Benzyl butyrate

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:

Data is from study report

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:

15.655

Temp.:

40°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

14.678

Temp.:

20°C

Parameter:

dynamic viscosity (in mPa s)

Value:

15.717

Temp.:

40°C

Parameter:

dynamic viscosity (in mPa s)

Value:

14.736

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 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)	59.3 sec
	Time taken to fill 50ml at 40°C flask in ‘Sec’ (Mean Value)	55.6 sec
	Density of fluid in gm/cc	1.004 gm/cc

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

                = 0.264x59.3sec

                = 15.655mm²/sec

 

For Test Temperature at 40⁰C

ν=ct

               = 0.264X55.6sec

               = 14.678mm²/s

 

2.      Calculation of Dynamic Viscosities:

 

For Test Temperature at 20⁰C

               ν= η/ρ

               15.655 =η/1.004

               η = 15.655x1.004

                 =15.717mPa.S

 

For Test Temperature at 40⁰C

               ν= η/ρ

               14.678 =η/1.004

               η = 14.678 x 1.004

                 = 14.736mPa.S

Conclusions:

Based on the study, the kinematic viscosity (experimental) of test chemical at 20 °C and 40 °C was determined to be at 15.655mm2/sec and 14.678 mm2/s , respectively, whereas the dynamic viscosity (calculated) of test chemical at 20 °C and 40 °C was determined to be 15.717mPa.S and 14.736mPa.S, respectively.

Executive summary:

The viscosity determination of test chemical was done as per the test guideline OECD 114 using Redwood Viscometer No. 1. Based on the study, the kinematic viscosity (experimental) of test chemical at 20 °C and 40 °C was determined to be at 15.655mm2/sec and 14.678 mm2/s , respectively, whereas the dynamic viscosity (calculated) of test chemical at 20 °C and 40 °C was determined to be 15.717mPa.S and 14.736mPa.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. Based on the study, the kinematic viscosity (experimental) of test chemical at 20 °C and 40 °C was determined to be at 15.655mm2/sec and 14.678 mm2/s , respectively, whereas the dynamic viscosity (calculated) of test chemical at 20 °C and 40 °C was determined to be 15.717mPa.S and 14.736mPa.S, respectively.

Key value for chemical safety assessment

Viscosity:

15.717 mPa · s (dynamic)

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. Based on the study, the kinematic viscosity (experimental) of test chemical at 20 °C and 40 °C was determined to be at 15.655 mm2/sec and 14.678 mm2/s , respectively, whereas the dynamic viscosity (calculated) of test chemical at 20 °C and 40 °C was determined to be 15.717mPa.S and 14.736mPa.S, respectively.