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Diss Factsheets

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 result using standard methods of analysis
Qualifier:
according to guideline
Guideline:
OECD Test Guideline 114 (Viscosity of Liquids)
Principles of method if other than guideline:
The viscosity determination of test chemical was done as per the test guideline OECD Test Guideline 114 (Viscosity of Liquids) using Redwood Viscometer No. 1.
GLP compliance:
no
Type of method:
other: Redwood Viscometer No. 1
Key result
Temp.:
20°C
Parameter:
dynamic viscosity (in mPa s)
Value:
108.28
Key result
Temp.:
40°C
Parameter:
dynamic viscosity (in mPa s)
Value:
6.238
Key result
Temp.:
20°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
114.015
Key result
Temp.:
40°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
26.256

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 capillaryusing RedwoodViscometer No. 1

 

Temperature at which the testing is done

20°C and 40°C

 

 

 

Observations

Time taken to fill 50ml flask at 20 °C in ‘Sec’ (Mean Value)

 461.6 sec

Time taken to fill 50ml at 40°C flask in ‘Sec’ (Mean Value)

106.3 sec

Density of fluid in gm/cm3

0.9497 gm/cm3

1.      Calculation of Kinematic Viscosities:

  For Test Temperatureat 200C

               ν=ct

               = 461.6 sec x 0.247

                =  114.015 mm2/sec

 

For Test Temperature at 400C

ν=ct

               = 106.3 sec × 0.247

               = 26.256mm2/s

 

2.      Calculation of Dynamic Viscosities:

 

For Test Temperature at 200C

               ν= η/ρ

               114.015 =η/0.9497

               η = 114.015 x 0.9497.

                 = 108.280mPa.S

 

For Test Temperature at 400C

               ν= η/ρ

26.256 =η/0.9497

               η = 26.256 x 0.9497

                 = 6.238mPa.S

Conclusions:
Kinematic viscosity (experimental) of test chemical at 20°C and 40°C was determined to be 114.015 mm²/sec & 26.256 mm²/s and Dynamic viscosity of the test chemical was calculated to be 108.28 mPa.S & 6.238 mPa.S at 20°C and 40°C, respectively.
Executive summary:

The viscosity determination of test chemical was done as per the test guideline OECD Test Guideline 114 (Viscosity of Liquids) using Redwood Viscometer No. 1. Kinematic viscosity (experimental) of test chemical at 20°C and 40°C was determined to be 114.015 mm²/sec & 26.256 mm²/s and Dynamic viscosity of the test chemical was calculated to be 108.28 mPa.S & 6.238 mPa.S at 20°C and 40°C, respectively.

Description of key information

Based on the available data from study report, the viscosity determination of test chemical was done as per the test guideline OECD Test Guideline 114 (Viscosity of Liquids) using Redwood Viscometer No. 1. Kinematic viscosity (experimental) of test chemical at 20°C and 40°C was determined to be 114.015 mm²/sec & 26.256 mm²/s and Dynamic viscosity of the test chemical was calculated to be 108.28 mPa.S & 6.238 mPa.S at 20°C and 40°C, respectively.

Key value for chemical safety assessment

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

Additional information

Based on the available data from study report, the viscosity determination of test chemical was done as per the test guideline OECD Test Guideline 114 (Viscosity of Liquids) using Redwood Viscometer No. 1. Kinematic viscosity (experimental) of test chemical at 20°C and 40°C was determined to be 114.015 mm²/sec & 26.256 mm²/s and Dynamic viscosity of the test chemical was calculated to be 108.28 mPa.S & 6.238 mPa.S at 20°C and 40°C, respectively.