Registration Dossier
Registration Dossier
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EC number: 906-256-8 | CAS number: -
Viscosity
Administrative data
Link to relevant study record(s)
Description of key information
Viscosities of the three constituents are: 16.1 (@20C), 30, 47.8 (@25C) respectively.
Key value for chemical safety assessment
- Viscosity:
- 23 mPa · s (dynamic)
- at the temperature of:
- 20 °C
Additional information
The viscosity of a blended liquid can be calculated by
calculation of the Viscosity Blending Index (VBI) of
each component of the blend using the Refutas
equation: VBI = 14.534 × ln[ln(v + 0.8)] + 10.975, and
then summing up the fractional contributions of each
component to provide an overall VBI for the mixture. v
is viscosity in centistokes (v=viscosity in
centistokes which is equal to viscosity in
mPas/density in g/cm3). The viscosity is then back
calculated from the composite VBI using the inverse of
the Refutas equation: v =
e^(e^(VBI-10.975)/14.534))-0.8. For the mixture
composition extremes, including water, this gives a
viscosity range for the substance of 7 -28cStk.
Because viscosities of the components are not all
available at the same temperature, this can only be
considered an approximation. A value of 20centistokes
is taken as the key parameter (as a mid point value),
which is equivalent to around 23mPas (at a density of
1.12).
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