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Viscosity

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Reference
Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
key study
Study period:
18-05-2017 – 18-05-2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
Experimental result performed using standard methods of analysis
Qualifier:
according to
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
Key result
Temp.:
20°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
27.738
Key result
Temp.:
40°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
23.86
Key result
Temp.:
20°C
Parameter:
dynamic viscosity (in mPa s)
Value:
30.673
Key result
Temp.:
40°C
Parameter:
dynamic viscosity (in mPa s)
Value:
26.385

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 Temperature at 20°C

ν=ct

= 112.3 × 0.247sec

= 27.7381mm²/sec

For Test Temperature at 40°C

ν=ct

= 96.6 × 0.247sec

= 23.8602 mm²/sec

 

2.Calculation of Dynamic Viscosities:

For Test Temperature at 20°C

ν= η/ρ

27.7381 =η 1.1058

η = 27.7381 x 1.1058

= 30.6727 mPa.S

For Test Temperature at 40°C

ν= η/ρ

23.8602 =η/ 1.1058

η = 23.8602 x 1.1058

= 26.3846 mPa.S

Conclusions:
The viscosity determination of chemical was done as per the test guideline OECD 114 using Redwood Viscometer No. 1. Kinematic viscosity (experimental) of Test item at 20°C and 40°C is 27.7381 mm²/sec and 23.8602 mm²/s, respectively. Dynamic viscosity (calculated) of Test item at 20°C and 40°C is 30.6727 mPa.S and 26.3846 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 item at 20°C and 40°C is 27.7381 mm²/sec and 23.8602 mm²/s, respectively. Dynamic viscosity (calculated) of Test item at 20°C and 40°C is 30.6727 mPa.S and 26.3846 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 item at 20°C and 40°C is 27.7381 mm²/sec and 23.8602 mm²/s, respectively. Dynamic viscosity (calculated) of Test item at 20°C and 40°C is 30.6727 mPa.S and 26.3846 mPa.S, respectively.

Key value for chemical safety assessment

Viscosity:
27.738 mm²/s (static)
at the temperature of:
20 °C

Additional 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 item at 20°C and 40°C is 27.7381 mm²/sec and 23.8602 mm²/s, respectively. Dynamic viscosity (calculated) of Test item at 20°C and 40°C is 30.6727 mPa.S and 26.3846 mPa.S, respectively.