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Diss Factsheets

Physical & Chemical properties

Density

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Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2010-05-03
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods with acceptable restrictions
Remarks:
Test procedure in accordance with national standard methods (DIN) without GLP.
Qualifier:
according to guideline
Guideline:
other: DIN EN ISO 1183-1
Deviations:
no
GLP compliance:
no
Type of method:
buoyancy method
Key result
Type:
relative density
Density:
0.91
Temp.:
20 °C

Repeat determination details: Test 1 / Test 2 / Test 3

Calibration

Date: 26.04.2010

Operator: J. Wolter

weight 1g: 1.0000g

weight 100g: 100.0000g

Water density at 20°C (theory): 0.9982g/ml

Measurement

(triple determination)

temperature in °C: 20 / 20 / 20

Weight of solid in air in g: 2.1578 / 2.4884 / 2.4666

Weight of solid in liquid in g: 1.9265 / 2.266 / 2.2256

relative density: 0.902 / 0.917 / 0.910

Conclusions:
A relative density value of 0.91 at 20°C was determined for the substance using a relevant test method. The result is considered to be reliable.
Executive summary:

Octadecan-1-ol was determined according DIN EN ISO 1183 -1. The relative density was determined to be 0.910 at 20 °C.

Endpoint:
relative density
Type of information:
other: Data obtained from a handbook
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Principles of method if other than guideline:
No details are available on the guideline used to determine this result.
GLP compliance:
not specified
Type:
relative density
Density:
0.812
Temp.:
59 °C
Conclusions:
A relative density value of 0.8124 (59ºC) was reported in a handbook of reliable data which has been subject to peer-review and in which the original data sources are traceable. The result is considered to be reliable.

Description of key information

The relative density of octadecan-1-ol is 0.91 at 20°C

Key value for chemical safety assessment

Relative density at 20C:
0.91

Additional information

A relative density value of 0.91 at at 20°C was determined for the substance using a relevant test method in accordance with DIN EN ISO 1183-1. The result is considered to be reliable and is selected as key study.

It is supported by a value of 0.81 at significantly elevated temperature (59°C), taken from a reliable handbook.

Discussion of trends in the Category of C6-24 linear and essentially-linear aliphatic alcohols:

No relevant trends; the relative density values across the category are consistently similar, within the range 0.80 - 0.90 at ambient temperature.