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Diss Factsheets

Physical & Chemical properties

Viscosity

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017-01-03 – 2017-01-03
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:
The viscosity determination of chemical p-tolyl acetate (CAS No. 140-39-6 )was done as per the test OECD 114 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): p-tolyl acetate
Molecular formula:C9H10O2
Molecular weight:150.176 g/mol
Substance Type: Organic
Physical State: Liquid
Key result
Temp.:
20°C
Parameter:
dynamic viscosity (in mPa s)
Value:
12.98
Key result
Temp.:
40°C
Parameter:
dynamic viscosity (in mPa s)
Value:
8.82
Key result
Temp.:
20°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
11.88
Key result
Temp.:
40°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
8.07

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)

45 sec

 

Time taken to fill 50ml at 40°C

flask in ‘Sec’ (Mean Value)

30.6 sec

 

Density of fluid in gm/cc

1.093 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

= 45×0.264sec

= 11.88mm²/sec

For Test Temperature at 40°C

ν=ct

= 30.6×0.264sec

= 8.07 mm²/sec

2. Calculation of Dynamic Viscosities:

For Test Temperature at 20°C

ν=η/ρ

11.88 =η1.093 

η= 11.88 x 1.093

= 12.98 mPa.S

For Test Temperature at 40°C

ν=η/ρ

8.07 =η/ 1.093

η= 8.07 x 1.093

= 8.82 mPa.S

Conclusions:
The viscosity determination of chemical p-tolyl acetate (CAS No. 140-39-6 )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 11.88 mm²/sec and 8.07 mm²/s, respectively. Dynamic viscosity (calculated) of Test item at 20°C and 40°C is 12.98 mPa.S and 8.82 mPa.S, respectively.
Executive summary:

The viscosity determination of chemical  p-tolyl acetate (CAS No. 140-39-6 )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 11.88 mm²/sec and 8.07 mm²/s, respectively. Dynamic viscosity (calculated) of Test item at 20°C and 40°C is 12.98 mPa.S and 8.82 mPa.S, respectively.

Description of key information

The viscosity determination of chemical  p-tolyl acetate (CAS No. 140-39-6 )was done as per the test guideline OECD 114 using Redwood Viscometer No. 1. Kinematic viscosity (experimental) at 20°C and 40°C is 11.88 mm²/sec and 8.07 mm²/s, respectively. Dynamic viscosity (calculated) of Test item at 20°C and 40°C is 12.98 mPa.S and 8.82 mPa.S, respectively.

Key value for chemical safety assessment

Viscosity:
11.88 mm²/s (static)
at the temperature of:
40 °C

Additional information

The viscosity determination of chemical  p-tolyl acetate (CAS No. 140-39-6 )was done as per the test guideline OECD 114 using Redwood Viscometer No. 1. Kinematic viscosity (experimental) at 20°C and 40°C is 11.88 mm²/sec and 8.07 mm²/s, respectively. Dynamic viscosity (calculated) of Test item at 20°C and 40°C is 12.98 mPa.S and 8.82 mPa.S, respectively.