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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:
2009
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Test Guideline 114 (Viscosity of Liquids)
Version / remarks:
1995
Deviations:
no
GLP compliance:
no
Other quality assurance:
ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
Type of method:
capillary viscometer (static)
Key result
Temp.:
20°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
ca. 78.17

Temperature of measuring: 20 °C

Calibration constant of the viscometer: 0.9660 mm2.s-2

 

No.

Viscosity

Unit

1

78.00

mm2.s-1

2

78.20

mm2.s-1

3

78.30

mm2.s-1

Standard deviation: 0.15 mm2.s-1

Average kinematic viscosity: 78.17 ± 0.15 mm2.s-1at 20 °C
Conclusions:
Average kinematic viscosity: 78.17 ± 0.15 mm2.s-1 at 20 °C

Description of key information

Average kinematic viscosity: 78.17 ± 0.15 mm2.s-1 at 20 °C (DEZA, 2009)

The same measured value for dynamic viscosity at 20°C was cited in 3 references without details on test procedure. As one of it (Hawley's dictionnary, 1981) is considered as a reliable document according to R7 guidance document, we consider this value as key parameter.

Key value for chemical safety assessment

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

Additional information

Dynamic viscosity of DEHP is recorded at 58 mPa.s at 25°C (Rippen 2000). We assume this reference as a reliable document and this data is therefore used a supportive value.