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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
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Test Guideline 114 (Viscosity of Liquids)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
rotational viscometer (dynamic)
Key result
Temp.:
20°C
Parameter:
dynamic viscosity (in mPa s)
Value:
600 000
Key result
Temp.:
40°C
Parameter:
dynamic viscosity (in mPa s)
Value:
60 000

The test material was found to be Newtonian in its flow behaviour under the specified test conditions.

Table 1: Determination of viscosity at varied spindle speed at 20 °C

 

Spindle speed

(rpm)

Viscosity

(mPa.s)

 

Sample A

Sample B

1.0

636000

632000

2.0

630000

628000

2.5

625600

625600

3.0

618700

616000

4.0

616000

613000

5.0

600800

600800

6.0

589300

591300

6.0

606000

603300

5.0

608800

606400

4.0

616000

613000

3.0

617300

612000

2.5

625600

622400

2.0

630000

626000

1.0

640000

636000

  

Table 2: Determination of viscosity at varied spindle speed at 40 °C

 

Spindle speed

(rpm)

Viscosity

(mPa.s)

 

Sample A

Sample B

10.0

64000

66400

12.0

64000

66000

20.0

63400

65400

30.0

62800

64530

50.0

60960

62560

50.0

61120

62960

30.0

62670

64270

20.0

63600

65400

12.0

64330

66330

10.0

64400

66400

 

Description of key information

6x10^5 mPa.s at 20°C and 6x10^4 mPa.s at 40°C (OECD 114)

Key value for chemical safety assessment

Viscosity:
600 000 mPa · s (dynamic)
at the temperature of:
20 °C

Additional information