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Physical & Chemical properties

Viscosity

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Reference
Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
key study
Study period:
02-03 August 2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP compliant, carried out according to recognised guideline.
Qualifier:
according to
Guideline:
OECD Test Guideline 114 (Viscosity of Liquids)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
forced ball viscometer (dynamic)
Temp.:
20°C
Parameter:
dynamic viscosity (in mPa s)
Value:
96.3
Temp.:
other: 35.0°C
Parameter:
dynamic viscosity (in mPa s)
Value:
37.8

 

Table 1: Measured viscosity of Reofos 65 at 20°C

Properties of the ball

Density of
Test Item, (g/cm
3)

Falling time

(sec)

Dynamic Viscosity

(mPa*s)

Number:

3

1.1681

101

96.3

Density, g/cm3

8.128

101

96.3

100

95.3

Constant
mPa*sec*cm3/(g*sec)

0.136968

102

97.2

101

96.3

101

96.3

Mean

96.3

RSD

0.6 %

Table 2: Measured viscosity of Reofos 65 at 35°C

Properties of the ball

Density of
Test Item, (g/cm
3)

Falling time

(sec)

Dynamic Viscosity

(mPa*s)

Number:

2

1.167

276

37.9

Density, g/cm3

2.227

276

37.9

276

37.9

Constant
mPa*sec*cm3/(g*sec)

0.1294142

275

37.7

276

37.9

275

37.7

Mean

37.8

RSD

0.2 %

Conclusions:
Viscosity of Reofos 65 at 20°C (dynamic): 96.3 mPa*sec
Viscosity of Reofos 65 at 35°C (dynamic): 37.8 mPa*sec
Executive summary:

The viscosity of Reofos 65 was determined using the Höppler viscosometer.  

The following results were obtained:

Viscosity of Reofos 65 at 20°C (dynamic): 96.3 mPa*sec

Viscosity of Reofos 65 at 35°C (dynamic): 37.8 mPa*sec

Description of key information

Viscosity

Key value for chemical safety assessment

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

Additional information

The substance is not considered to pose an aspiration hazard.

20°C (dynamic): 96.3 mPa*sec

35°C (dynamic): 37.8 mPa*sec