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Viscosity

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Reference
Endpoint:
viscosity
Type of information:
read-across based on grouping of substances (category approach)
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
KL2 due to read across
Justification for type of information:
Refer to section 13 of IUCLID for details on the category justification.
Qualifier:
according to guideline
Guideline:
OECD Test Guideline 114 (Viscosity of Liquids)
Deviations:
no
Qualifier:
according to guideline
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)
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 apparent viscosity was determined to be 1357 mPa·s at 20 ºC (shear rate 25 s-1).
Executive summary:

A study was conducted to determine the apparent viscosity of the read across substance, C8 -18 and C18 -unsatd. DEA, in accordance with OECD Guideline 114 and ISO Method 3219 using the standard Brookfield method. The apparent viscosity was determined to be 1357 mPa·s at 20 ºC (shear rate 25 s-1) (Amin, 2010).

Description of key information

The apparent viscosity of the read across substance, C8-18 and C18 unsatd. DEA, was determined according to OECD Guideline 114 and ISO Method 3219 using the standard Brookfield method (Amin, 2010).

Key value for chemical safety assessment

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

Additional information