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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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: 2g: data from handbook or collection of data
Qualifier:
no guideline available
Guideline:
other: no data
Deviations:
not specified
Principles of method if other than guideline:
No data available
GLP compliance:
not specified
Type of method:
other: no data
Temp.:
other: 30.0°C
Parameter:
dynamic viscosity (in mPa s)
Value:
3.4
Remarks on result:
other: The data is indicated in cP. The conversion factor is 1cP=1mPa.s.
Temp.:
other: 120.0°C
Parameter:
dynamic viscosity (in mPa s)
Value:
0.82
Remarks on result:
other: The data is indicated in cP. The conversion factor is 1cP=1mPa.s.
Executive summary:

According to the Merck Index the viscosity of Heptanoic Acid is 3.40 mPa.s at 30° C and 0.82 mPa.s at 120 °C.

Description of key information

3.40 mPa.s at 30° C and 0.82 mPa.s at 120 °C

Key value for chemical safety assessment

Viscosity:
3.4 mPa · s (dynamic)
at the temperature of:
30 °C

Additional information

No experimental data is available for the viscosity of heptanoic acid.


There is only one data coming from handbook (Merck index).


As the viscosity is not a critical property for risk assesment, it is assumed to use this data as a key study.