Cinnamaldehyde

Viscosity

Link to relevant study record(s)

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 OECD test guideline

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.:

20°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

21.25

Key result

Temp.:

40°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

17.29

Key result

Temp.:

20°C

Parameter:

dynamic viscosity (in mPa s)

Value:

22.12

Key result

Temp.:

40°C

Parameter:

dynamic viscosity (in mPa s)

Value:

18

TEST DESCRIPTION AND RESULT

Method Details		Observations	Remarks if, any
Guideline	OECD - 114
Method of measurement	Redwood Viscometer No. -1
Principle of method	Measurement of resistance to flow using 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)	80.5 sec
	Time taken to fill 50ml at 40 °C flask in ‘Sec’ (Mean Value)	65.5 sec
	Density of fluid in gm/cc	1.0414 gm/cm3

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 Temperature at 20⁰C

               ν=ct

                =0.264 x 80.5sec             

             = 21.25mm²/sec

 

For Test Temperature at 40⁰C

ν=ct

               =0.264 x 65.5

               = 17.29mm²/sec

 

2.      Calculation of Dynamic Viscosities:

 

For Test Temperature at 20⁰C

               ν= η/ρ

               21.25= η/1.0414               

              η = 21.25 x 1.0414               

                 = 22.12mPa.S

 

For Test Temperature at 40⁰C

               ν= η/ρ

               17.29= η/1.0414               

              η = 17.29 x 1.0414               

                 = 18.00mPa.S

Result:

Sr. No.	Temperature of Sample (°C)	Time taken to fill the 50 ml of flask in ‘seconds’	Kinematic Viscosity in mm^2/s	Density in gm/cc	Dynamic (or) Absolute Viscosity mPa.S
1.	20°C	80.5 sec	21.25mm^2/sec	1.0414 gm/cc	22.12mPa.S
2.	40°C	65.5 sec	17.29mm^2/sec	1.0414 gm/cc	18.00mPa.S

 

Conclusions:

Kinematic viscosity (experimental) of test chemical at 20°C and 40°C was determined to be 21.25 mm²/sec & 17.29 mm²/s and Dynamic viscosity of the test chemical was calculated to be 22.12 mPa.S & 18.00 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 114 using Redwood Viscometer No. 1. Kinematic viscosity (experimental) of test chemical at 20°C and 40°C was determined to be 21.25 mm²/sec & 17.29 mm²/s and Dynamic viscosity of the test chemical was calculated to be 22.12 mPa.S & 18.00 mPa.S at 20°C and 40°C, respectively.

Description of key information

On the basis of the available data from study report, 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 20°C and 40°C was determined to be 21.25 mm²/sec & 17.29 mm²/s and Dynamic viscosity of the test chemical was calculated to be 22.12 mPa.S & 18.00 mPa.S at 20°C and 40°C, respectively.

Key value for chemical safety assessment

Viscosity:

21.25 mm²/s (static)

at the temperature of:

20 °C

Additional information

On the basis of the available data from study report, 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 20°C and 40°C was determined to be 21.25 mm²/sec & 17.29 mm²/s and Dynamic viscosity of the test chemical was calculated to be 22.12 mPa.S & 18.00 mPa.S at 20°C and 40°C, respectively.