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Density

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Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2020-04-06
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.3 (Relative Density)
Version / remarks:
May 2008
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Version / remarks:
October 2012
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
pycnometer method
Key result
Type:
relative density
Density:
0.955
Temp.:
20 °C

The pycnometer volume was determined using ultrapure water at 20 °C.

Measured data

Empty pycnometer, g

Pycnometer with water, g

1

31.68323

56.31501

2

31.68247

56.31450

3

31.68234

56.31408

4

31.68187

56.31461

5

31.68186

56.31477

Density of water at 20 °C, g/cm3:

0.9983

-

Volume of pycnometer, cm3:

24.6742

-

The density of 2-(allyloxy)ethanol was determined from five replicates at 20 °C with the above determined volume of the pycnometer (24.6742 cm3).

Empty pycnometer, g

Pycnometer with test item, g

Test item in the pycnometer, g

Density of the test item, g/cm3

31.69488

55.25032

23.55544

0.9547

31.69451

55.23880

23.54429

0.9542

31.69387

55.27014

23.57627

0.9555

31.69341

55.27307

23.57966

0.9556

31.69363

55.27411

23.58048

0.9557

 

 

Mean:

0.9551

 

 

Confidence int. (95 %):

0.00083

 

 

RSD (CV %):

0.070

Conclusions:
The relative density of the test item at 20 °C (compared to water at 4 °C) was determined to be 0.9551.
Executive summary:

A study was conducted according to Regulation (EU) No. 440/2008, Method A.3 and OECD Guideline No. 109 (2012) to determine the relative density of the test item. The density was determined by the pycnometer method.The weight of the test item is the difference between the weight of the empty and the levelled pycnometer. The exact volume of the pycnometer is known by measured ultrapure water according to the calibration procedure. The density was determined in five replicates.The relative density of the test item at 20 °C (compared to water at 4 °C) was determined to be 0.9551.

Endpoint:
density, other
Type of information:
(Q)SAR
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification
Justification for type of information:
Please refer to the QMRF and QPRF files provided under the section attached justification.
Qualifier:
according to guideline
Guideline:
other: REACH guidance on QSARS R.6
Deviations:
no
Principles of method if other than guideline:
Estimation of density using T.E.S.T
GLP compliance:
no
Type of method:
other: calculation
Specific details on test material used for the study:
SMILES : O(CCO)CC=C
Key result
Type:
density
Density:
0.94 g/cm³
Remarks on result:
other: QSAR predicted value: The substance is within the applicability domain of the model.
Conclusions:
Using T.E.S.T. v4.2.1 the density of the test item was estimated to be 0.94 g/cm3. The substance is within the applicability domain of the model.
Executive summary:

The density was estimated using Toxicity Estimation Software Tool (T.E.S.T.) v4.2.1 from US Environmental Protection Agency. Using T.E.S.T. v4.2.1 the density of the test item was estimated to be 0.94 g/cm3. The adequacy of a prediction depends on the following conditions:

a) the (Q)SAR model is scientifically valid: the scientific validity is established according to the OECD principles for (Q)SAR validation;

b) the (Q)SAR model is applicable to the query chemical: a (Q)SAR is applicable if the query chemical falls within the defined applicability domain of the model;

c) the (Q)SAR result is reliable: a valid (Q)SAR that is applied to a chemical falling within its applicability domain provides a reliable result;

d) the (Q)SAR model is relevant for the regulatory purpose.

For assessment and justification of these 4 requirements the QMRF and QPRF files were developed and attached to this study record.

Description of the prediction Model

The prediction model was descripted using the harmonised template for summarising and reporting key information on (Q)SAR models. For more details please refer to the attached QSAR Model Reporting Format (QMRF) file.

Assessment of estimation domain

The assessment of the estimation domain was documented in the QSAR Prediction Reporting Format file (QPRF). Please refer to the attached document for the details of the prediction and the assessment of the estimation domain.

Description of key information

The relative density of the test item at 20 °C (compared to water at 4 °C) was determined to be 0.9551.

Key value for chemical safety assessment

Relative density at 20C:
0.955

Additional information

A study was conducted according to Regulation (EU) No. 440/2008, Method A.3 and OECD Guideline No. 109 (2012) to determine the relative density of the test item. The density was determined by the pycnometer method.The weight of the test item is the difference between the weight of the empty and the levelled pycnometer. The exact volume of the pycnometer is known by measured ultrapure water according to the calibration procedure. The density was determined in five replicates.The relative density of the test item at 20 °C (compared to water at 4 °C) was determined to be 0.9551.