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Physical & Chemical properties

Viscosity

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Reference
Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
key study
Study period:
27 May 2014
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
The study has been conducted according to internationally recognised guideline. No deviation is reported. The substance is adequately caracterised. Therefore full validation applies.
Qualifier:
according to
Guideline:
OECD Test Guideline 114 (Viscosity of Liquids)
Version / remarks:
(2012)
Qualifier:
according to
Guideline:
other: DIN 53015 (2001)
GLP compliance:
yes (incl. certificate)
Remarks:
Landesamt für Umwelt, Wasserwirtschaft und Gewerbeaufsicht (inspected on 29- 30/11/2010, signed on 11/04/2011)
Type of method:
forced ball viscometer (dynamic)
Specific details on test material used for the study:
Storage condition of test material: closed vessel at room temperature in a dry area.
Key result
Temp.:
20°C
Parameter:
dynamic viscosity (in mPa s)
Value:
14.84
Temp.:
40°C
Parameter:
dynamic viscosity (in mPa s)
Value:
6.773

Results of the single determinations with the respective error as well as the mean value and its standard deviation are presented in the following tables:

Results of all Determinations at 20°C

 

Experiment 1

Experiment 2

Mean

Determination

Viscosity in mPa*s

Viscosity in mPa*s

Viscosity in mPa*s

1

14.7949

14.8849

 

2

14.8109

14.8099

 

3

14.8659

14.8739

 

Mean

14.8239

14.8563

14.840

standard dev

0.0373

0.0405

0.023

RSD

0.25%

0.27%

0.15%

 

Results of all Determinations at 40°C

 

Experiment 1

Experiment 2

Mean

Determination

Viscosity in mPa*s

Viscosity in mPa*s

Viscosity in mPa*s

1

6.7578

6.7668

 

2

6.8058

6.7878

 

3

6.7738

6.7478

 

Mean

6.7791

6.7675

6.773

standard dev

0.0244

0.0200

0.008

RSD

0.36%

0.30%

0.12%

 

Detailed findings for duplicate determinations at both temperatures are provided in the experimental report.

Conclusions:
Fluid liquid. Viscosity decreases with temperature. Potential for Aspiration hazard (< 20.5 mm2/s at 40°C).
Executive summary:

The dynamic viscosity of the test substance was measured according to OECD 114/DIN 53015 guideline, rolling ball method.

Two triplicate determinations were performed at each temperature, and the mean result was retained, respectively 14.8 mPa.s at 20°C, and 6.77 mPa.s at 40°C.

Description of key information

Fluid liquid. Viscosity decreases with temperature.

Key value for chemical safety assessment

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

Additional information

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

According to Regulation (EC) No.1272/2008 (CLP) criteria, the derived kinematic viscosity at 40°C is below the threshold value of 20.5 mm2/s, therefore the substance has potential for classification with Aspiration Hazard (to be assessed together with toxicological information).