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EC number: 219-909-0 | CAS number: 2568-90-3
Viscosity
Administrative data
Link to relevant study record(s)
Description of key information
Butylal viscosity was measured in two experiments:
Dynamic viscosity was measured from 10 to 130°C in Palczewka-Tulinska & Szafranski (2000) experiment. Dynamic viscosity of 1.056 mPa · s at 20°C was calculated from equation developped with experimental data.
Static viscosity was measured in Durieux (1995) experiment as 1.083 E-6 m2/s at 25°C.
Key value for chemical safety assessment
- Viscosity:
- 1.056 mPa · s (dynamic)
- at the temperature of:
- 20 °C
Additional information
In Palczewka-Tulinska & Szafranski (2000) experiment, Dynamic Viscosity (DV) was measured at temperature (T) from 10 to 130°C. Whereas not measured at 20 or 25°C, DV was derived from the following equation established with experimental data:
log DV = -1.85894 + (541.0837/(T-5.7569)) with DV in mPa · s and T in °C.
DV at 20°C: 1.056 mPa · s
DV at 25°C: 0.981 mPa · s
Static Viscosity (SV) was calculated from DV using butylal density (measured in the same study and presented under "Density" point).
SV at 20°C: 1.264 E-6 m2/s
SV at 25°C: 1.180 E-6 m2/s
In Durieux (1995) experiment, SV was measured at 25°C as 1.083 E-6 m2/s
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