Reaction mass of (3aR,5aS,9aS,9bR)-3a,6,6,9a-Tetramethyldodecahydronaphtho[2,1-b]furan and (3aS,5aR,9aR,9bS)-3a,6,6,9a-Tetramethyldodecahydronaphtho[2,1-b]furan

Density

Link to relevant study record(s)

Reference

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From 2008-07-03 to 2008-10-17

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Remarks:

The study was conducted according to an internationally recognised method, and under GLP. No deviation affected the good quality of the study. The substance is considered to be adequately characterised with its purity. Therefore full validation applies.

Qualifier:

according to guideline

Guideline:

OECD Guideline 109 (Density of Liquids and Solids)

Qualifier:

according to guideline

Guideline:

EU Method A.3 (Relative Density)

GLP compliance:

yes (incl. QA statement)

Remarks:

Inspected on 05th to 06th and 26th to 30th November 2007 / Decision 30 April 2008 / Signed on 12th November 2008

Type of method:

air comparison pycnometer (for solids)

Type:

density

Density:

1.081 g/cm³

Temp.:

20.2 °C

Key result

Type:

relative density

Density:

1.081 other: relative density has no dimension

Temp.:

20 °C

All manipulations were performed at 20.2°C +/- 0.1°C.

Results of the calibration

Calibration volume (Vcal) = 2.183 cm3

Measurement	p1 [psi]	p2 [psi]	p3 [psi]	p4 [psi]	Vref [cm3]	Vcell [cm3]
1	17.850	5.993	18.114	6.780	6.992	13.833
2	18.328	6.156	17.820	6.671	7.010	13.860
3	17.451	5.861	18.575	6.953	7.011	13.863
Mean:					7.004	13.852

Determination of the density of test item

Sample No.	Sample weight [g]	Measurement	p1(sample) [psi]	p2(sample) [psi]	V(sample) [cm3]	Density [g/cm3]
1	1.626	1	15.404	5.574	1.500	1.084
		2	15.118	5.472	1.505	1.080
		3	16.218	5.870	1.505	1.080
2	1.622	1	16.173	5.853	1.503	1.079
		2	16.149	5.844	1.502	1.080
		3	16.221	5.870	1.501	1.080
Mean:						1.081
Standard deviation +/- [g/cm3]						0.002

Conclusions:

The substance is slightly more dense than water.

Executive summary:

The density of the test substance was measured under GLP according OECD 109 / EU A3 guideline, gas comparison pycnometer method.

After triplicate calibration, two independant samples were measured in triplicate, and the mean density at 20.2°C was calculated to be 1.081 g/cm3. This results was then converted to relative density towards water at 4°C.

Description of key information

The substance is slightly more dense than water.

Key value for chemical safety assessment

Relative density at 20C:

1.081

Additional information

A fully reliable study, conducted according to a recognized OECD/EU method and under GLP, is available. It is considered as a key study. The result is retained as key data for purpose of CSA.