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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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Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
weight of evidence
Study period:
03 NOV 2009
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Test Guideline 114 (Viscosity of Liquids)
GLP compliance:
yes (incl. QA statement)
Type of method:
rotational viscometer (dynamic)
Temp.:
20°C
Parameter:
dynamic viscosity (in mPa s)
Value:
28.1

 Results of measured apparent viscosity:

Test No.

Temperature

Rotational frequency

Apparent viscosity

Difference between two measurements

Average viscosity

°C

min-1

mPa*s

%

mPa*s

1.

20

100

28.1

0.0

28.1

2.

20

28.1

 

Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
weight of evidence
Study period:
04 NOV 2009
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Test Guideline 114 (Viscosity of Liquids)
GLP compliance:
yes (incl. QA statement)
Type of method:
rotational viscometer (dynamic)
Temp.:
20°C
Parameter:
dynamic viscosity (in mPa s)
Value:
23.5

Results of measured apparent viscosity:

Test No.

Temperature

Rotational frequency

Apparent viscosity

Difference between two measurements

Average viscosity

°C

min-1

mPa*s

%

mPa*s

1.

20

100

23.5

0.0

23.5

2.

20

23.5

Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
weight of evidence
Study period:
29 OCT 2009
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods with acceptable restrictions
Qualifier:
according to guideline
Guideline:
other: ISO 3104
Principles of method if other than guideline:
Capillary method (Ubbelohde)
GLP compliance:
no
Type of method:
capillary viscometer (static)
Temp.:
20°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
28.6
Temp.:
40°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
13.3

Description of key information

23.5 - 28.1 mPa*s at 20 °C (OECD 114)

28.6 mm²/s at 20 °C (ISO 3104)

13.3 mm²/s at 40 °C (ISO 3104)

28.6 mm²/s at 20 °C

28.6 mm²/s at 20 °C, 13.3 mm²/s at

40 °C (ISO 3104)

Key value for chemical safety assessment

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

Additional information

The data refer to measurements of substances of various single degrees of ethoxylation (EO = 2 and EO = 1). For a general ethoxylation degree of < 2.5 EO, a weight of evidence approach is applied.