2-propanol and 2-butanol production, distn. residues

Density

Link to relevant study record(s)

Reference

Endpoint:

density

Remarks:

density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

15 July 2010

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Fully documented study run under GLP and according to international guidelines.

Qualifier:

according to guideline

Guideline:

EU Method A.3 (Relative Density)

Deviations:

no

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

Key result

Type:

density

Density:

0.751 g/cm³

Temp.:

20 °C

Table 1        Results of Single Determinations

Determination	Density in g/cm^3	Error of Determ. in g/cm^3
1	0.7517	0.0000
2	0.7512	0.0000

 

Table 2        Results – Mean Values

Parameter	Value	Unit	Standard Deviation
Volume of Pycnometer	49.63	cm^3	0.0062
Density of Test Item	0.7515	g/cm^3	0.0004
Density of Test Item (SI-Units)	751.5	kg/m^3	0.4
Relative Density of Test Item	0.7515		0.0004

Conclusions:

The density of the test item reaction mass of 2,2'-oxybisbutane (DSBE), DIPE, SBA and 2-methylpropan-2-ol (TBA) as representative sample for "2-propanol and 2-butanol production, distn. residues" was calculated as 0.7515 ± 0.0004 g/cm3 at 20.0 ±0.2 °C, which is the mean of two values.

Executive summary:

Using the pycnometer method, a density of 0.7515 g/cm3 at 20.0 +/-0.2 °C was measured according to the test guideline OECD 109. This value is the mean of two independent determinations. Standard deviation was 0.0004 g/cm3, showing good correlation of the two determinations. The standard deviation of the two values is a little higher than the maximal error of the single determination, indicating that the error of the determination was a little higher than the calculated value. Correspondence of the values is very good and therefore the study is considered valid.

Description of key information

The density of reaction mass of 2,2'-oxybisbutane (DSBE), DIPE, SBA and 2-methylpropan-2-ol (TBA) as representative sample for "2-propanol and 2-butanol production, distn. residues" was determined according to OECD 109 resp. EU A.3. The relative density at 20 °C was found to be 0.7515.

Key value for chemical safety assessment

Relative density at 20C:

0.751

Additional information

Using the pycnometer method, a density of 0.7515 g/cm3 at 20.0 ±0.2 °C was measured according to the test guideline OECD 109. This value is the mean of two independent determinations. Standard deviation was 0.0004 g/cm3, showing good correlation of the two determinations. The standard deviation of the two values is a little higher than the maximal error of the single determination, indicating that the error of the determination was a little higher than the calculated value. Correspondence of the values is very good and therefore the study is considered valid.