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

Viscosity

Link to relevant study record(s)

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

Guideline:

OECD Test Guideline 114 (Viscosity of Liquids)

Deviations:

no

Qualifier:

according to guideline

Guideline:

other: DIN EN ISO 12058-1:” Bestimmung der Viskosität mit einem Kugelfallviskosimeter“ as of Dec. 2002

Deviations:

no

GLP compliance:

yes (incl. QA statement)

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.