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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Viscosity

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Administrative data

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Reference
Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Qualifier:
no guideline followed
Principles of method if other than guideline:
Dynamic viscosity of various concentrations of sulphuric acid
GLP compliance:
not specified
Type of method:
other: unknown
Temp.:
20°C
Parameter:
other: centipoise
Value:
22.5
Remarks on result:
other: 95% concentration
Temp.:
20°C
Parameter:
other: centipose
Value:
25
Remarks on result:
other: 90% concentration
Temp.:
20°C
Parameter:
other: centipoise
Value:
15
Remarks on result:
other: 75% concentration

The viscosity of sulphuric acid is dependent on concentration and temperature. A viscosity of 22.5 cP (0.0025 PaS; 22.5 mPaS) is reported for 95% sulphuric acid at 20 degrees Celsius.

Conclusions:
A viscosity of 22.5 cP (0.0025 PaS; 22.5 mPaS) is reported for 95% sulphuric acid at 20 degrees Celsius.
Executive summary:

The viscosity of sulphuric acid is dependent on concentration and temperature. A viscosity of 22.5 cP (0.0025 PaS; 22.5 mPaS) is reported for 95% sulphuric acid at 20 degrees Celsius.

Description of key information

A viscosity of 22.5 cP (0.0025 PaS; 22.5 mPaS) is reported for 95% sulphuric acid at 20 degrees Celsius.

Key value for chemical safety assessment

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

Additional information

The viscosity of sulphuric acid is dependent on concentration and temperature. A viscosity of 22.5 cP (0.0025 PaS; 22.5 mPaS) is reported for 95% sulphuric acid at 20 degrees Celsius.