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Viscosity

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Reference
Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
key study
Study period:
19-01-2018 – 19-01-2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
Experimental test result performed using standard OECD test guidelines
Reference:
Composition 0
Qualifier:
according to
Guideline:
OECD Test Guideline 114 (Viscosity of Liquids)
Principles of method if other than guideline:
The viscosity determination of Test item (S)-2-methyl-5-(1-methylvinyl)cyclohex-2-en-1-one (CAS No. 2244-16-8) was done as per the test guideline OECD 114 using Redwood Viscometer No. 1.
GLP compliance:
not specified
Type of method:
other: by Redwood Viscometer No. 1.
Test material information:
Composition 1
Specific details on test material used for the study:
- Name of test material: d-Carvone- IUPAC name: (5S)-2-methyl-5-(prop-1-en-2-yl)cyclohex-2-en-1-one- Molecular formula: C10H14O- Molecular weight: 150.22 g/mole- Smiles :C1[C@H](CC=C(C1=O)C)C(C)=C- Inchl: 1S/C10H14O/c1-7(2)9-5-4-8(3)10(11)6-9/h4,9H,1,5-6H2,2-3H3/t9-/m0/s1- Substance type: Organic- Physical state: Colorless
Key result
Temp.:
20°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
24.7
Remarks on result:
other: no other details mentioned
Key result
Temp.:
40°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
21.57
Remarks on result:
other: no other deails mentioned
Key result
Temp.:
20°C
Parameter:
dynamic viscosity (in mPa s)
Value:
23.663
Remarks on result:
other: no other details mentioned
Key result
Temp.:
40°C
Parameter:
dynamic viscosity (in mPa s)
Value:
20.665
Remarks on result:
other: no other details mentioned

TEST DESCRIPTION AND RESULT

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 is done

20°C and 40°C

 

Observations

 

Time taken to fill 50ml flask at

20°C in ‘Sec’ (Mean Value)

100 sec

Time taken to fill 50ml at 40°C

flask in ‘Sec’ (Mean Value)

87.33 sec

Density of fluid in gm/cc

0.9580 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

= 100 × 0.247sec

= 24.7000mm²/sec

For Test Temperature at 40°C

ν=ct

= 87.33 × 0.247sec

= 21.5705 mm²/sec

2. Calculation of Dynamic Viscosities:

For Test Temperature at 20°C

ν= η/ρ

24.7000 =η 0.9580

η = 24.7000 x 0.9580

= 23.6626 mPa.S

For Test Temperature at 40°C

ν= η/ρ

21.5705 =η/ 0.9580

η = 21.5705 x 0.9580

= 20.6645 mPa.S

Sr. no

Temperature of

Test item (°C)

 

Time taken to fill 50ml flask at 20°C in ‘Sec’ (Mean Value)

Kinematic

Viscosity in

mm²/sec

Density

in gm/cc

Dynamic (or) Absolute

Viscosity mPa.S

1

20°C 

100

24.7000

0.9580

23.6626

2

40°C

87.33

21.5705

0.9580

20.6645

Conclusions:
Kinematic viscosity (experimental) of (S)-2-methyl-5-(1-methylvinyl)cyclohex-2-en-1-one (CAS No. 2244-16-8) at 20°C and 40°C was 24.7000 mm²/sec and 21.5705 mm²/s, respectively.Dynamic viscosity (calculated) of (S)-2-methyl-5-(1-methylvinyl)cyclohex-2-en-1-one (CAS No. 2244-16-8) at 20°C and 40°C was 23.6626 mPa.S and 20.6645 mPa.S, respectively.
Executive summary:

The viscosity determination of Test item (S)-2-methyl-5-(1-methylvinyl)cyclohex-2-en-1-one (CAS No. 2244-16-8) 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 was 24.7000 mm²/sec and 21.5705 mm²/s, respectively.

Dynamic viscosity (calculated) of Test item at 20°C and 40°C was 23.6626 mPa.S and 20.6645 mPa.S, respectively.

Description of key information

Kinematic viscosity (experimental) of (S)-2-methyl-5-(1-methylvinyl)cyclohex-2-en-1-one (CAS No. 2244-16-8) at 20°C and 40°C was 24.7000 mm²/sec and 21.5705 mm²/s, respectively.

Dynamic viscosity (calculated) of (S)-2-methyl-5-(1-methylvinyl)cyclohex-2-en-1-one (CAS No. 2244-16-8) at 20°C and 40°C was 23.6626 mPa.S and 20.6645 mPa.S, respectively.

Key value for chemical safety assessment

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

Additional information

The viscosity determination of Test item (S)-2-methyl-5-(1-methylvinyl)cyclohex-2-en-1-one (CAS No. 2244-16-8) 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 was 24.7000 mm²/sec and 21.5705 mm²/s, respectively.

Dynamic viscosity (calculated) of Test item at 20°C and 40°C was 23.6626 mPa.S and 20.6645 mPa.S, respectively.