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Viscosity

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Reference
Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2013-10-01
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Remarks:
The study was conducted in accordance with OECD 114 but not in compliance with relevant quality management system.
Qualifier:
according to guideline
Guideline:
OECD Test Guideline 114 (Viscosity of Liquids)
Version / remarks:
2012
Deviations:
no
Qualifier:
equivalent or similar to guideline
Guideline:
CIPAC MT 192 (Viscosity of liquids by rotational viscometry)
Version / remarks:
CIPAC MT22 (1995)
Deviations:
no
Qualifier:
according to guideline
Guideline:
DIN 51562 Part 1 (Viscometry - Measurement of kinematic viscosity by means of the Ubbelohde viscometer - Part 1: Viscometer specification and measurement procedure)
Version / remarks:
1999
Deviations:
no
GLP compliance:
no
Type of method:
capillary viscometer (static)
Key result
Temp.:
20°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
1.6
Key result
Temp.:
40°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
1.19

 The capillary viscometer 0c was chosen. In the following tables, the flow times and the kinematic viscosities of the test item at temperatures of 20°C and 40°C are reported.

Temperature: 20°C

 

Flow time [s]

Hagenbach correction [s]

Flow time (corr.) [s]

Kinematic viscosity [mm2/s]

1st test series (6 tests)

516.65

-

-

1.60

2nd test series (3 tests)

516.52

-

-

1.60

3rd test series (4 tests)

515.88

-

-

1.60

Mean

516.35

-

-

1.60

Standard deviation

0.410

-

-

0.00127

Relative standard deviation [%]

0.0795

-

-

0.0795

  

Temperature: 40°C

 

Flow time [s]

Hagenbach correction [s]

Flow time (corr.) [s]

Kinematic viscosity [mm2/s]

1st test series (5 tests)

383.91

0.464

383.443

1.19

2nd test series (5 tests)

389.46

0.451

389.012

1.20

3rd test series (5 tests)

386.73

0.458

386.270

1.19

Mean

386.70

-

-

1.19

Standard deviation

2.78

-

-

0.00861

Relative standard deviation [%]

0.719

-

-

0.721

 

The kinematic viscosity of the test item is

Temperature [°C]

Kinematic viscosity [mm2/s]

20

1.60

40

1.19

 

Conclusions:
Viscosity values of 1.6 and 1.2 mm²/s (static) at 20°C and 40°C respectively were obtained for the substance in accordance with relevant test method. The result is considered to be reliable.

Description of key information

Viscosity: 1.6 mm²/s at 20°C (OECD 114)

Key value for chemical safety assessment

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

Additional information

Kinematic viscosity values of 1.6 mm2/s at 20°C and 1.2 mm2/s at 40°C were determined for the substance using a capillary viscometer in accordance with OECD Test Guideline 114 but not in compliance with any known quality system. The result is considered to be reliable.