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Viscosity

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Reference
Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
Study was performed according to OECD 114 and ISO 3219 guidelines (with GLP)
Qualifier:
according to
Guideline:
OECD Test Guideline 114 (Viscosity of Liquids)
Deviations:
no
Qualifier:
according to
Guideline:
other: ISO 3219: 1993 (E): "Plastics/resins in the liquid state or as emulsions or dispersions – Determination of viscosity using a rotational viscometer with defined shear rate”
Deviations:
no
GLP compliance:
yes
Type of method:
rotational viscometer (dynamic)
Key result
Temp.:
20°C
Parameter:
dynamic viscosity (in mPa s)
Value:
ca. 1 357
Remarks on result:
other: At shear rate of 25.0 s-1

Table 1. Results of measured apparent viscosity

 

Test no.

Temperature (ºC)

Shear rate (s-1)

Apparent viscosity (mPa·s)

Average apparent

viscosity (mPa·s)

1

20

25

1357

1357

2

20

25

1357

3

20

25

1357

Conclusions:
The average apparent viscosity of amides, C8 -18 and C18 -unsatd., N,N-bis(hydroxyethyl) was 1357 mPa·s at 20 ºC (shear rate 25 s-1).
Executive summary:

A study was conducted to determine the apparent viscosity of amides, C8 -18 and C18 -unsatd., N,N-bis(hydroxyethyl) in accordance with ISO 3219 and OECD 114 guidelines. The apparent viscosity of amides, C8 -18 and C18 -unsatd., N,N-bis(hydroxyethyl) was determined by the use of standard Brookfield test method at 20 ± 0.2 °C for shear rate of 4.99, 10.0, 25.0 and 50.0 s-1 was found to be 1357 mPa·s at 20 ºC (shear rate 25 s-1).

Description of key information

The viscosity was determined according to ISO Method 3219 and OECD Guideline 114 (Amin, 2010).

Key value for chemical safety assessment

Viscosity:
1 357 mPa · s (dynamic)
at the temperature of:
20 °C

Additional information