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Viscosity

Link to relevant study record(s)

Reference

Endpoint:

viscosity

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: guideline study without detailed documentation

Qualifier:

according to guideline

Guideline:

ASTM D-445 (Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)

Deviations:

not specified

GLP compliance:

no

Type of method:

capillary viscometer (static)

Key result

Temp.:

40°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

12.1

Temp.:

other: 100.0°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

3.1

Conclusions:

- 12.1 mm2/s at 40°C
- 3.1 mm2/s at 100°C

Executive summary:

The kinematic viscosity of the test material 'Paraffin waxes (Fischer-Tropsch), full range, C15-50 – branched and linear' has been determined at 40ºC and 100ºC using Method ASTM D445.

The results are shown in the following table:

Temperature (ºC)	Viscosity (mm^2/s)
40	12.1
100	3.1

Description of key information

kinematic viscosity at 40ºC and 100ºC (determined using Method ASTM D445):

- 12.1 mm2/s at 40°C  

- 3.1 mm2/s at 100°C

Key value for chemical safety assessment

Viscosity:

12.1 mm²/s (static)

at the temperature of:

40 °C

Additional information

The substance 'Paraffin Waxes (Fischer-Tropsch), full range, C15-50 - branched and linear' is a mixture of hydrocarbons (UVCB substance) with a wide range of viscosities: the reported viscosity of 12.1 mm²/s at 40°C and 3.1 mm²/s at 40°C derives from the latest batch, however, it is intended to adjust final viscosity towards slightly higher viscosities. In general terms, higher viscosity grade products contain relatively higher proportions of higher carbon number constituents.