## Diss Factsheets

Physical & Chemical properties

## Viscosity

Currently viewing:

### Link to relevant study record(s)

##### Reference
Endpoint:
viscosity
Type of information:
experimental study
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Experimental data using standard methods of analysis
Qualifier:
according to guideline
Guideline:
OECD Test Guideline 114 (Viscosity of Liquids)
Principles of method if other than guideline:
Measurement of resistance to flow using Redwood Viscometer No. 1.

GLP compliance:
no
Type of method:
other: Redwood Viscometer No. 1
Temp.:
20°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
10.82
Remarks on result:
other: Kinematic viscosity
Temp.:
20°C
Parameter:
dynamic viscosity (in mPa s)
Value:
9.38
Remarks on result:
other: Dynamic viscosity

CALCULATIONS:

ν=ct-----------------------------------------(i)

Where, ν= Kinematic viscosity

c= Viscometer constant

t= time of flow in seconds (Redwood second)

For Redwood Viscometer- I, the values for the constants are as below:

 Time of flow,t C 40 to 85 seconds 0.264 85 to 2000 0.247

ν= η/ρ------------------------------ (ii)

Where, ν= Kinematic viscosity

η= Dynamic viscosity

ρ= Density of fluid

1.      Calculation of Kinematic Viscosities:

For Test Temperatureat 200C

ν=ct

= 0.264 ×41 sec

=10.82mm2/sec

For Test Temperature at 400C

ν=ct

= 0.264 ×38 sec

=10.03mm2/sec

2.      Calculation of Dynamic Viscosities:

For Test Temperature at 200C

ν= η/ρ

10.82=η/0.8676

η = 10.82 X0.8676

= 9.38mPa.S

For Test Temperature at 400C

ν= η/ρ

10.03 =η/0.8676

η =10.03X0.8676

=8.70mPa.S

Conclusions:
Kinematic viscosity (experimental) of 3,7-dimethylocta-2,6-dienenitrile (CAS No. 5146-66-7)at 20 0C and 40 0C is 10.82 mm2/secand 10.03 mm2/s, respectively.
Dynamic viscosity (calculated) of 3,7-dimethylocta-2,6-dienenitrile (CAS No. 5146-66-7)at 20 0C and 40 0C is 9.38 mPa.Sand 8.70mPa.S, respectively.
Executive summary:

Kinematic viscosity (experimental) of 3,7-dimethylocta-2,6-dienenitrile (CAS No. 5146-66-7)at 200C and 400C is10.82 mm2/secand10.03 mm2/s, respectively.

Dynamic viscosity (calculated) of 3,7-dimethylocta-2,6-dienenitrile (CAS No. 5146-66-7)at 200C and 400C is 9.38 mPa.S and 8.70m Pa.S, respectively.

### Description of key information

Kinematic viscosity (experimental) of 3,7-dimethylocta-2,6-dienenitrile (CAS No. 5146-66-7)at 20 0C and 40 0C is 10.82 mm2/secand 10.03 mm2/s, respectively.

Dynamic viscosity (calculated) of 3,7-dimethylocta-2,6-dienenitrile (CAS No. 5146-66-7)at 20 0C and 40 0C is 9.38 mPa.Sand 8.70mPa.S, respectively.

### Key value for chemical safety assessment

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