Isopentyl benzoate

Viscosity

Link to relevant study record(s)

Reference

Endpoint:

viscosity

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2017-02-28 – 2017-02-28

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

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

Specific details on test material used for the study:

- Name of test material (as cited in study report): Isopentyl Benzoate
- Molecular formula: C12 H16 O2
- Molecular weight : 192.256 g/mol
- Smiles notation: c1(C(OCCC(C)C)=O)ccccc1
- InChl : 1S/C12H16O2/c1-10(2)8-9-14-12(13)11-6-4-3-5-7-11/h3-7,10H,8-9H2,1-2H3
- Substance type: organic
- Physical state: Liquid

Key result

Temp.:

20°C

Parameter:

dynamic viscosity (in mPa s)

Value:

16.15

Key result

Temp.:

40°C

Parameter:

dynamic viscosity (in mPa s)

Value:

16.671

Key result

Temp.:

20°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

16.368

Key result

Temp.:

40°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

16.896

Method Details	Observations	Remarks if, any
Guideline	OECD 114
Method of measurement	Redwood Viscometer No. -1
Principle of method	The flow of chemical under gravity through a capillary using Redwood Viscometer 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)	62 sec
	Time taken to fill 50ml at 40°C flask in ‘Sec’ (Mean Value)	64 sec
	Density of fluid in gm/cc	0.9867 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 20°C

ν=ct

= 62 sec × 0.264sec

= 16.3680mm²/sec

 

For Test Temperature at 40°C

ν=ct

= 64 sec × 0.264sec

= 16.8960 mm²/sec

 

2. Calculation of Dynamic Viscosities:

For Test Temperature at 20°C

ν= η/ρ

16.3680 =η 0.9867

η = 16.3680 x 0.9867

= 16.1503 mPa.S

 

For Test Temperature at 40°C

ν= η/ρ

16.8960 =η/ 0.9867

η = 16.8960 x 0.9867

= 16.6712 mPa.S

Conclusions:

Kinematic viscosity (experimental) of Isopentyl Benzoate( CAS No. 94-46-2)at 20°C and 40°C is 16.3680mm²/secand 16.8960mm²/s,respectively.
Dynamic viscosity (calculated) of Isopentyl Benzoate( CAS No. 94-46-2)at 20°C and 40°C is 16.1503mPa.Sand 16.6712mPa.S, respectively

Executive summary:

The viscosity determination of Test item Isopentyl Benzoate (CAS No. 94-46-2 )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 16.3680 mm²/sec and 16.8960 mm²/s, respectively. Dynamic viscosity (calculated) of Test item at 20°C and 40°C is 16.1503 mPa.S and 16.6712 mPa.S, respectively.

Description of key information

The viscosity determination of Test item Isopentyl Benzoate (CAS No. 94-46-2 )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 16.3680 mm²/sec and 16.8960 mm²/s, respectively. Dynamic viscosity (calculated) of Test item at 20°C and 40°C is 16.1503 mPa.S and 16.6712 mPa.S, respectively.

Key value for chemical safety assessment

Viscosity:

16.368 mm²/s (static)

at the temperature of:

20 °C

Additional information

The viscosity determination of Test item Isopentyl Benzoate (CAS No. 94-46-2 )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 16.3680 mm²/sec and 16.8960 mm²/s, respectively. Dynamic viscosity (calculated) of Test item at 20°C and 40°C is 16.1503 mPa.S and 16.6712 mPa.S, respectively.