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Physical & Chemical properties

Viscosity

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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:
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.