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Viscosity

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Reference
Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
key study
Study period:
07 June 2010 - 18 Aug 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:
OECD Test Guideline 114 (Viscosity of Liquids)
Deviations:
no
Qualifier:
according to
Guideline:
other: DIN EN ISO 12058-1:” Bestimmung der Viskosität mit einem Kugelfallviskosimeter“ as of Dec. 2002
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
forced ball viscometer (dynamic)
Temp.:
20°C
Parameter:
dynamic viscosity (in mPa s)
Value:
0.587
Remarks on result:
other: Standard deviation 0.000 mPa s

Results of all Determinations

 

Experiment 1

Experiment 2

Mean

Determination

Viscosity in mPa*s

Viscosity in mPa*s

Viscosity in mPa*s

1

0.5851

0.5861

 

2

0.5884

0.5907

 

3

0.5873

0.5845

 

Mean

0.5869

0.5871

0.5870

Stand. Dev.

0.0017

0.0032

0.0001

RSD

 

 

0.02%

Conclusions:
The viscosity of the test item reaction mass of 2,2'-oxybisbutane (DSBE), DIPE, SBA and 2-methylpropan-2-ol (TBA) was calculated as 0.587 ±0.000 mPa * s at 20.0 ±0.2 °C which is the mean of two values. Precision of the value is given as standard deviation of determination.
Executive summary:

The viscosity of reaction mass of 2,2'-oxybisbutane (DSBE), DIPE, SBA and 2-methylpropan-2-ol (TBA) was determined according to OECD 114 resp. EN ISO 12058-1 (2002).

Using a falling ball viscosimeter, a viscosity of 0.587 ±0.000 mPa * s  was measured, this value is the mean of three independent determinations (each consisting of three experiments) with their standard deviation. Good correlation of the two determinations was given (relative standard deviation was 0.02%). All measurements were performed at 20.0 ±0.2 °C.

For our reassurance and information purpose the viscosity was determined from the Rheotest Company under not GLP conditions with 0.584 mPa * s (see supporting study).

 

Description of key information

The viscosity of the test item “2-propanol and 2-butanol production, distn. residues” was calculated as 0.587 mPa * s at 20.0 ±0.2 °C which is the mean of two values. Precision of the value is given as standard deviation of determination.

Key value for chemical safety assessment

Viscosity:
0.587 mPa · s (dynamic)
at the temperature of:
20 °C

Additional information

Using a falling ball viscosimeter, a viscosity of 0.587 ±0.000 mPa * s was measured; this value is the mean of three independent determinations (each consisting of three experiments) with their standard deviation. Good correlation of the two determinations was given (relative standard deviation was 0.02%). All measurements were performed at 20.0 ±0.2 °C.

For reassurance and information purpose the viscosity was determined from the Rheotest Company under non-GLP conditions with 0.584 mPa * s at 20.0 °C.