type:

relative density

Density:

0.78

Temp.:

20 °C

Any other information on results incl. tables

Calculation

The relative density was calculated using Equation 1 and Equation 2:

Equation 1: Density [kg/m³] = d(c - a)/(b-a)

where:

a = mass of pycnometer (g)

b = mass of pycnometer filled with water (g)

c = mass of pycnometer filled with test material (g)

d = density of water at test temperature (kg/m³)

Equation 2: Relative density =ρ/ρ(H₂O, 4°C)

where:

ρ= density of test material (kg/m³)

ρ(H₂O, 4°C) = density of water at 4°C (999.97 kg/m³)

Results

The results of the duplicate determinations (at 20°C) are shown in the following table:

	Determination
	1	2
Mass of pycnometer (g)	21.2281	21.5164
Mass of pycnometer & distilled water at 20.0°C (g)	46.0423	46.2427
Mass of pycnometer & test material at 20.0°C (g)	40.6132	40.8195
Density of water at 20.0°C (kg/m³)	998.20	998.20
Density (kg/m³)	779.81	779.27
Relative density	0.780	0.779

Mean relative density: 0.780

Temperature: 20.0 ± 0.5°C

Applicant's summary and conclusion

Conclusions:

relative density: 0.780 at 20.0 ± 0.5°C

Executive summary:

The relative density was determined using the pycnometer method, EU Method A.3. The relative density of the test substance at 20.0 ± 0.5°C was 0.780 (arithmetic mean of two determinations).