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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Study period:
2019
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Qualifier:
no guideline followed
Principles of method if other than guideline:
Instrumentation: AR-G2 rheometer –TA instrument
Viscosity was measured using an AR-G2 rheometer (TA Instruments, New Castle, DE). Temperature was controlled at the desired experimental temperature using a Peltier heating element. A 60 mm diameter parallel plate geometry was used. After sample loading, the sample was allowed for equilibrate for 6 min before the shear rate sweep measurements. Viscosities were measured at shear rates ranging from 1 to 100 s-1.

Precision and Accuracy: Based on 10 measurements of silicon surfactant samples, the single-operator standard deviation has been found to be 2~3 cp throughout the range 325 cp to 350 cp. Viscosity standards were used as references to get the accuracy statement. The test values were found with 95% confidence.
GLP compliance:
not specified
Type of method:
other: shear rate sweep
Standard covering the apparatus used:
AR-G2 rheometer –TA instrument
Key result
Temp.:
20°C
Parameter:
other: cP
Value:
3.35
Remarks on result:
other: sample EP-AT-N 01
Key result
Temp.:
other: 25 °C
Parameter:
other: cP
Value:
3.9
Remarks on result:
other: sample EP-AT-N 5
Conclusions:
The viscosities are observed to be independent of shear rate, indicating Newtonian behavior. The average viscosity at 25°C was found to be 45.1 cP.
Executive summary:

The viscosities are observed to be independent of shear rate, indicating Newtonian behavior. The average viscosity at 25°C was found to be 45.1 cP.

Description of key information

Key value for chemical safety assessment

Viscosity:
3.9 mPa · s (dynamic)
at the temperature of:
21 °C

Additional information