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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Experimental phase started 16th June 2016 and completed on the 15th January 2017.
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017
Report date:
2017

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
pycnometer method

Test material

Constituent 1
Chemical structure
Reference substance name:
Ethylidynetrimethanol
EC Number:
201-063-9
EC Name:
Ethylidynetrimethanol
Cas Number:
77-85-0
Molecular formula:
C5H12O3
IUPAC Name:
2-(hydroxymethyl)-2-methylpropane-1,3-diol
Test material form:
solid: granular

Results and discussion

Density
Key result
Type:
relative density
Density:
ca. 1 220 kg/m³
Temp.:
20.3 °C

Any other information on results incl. tables

Results

Calibration

The pressure readings and the calculated volume for the reference and sample cells are shown in the following table:

Table 6

Determination

P1
(psig)

P2
(psig)

P3
(psig)

P4
(psig)

Reference cell volume (cm3)

Sample cell volume (cm3)

1

17.313

6.557

17.367

8.610

90.740

148.848

2

17.049

6.459

16.951

8.403

90.885

149.012

3

17.150

6.501

17.278

8.564

91.145

149.300

Mean reference cell volume :          90.953 cm3
Mean sample cell volume     :          149.225 cm3

As the reference cell volume and sample cell volume were within the defined tolerance (90.953 ± 1.0 cm3and 149.225 ± 1.0 cm3for the reference and sample cell volumes respectively) the gas comparison pycnometer was therefore considered acceptable for u

 Sample

The pressure readings, calculated volumes and density values obtained for the test item are shown in the following table:

Table 7

Determination

Test

P1(sample)
(psig)

P2(sample)

(psig)

Volume (cm3)

Density

(kg/m3)

Mean density (kg/m3)

1

A

17.120

7.615

35.564

1.222 x 103

1.22 x 103

B

17.050

7.581

35.487

1.225 x 103

C

17.073

7.589

35.427

1.227 x 103

2

A

17.113

7.557

34.079

1.221 x 103

1.22 x 103

B

17.112

7.555

34.037

1.222 x 103

C

17.049

7.523

33.922

1.226 x 103

Mean density             :          1.22 x 103 kg/m3
Relative density         :          1.22
Temperature              :          20.3 ± 0.5 °C

 Discussion

Duplicate determinations were performed to ensure a reproducibility of less than ± 20 kg/m3was obtained.

Applicant's summary and conclusion

Conclusions:
The density of the test item has been determined to be 1.22 x 103 kg/m3 at 20.3 ± 0.5 °C (relative density: 1.22).