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Viscosity

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Reference
Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017-02-08 – 2017-02-08
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 the test material: 3-bromoanisole
- Molecular formula: C7H7BrO
- Molecular weight: 187.035 g/mol
- Substance type: Organic
- Smiles: c1(cc(ccc1)Br)OC
-Physical state-Liquid
Key result
Temp.:
20°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
10.903
Key result
Temp.:
40°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
17.239
Key result
Temp.:
20°C
Parameter:
dynamic viscosity (in mPa s)
Value:
16.158
Key result
Temp.:
40°C
Parameter:
dynamic viscosity (in mPa s)
Value:
25.548

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)

41.3 sec

 

Time taken to fill 50ml at 40°C

flask in ‘Sec’ (Mean Value)

65.3 sec

 

Density of fluid in gm/cc

1.482 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

= 41.3 × 0.264sec

= 10.903mm²/sec

 

For Test Temperature at 40°C

ν=ct

= 65.3 × 0.264sec

= 17.239 mm²/sec

 

2. Calculation of Dynamic Viscosities:

For Test Temperature at 20°C

ν= η/ρ

10.903 =η 1.482

η = 10.903 x 1.482

= 16.158 mPa.S

 

For Test Temperature at 40°C

ν= η/ρ

17.239 =η/ 1.482

η = 17.239 x 1.482

= 25.548 mPa.S

Conclusions:
The viscosity determination of Test item 3-bromoanisole (CAS No. 2398-37-0) 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 10.903 mm²/sec and 17.239 mm²/s, respectively. Dynamic viscosity (calculated) of Test item at 20°C and 40°C is 16.158 mPa.S and 25.548 mPa.S, respectively.
Executive summary:

The viscosity determination of Test item 3-bromoanisole (CAS No. 2398-37-0) 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 10.903 mm²/sec and 17.239 mm²/s, respectively. Dynamic viscosity (calculated) of Test item at 20°C and 40°C is 16.158 mPa.S and 25.548 mPa.S, respectively.

Description of key information

The viscosity determination of Test item 3-bromoanisole (CAS No. 2398-37-0) 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 10.903 mm²/sec and 17.239 mm²/s, respectively. Dynamic viscosity (calculated) of Test item at 20°C and 40°C is 16.158 mPa.S and 25.548 mPa.S, respectively.

Key value for chemical safety assessment

Viscosity:
16.158 mPa · s (dynamic)
at the temperature of:
20 °C

Additional information

The viscosity determination of Test item 3-bromoanisole (CAS No. 2398-37-0) 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 10.903 mm²/sec and 17.239 mm²/s, respectively. Dynamic viscosity (calculated) of Test item at 20°C and 40°C is 16.158 mPa.S and 25.548 mPa.S, respectively.