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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:
15 October 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
Test method according to OECD Guideline 114. GLP study.
Qualifier:
according to guideline
Guideline:
OECD Test Guideline 114 (Viscosity of Liquids)
Deviations:
no
Qualifier:
according to guideline
Guideline:
ISO 3104 (Petroleum products - Transparent and opaque liquids - Determination of kinematic viscosity and calculation of dynamic viscosity)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
capillary viscometer (static)
Key result
Temp.:
20°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
68.8
Key result
Temp.:
40°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
27.4

Table 1: The results of viscosity determination

Test No.

Test
temperature

Flow time t

The difference of
flow time of two
consecutive
measurements

Viscosity ν

The difference
between any and
average viscosity t

[ºC]

[ s ]

[ % ]

[mm2/s]

[ % ]

1.

20

640.05

0.10

68.7414

0.05

2.

20

640.67

68.8080

0.05

 

 

 

Average

68.7747

-

1.

40

255.35

0.05

27.4246

0.03

2.

40

255.22

27.4146

0.03

 

 

 

Average

27.4176

-

Conclusions:
The determined average kinematic viscosity of the tested material is 68.8 mm2/s at 20ºC and 27.4 mm2/s at 40ºC.

Executive summary:

The determination of viscosity of test item was performed according to OECD Guideline 114 and ISO 3014, using Ubbelohde capillary viscometer to measure the kinematic viscosity. The experiment was conducted in two replications at 20ºC and 40ºC. The determined average kinematic viscosity of the test item was 68.8 mm2/s at 20ºC and 27.4 mm2/s at 40ºC.

Description of key information

Key study: OECD Guideline 114. GLP study: The determined average kinematic viscosity of the tested material is 68.8 mm2/s at 20ºC and 27.4 mm2/s at 40ºC.

Key value for chemical safety assessment

Viscosity:
68.8 mm²/s (static)
at the temperature of:
20 °C

Additional information

Key study: The determination of viscosity of test item was performed according to OECD Guideline 114 and ISO 3014, using Ubbelohde capillary viscometer to measure the kinematic viscosity. The experiment was conducted in two replications at 20ºC and 40ºC. The determined average kinematic viscosity of the test item was 68.8 mm2/s at 20ºC and 27.4 mm2/s at 40ºC.