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Viscosity

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Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Secondary source
Qualifier:
according to guideline
Guideline:
other: not reported
Principles of method if other than guideline:
No methodological details are reported
GLP compliance:
not specified
Remarks:
: secondary source
Type of method:
other: no details
Temp.:
20°C
Parameter:
other: cps
Value:
6.5

The viscosity of 23% aqeuous solution of hexafluorosilicic acid is reported to be 6.5 cps at 20 degrees Celsius.

Conclusions:
The viscosity of 23% aqeuous solution of hexafluorosilicic acid is reported to be 6.5 cps at 20 degrees Celsius.
Executive summary:

The viscosity of 23% aqeuous solution of hexafluorosilicic acid is reported to be63.5 cps at 20 degrees Celsius.

Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Modern proprietary study
Qualifier:
no guideline followed
Principles of method if other than guideline:
The analytical procedure was carried out using a Bohlin CS50 Rheometer equipped with external temperature control.
GLP compliance:
no
Type of method:
rotational viscometer (dynamic)
Temp.:
other: 24.1°C
Parameter:
dynamic viscosity (in mPa s)
Value:
11

The sample exhibited pseudoplastic (shear thinning) behaviour with a decrease in viscosity observed on the return curve. The viscosity at 10 Pa was found to be 0.011Pas or 11cps.

Conclusions:
The viscosity at 10 Pa was found to be 0.011Pas or 11cps.
Executive summary:

The viscosity of a 10% aqeuous solution of hexafluorsilicic acid at 10 Pa was found to be 0.011Pas or 11cps.

Description of key information

The viscosity of a 10% aqeuous solution of hexafluorsilicic acid at 10 Pa was found to be 0.011Pas or 11cps. The viscosity of 23% aqueous solution of hexafluorosilicic acid is reported to be 6.5 cps at 20 degrees Celsius.

Key value for chemical safety assessment

Viscosity:
6.5 mPa · s (dynamic)
at the temperature of:
20 °C

Additional information

The viscosity of a 10% aqeuous solution of hexafluorsilicic acid at 10 Pa was found to be 0.011Pas or 11cps (REACH Centre, 2010). The viscosity of 23% aqeuous solution of hexafluorosilicic acid is reported to be 6.5 cps at 20 degrees Celsius (ATSDR).