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Viscosity

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Reference
Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017-01-20 – 2017-01-20
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
Experimental test result performed using standard test guidelines
Reference:
Composition 0
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
Test material information:
Composition 1
Specific details on test material used for the study:
- Name of test material: (±)-menthone
- Molecular formula: C10H18O
- Molecular weight: 154.2512 g/mol
- Substance type: Organic
- Physical state: Liquid
Key result
Temp.:
20°C
Parameter:
dynamic viscosity (in mPa s)
Value:
19.44
Key result
Temp.:
40°C
Parameter:
dynamic viscosity (in mPa s)
Value:
16.88
Key result
Temp.:
20°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
17.42
Key result
Temp.:
40°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
15.12

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

= 66 × 0.264sec

= 17.42mm²/sec

 

For Test Temperature at 40°C

ν=ct

= 57.3 × 0.264sec

= 15.12 mm²/sec 

 

 

2. Calculation of Dynamic Viscosities:

For Test Temperature at 20°C

ν=η/ρ

17.42 =η 1.116

η = 17.42 x 1.116

= 19.44 mPa.S

 

For Test Temperature at 40°C

ν=η/ρ

15.12 =η/ 1.116

η = 15.12 x 1.116

= 16.88 mPa.S

Conclusions:
The viscosity determination of substance (±)-menthone (CAS No. 1074-95-9) was done as per the test guideline OECD 114 using Redwood Viscometer No. 1. Kinematic viscosity (experimental) of (±)-menthone at 20°C and 40°C is 17.42 mm²/sec and 15.12 mm²/s, respectively. Dynamic viscosity (calculated) of (±)-menthone at 20°C and 40°C is 19.44 mPa.S and 16.88 mPa.S, respectively.
Executive summary:

The viscosity determination of substance  (±)-menthone (CAS No. 1074-95-9 )was done as per the test guideline OECD 114 using Redwood Viscometer No. 1. Kinematic viscosity (experimental) of (±)-menthone  at 20°C and 40°C is 17.42 mm²/sec and 15.12 mm²/s, respectively. Dynamic viscosity (calculated) of (±)-menthone at 20°C and 40°C is 19.44 mPa.S and 16.88 mPa.S, respectively.

Description of key information

The viscosity determination of substance  (±)-menthone (CAS No. 1074-95-9 )was done as per the test guideline OECD 114 using Redwood Viscometer No. 1. Kinematic viscosity (experimental) of (±)-menthone  at 20°C and 40°C is 17.42 mm²/sec and 15.12 mm²/s, respectively. Dynamic viscosity (calculated) of (±)-menthone at 20°C and 40°C is 19.44 mPa.S and 16.88 mPa.S, respectively.

Key value for chemical safety assessment

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

Additional information

The viscosity determination of substance  (±)-menthone (CAS No. 1074-95-9 )was done as per the test guideline OECD 114 using Redwood Viscometer No. 1. Kinematic viscosity (experimental) of (±)-menthone  at 20°C and 40°C is 17.42 mm²/sec and 15.12 mm²/s, respectively. Dynamic viscosity (calculated) of (±)-menthone at 20°C and 40°C is 19.44 mPa.S and 16.88 mPa.S, respectively.