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Viscosity

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Reference
Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017-02-16 – 2017-02-16
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 Test item 1'-acetonaphthone (CAS No. 941-98-0 )was done as per the test guideline 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:1-(1-naphthyl)ethanone
- Molecular formula: C12 H10 O
- Molecular weight: 170.21 g/mol
- Smiles notation: c12c(cccc1C(C)=O)cccc2
- InChl: 1S/C12H10O/c1-9(13)11-8-4-6-10-5-2-3-7-12(10)11/h2-8H,1H3
- Substance type: Organic
- Physical state: Liquid
Key result
Temp.:
20°C
Parameter:
dynamic viscosity (in mPa s)
Value:
36.586
Remarks on result:
other: No other detail available
Key result
Temp.:
40°C
Parameter:
dynamic viscosity (in mPa s)
Value:
76.329
Remarks on result:
other: No other detail available
Key result
Temp.:
20°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
32.357
Remarks on result:
other: No other detail available
Key result
Temp.:
40°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
68.493
Remarks on result:
other: No other detail available

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 capillary using Redwood

Viscometer No. 1

   

 Temperature at which

the testing was done

40°C and 60°C 

 

 

 Observations      

    Time taken to fill 50ml flask at

20°C in ‘Sec’ (Mean Value)

131sec    

 Time taken to fill 50ml at 40°C

flask in ‘Sec’ (Mean Value)

277.3sec 

 Density of fluid in gm/cc

  1.1144 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

= 131 × 0.247sec

= 32.357mm²/sec

 

For Test Temperature at 40°C

ν=ct

= 277.3 × 0.247sec

= 68.4931 mm²/sec

 

2. Calculation of Dynamic Viscosities:

For Test Temperature at 20°C

ν= η/ρ

32.357 =η 1.1144

η = 32.357 x 1.1144

= 36.0586 mPa.S

 

For Test Temperature at 40°C

ν= η/ρ

68.4931 =η/ 1.1144

η = 68.4931 x 1.1144

= 76.3287 mPa.S

Conclusions:
The viscosity determination of Test item 1'-acetonaphthone (CAS No. 941-98-0 )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 32.357 mm²/sec and 68.4931 mm²/s, respectively. Dynamic viscosity (calculated) of Test item at 20°C and 40°C is 36.0586 mPa.S and 76.3287 mPa.S, respectively
Executive summary:

The viscosity determination of Test item 1'-acetonaphthone (CAS No. 941-98-0 )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 32.357 mm²/sec and 68.4931 mm²/s, respectively. Dynamic viscosity (calculated) of Test item at 20°C and 40°C is 36.0586 mPa.S and 76.3287 mPa.S, respectively

Description of key information

The viscosity determination of Test item 1'-acetonaphthone (CAS No. 941-98-0 )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 32.357 mm²/sec and 68.4931 mm²/s, respectively. Dynamic viscosity (calculated) of Test item at 20°C and 40°C is 36.0586 mPa.S and 76.3287 mPa.S, respectively

Key value for chemical safety assessment

Viscosity:
32.357 mm²/s (static)
at the temperature of:
20 °C

Additional information

The viscosity determination of Test item 1'-acetonaphthone (CAS No. 941-98-0 )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 32.357 mm²/sec and 68.4931 mm²/s, respectively. Dynamic viscosity (calculated) of Test item at 20°C and 40°C is 36.0586 mPa.S and 76.3287 mPa.S, respectively