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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
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
Experimental test result performed using standard test guidelines
Qualifier:
according to guideline
Guideline:
OECD Test Guideline 114 (Viscosity of Liquids)
GLP compliance:
no
Type of method:
other: Redwood Viscometer No. 1
Key result
Temp.:
40°C
Parameter:
dynamic viscosity (in mPa s)
Value:
14.482
Key result
Temp.:
other: 60°C
Parameter:
dynamic viscosity (in mPa s)
Value:
14.726
Key result
Temp.:
40°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
27.449
Key result
Temp.:
other: 60°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
27.911

Observation Table :              

    Method Details  Observations  Remarks if, any
 Guideline  OECD 114    

Method of

measurement

 Redwood Viscometer No. -1

 

 

 Principle of method

 The flow of test item under gravity

through a capillary using Redwood

Viscometer No. 1

    

 Temperature at which

the testing was done

40°C and 60°C 

 

 

 Observations      

    Time taken to fill 50ml flask at

20°C in ‘Sec’ (Mean Value)

111.13sec    

 Time taken to fill 50ml at 40°C

flask in ‘Sec’ (Mean Value)

113sec 

 Density of fluid in gm/cc

   0.5276gm/cc

1. Calculation of Kinematic Viscosities:

For Test Temperature at 40°C

ν=ct

= 111.13 × 0.247sec

= 27.4491mm²/sec

For Test Temperature at 60°C

ν=ct

= 113 × 0.247sec

= 27.9110 mm²/sec

2. Calculation of Dynamic Viscosities:

For Test Temperature at 40°C

ν= η/ρ

27.4491 =η 0.5276

η = 27.4491 x 0.5276

= 14.4821 mPa.S

For Test Temperature at 60°C

ν= η/ρ

27.9110 =η/ 0.5276

η = 27.9110 x 0.5276

= 14.7258 mPa.S

Conclusions:
The viscosity determination of test chemical was done as per the test guideline OECD 114 using Redwood Viscometer No. 1. Kinematic viscosity (experimental) of test chemical at 40°C and 60°C was 27.4491 mm²/sec and 27.9110 mm²/s, respectively. Dynamic viscosity (calculated) of test chemical at 40°C and 60°C was 14.4821 mPa.S and 14.7258 mPa.S, respectively.
Executive summary:

The viscosity determination of test chemical was done as per the test guideline OECD 114 using Redwood Viscometer No. 1. Kinematic viscosity (experimental) of test chemical at 40°C and 60°C was 27.4491 mm²/sec and 27.9110 mm²/s, respectively. Dynamic viscosity (calculated) of test chemical at 40°C and 60°C was 14.4821 mPa.S and 14.7258 mPa.S, respectively.

Description of key information

The viscosity determination of test chemical was done as per the test guideline OECD 114 using Redwood Viscometer No. 1. Kinematic viscosity (experimental) of test chemical at 40°C and 60°C was 27.4491 mm²/sec and 27.9110 mm²/s, respectively. Dynamic viscosity (calculated) of test chemical at 40°C and 60°C was 14.4821 mPa.S and 14.7258 mPa.S, respectively.

Key value for chemical safety assessment

Viscosity:
14.482 mPa · s (dynamic)
at the temperature of:
40 °C

Additional information

The viscosity determination of test chemical was done as pr the test guideline OECD 114 using Redwood Viscometer No. 1. Kinematic viscosity (experimental) of test chemical at 40°C and 60°C was 27.4491 mm²/sec and 27.9110 mm²/s, respectively. Dynamic viscosity (calculated) of test chemical at 40°C and 60°C was 14.4821 mPa.S and 14.7258 mPa.S, respectively.