[No public or meaningful name is available]

Appearance / physical state / colour

Administrative data

Endpoint:

appearance / physical state / colour

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: see "Remarks"

Remarks:

The appearance of the test item is described in a reliable study report on the physical-chemical properties of the substance. Since no guideline was followed and no details on the methods are given, the description is considered as reliable with restrictions.

Cross-reference

Reason / purpose for cross-reference:

reference to same study

Reference

Endpoint:

density, other

Remarks:

density in g/cm³

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

test procedure in accordance with generally accepted scientific standards and described in sufficient detail

Reason / purpose for cross-reference:

reference to same study

Qualifier:

no guideline followed

Principles of method if other than guideline:

The test item will become a paste at ambient temperature, so the density cannot directly be determined at ambient temperature using the internal standard procedures (by means of Stabinger viscometer), or by extrapolating the densities obtained at higher temperatures where this raw material is a fluid. Therefore, an alternative method was needed to determine this density.
A procedure similar to the “pour and tap” method was used. The volume of a known weight of the test substance was measured by means of a graduated Babcock bottle. Before testing, the bottle was calibrated with demineralized water at known temperature in order to precisely determine the volume of the bottle (on the basis of water’s density and weight). The whole calibration and measurement procedure is reported in section “Any other information on materials and methods incl. tables”

GLP compliance:

no

Type of method:

other: similar to pour and tap

Key result

Type:

density

Density:

>= 0.926 - <= 0.928 other: relative density is dimensionless.

Temp.:

20 °C

Calibration of the Babcock bottle (< 0 mL)

Weight of bottle plus water up to 0 mL: 157.0072 g

Weight of empty bottle: 57.3462 g

Weight of water: 157.0072 - 57.3462 = 99.6610 g

Measured temperature: 22 °C

Density of water at 22 °C = 0.9977 g/cm³

 

Volume of the Babcock bottle (up to < 0 mL): 99.6610 g / 0.9977 g/cm³ = 99.89 mL

 

 

Calibration Babcock bottle (0 - 10 mL)

Weight of bottle plus water up to 8.1 mL: 165.0803 g

Weight of bottle plus water up to 0 mL: 157.0072 g

Weight of water (0 to 8.1 mL): 8.0703 g

Measured temperature: 22 °C

Density of water at 22 °C = 0.9977 g/cm³

 

Calculated volume 0 (nominal 8.1 mL): 8.0703 g / 0.9977 g/cm3 = 8.09 mL

 

Conclusion: 1 mL on scale ≈ 1 mL

 

 

Determination of the test item density

Measured volume of test item in the Babcock bottle:

Volume at 55 °C: 6.95 mL

Volume at 20 °C: 3.50 - 3.70 mL

 

Weight of bottle plus test item: 153.2447 g

Weight of empty bottle: 57.3462 g

Weight of test item: 95.8985 g

 

Total volume of test item (at 20 °C):

- Min volume = 3.5 mL + 99.89 mL = 103.39 mL

- Max volume = 3.7 mL + 99.89 mL = 103.59 mL

 

Max density (at 20 °C) = 95.8985 g / 103.39 mL = 0.928 g/cm³

Min density (at 20 °C) = 95.8985 g / 103.59 mL = 0.926 g/cm³

 

 

Check of the Babcock bottle by means of Stabinger viscometer

Density at 40 °C of the test item (Stabinger report): 0.9053 g/cm³

Density at 100 °C of the test item (Stabinger report): 0.8677 g/cm³

Density at 55 °C (interpolation of Stabinger curve): 0.8959 g/cm³

Conclusion: Stabinger uses linear relation between temperature and density.

 

Weight of bottle plus test item: 153.2447 g

Weight of empty bottle 57.3462 g

Weight of test item: 95.8985 g

Volume (< 0 mL): 99.89 mL

Volume (0 - 10 mL scale): 6.95 mL (at 55 °C)

Total volume: 106.84 mL

Density at 55 °C = 95.8985 g / 106.84 mL = 0.8976 g/cm³

 

Conclusion: Density interpolation from Stabinger (0.896 g/cm³) ≈ Density alternative method (0.898 g/cm³)

 

 

Calculation of the relative density

The relative density of the substance at 20 °C compared to water at 4 °C was not reported but can be calculated according to “EU Test guideline A.3 for relative density Regulation (EC) No 440/2008” and “ECHA Guidance on Information Requirements and Chemical Safety Assessment, Chapter R.7a: Endpoint specific guidance”.

The density of water at 4 °C (at which temperature, water has its maximum density) is 999.975 kg/m³ (0.999975 g/cm³).

The relative density of the test substance is obtained as follows:

D₄²⁰ = density of test item at 20 °C / density of water at 4 °C

 

Max relative density = 0.928 g/cm³ / 0.999975 g/cm³ = 0.928

Min relative density = 0.926 g/cm³ / 0.999975 g/cm³ = 0.926

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2018

Report date:

2018

Materials and methods

Test guideline

Qualifier:

no guideline followed

Principles of method if other than guideline:

The description of the physical state of the substance was based on a visual inspection of the substance at room temperature and normal pressure.

GLP compliance:

no

Test material

Test material information

Constituent 1

Reference substance name:

Fatty acids, vegetable-oil, polymd., esters with 1,2-hexadecanediol

Cas Number:

68910-99-6

Molecular formula:

Not applicable (i.e., UVCB substance)

IUPAC Name:

Fatty acids, vegetable-oil, polymd., esters with 1,2-hexadecanediol

Results and discussion

Physical state at 20°C and 1013 hPa:

solid

Form / colour / odour

Key result

Form:

other: Paste-like substance

Substance type:

organic