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Viscosity

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Reference
Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
key study
Study period:
26-04-2017 – 26-04-2017
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
Reference:
Composition 0
Qualifier:
according to
Guideline:
OECD Test Guideline 114 (Viscosity of Liquids)
Principles of method if other than guideline:
Measurement of the flow of test item under gravity through a capillary 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 (as cited in study report): 1-methylpiperidin-4-ol
- Molecular formula: C6H13NO
- Molecular weight: 115.175 g/mol
- Substance type: Organic
- Physical state: Liquid
Key result
Temp.:
other: 30 °C
Parameter:
kinematic viscosity (in mm²/s)
Value:
44.361
Temp.:
other: 30°C
Parameter:
dynamic viscosity (in mPa s)
Value:
43.363
Temp.:
other: 50°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
38.112
Temp.:
other: 50°C
Parameter:
dynamic viscosity (in mPa s)
Value:
37.255

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 30°C

ν=ct

= 179.6 × 0.247sec

= 44.3612mm²/sec

For Test Temperature at 50°C

ν=ct

= 154.3 × 0.247sec

= 38.1121 mm²/sec

 

2. Calculation of Dynamic Viscosities:
For Test Temperature at 30°C

ν= η/ρ

44.3612 =η 0.9775

η = 44.3612 x 0.9775

= 43.3630 mPa.S

For Test Temperature at 50°C

ν= η/ρ

38.1121 =η/ 0.9775

η = 38.1121 x 0.9775

= 37.2545 mPa.S

Conclusions:
Kinematic viscosity (experimental) of 1-methylpiperidin-4-ol (CAS No. 106-52-5)at 30°C and 50°C is determined to 44.3612mm²/sec and 38.1121mm²/s, respectively.
Dynamic viscosity (calculated) of 1-methylpiperidin-4-ol (CAS No. 106-52-5)at 30°C and 50°C is determined to be 44.5963mPa.S and 38.3140mPa.S, respectively.
Executive summary:

The viscosity determination of Test item 1-methylpiperidin-4-ol (CAS No. 106-52-5 ) was done as per the test guideline OECD 114 using Redwood Viscometer No. 1. Kinematic viscosity (experimental) of Test item at 30°C and 50°C is 44.3612 mm²/sec and 38.1121 mm²/s, respectively. Dynamic viscosity (calculated) of Test item at 30°C and 50°C is 44.5963 mPa.S and 38.3140 mPa.S, respectively.

Description of key information

Kinematic viscosity (experimental) of 1-methylpiperidin-4-ol (CAS No. 106-52-5)at 30°C and 50°C is determined to 44.3612mm²/sec and 38.1121mm²/s, respectively.

Dynamic viscosity (calculated) of 1-methylpiperidin-4-ol (CAS No. 106-52-5)at 30°C and 50°C is determined to be 44.5963mPa.S and 38.3140mPa.S, respectively.

Key value for chemical safety assessment

Viscosity:
44.361 mm²/s (static)
at the temperature of:
30 °C

Additional information

The viscosity determination of Test item 1-methylpiperidin-4-ol (CAS No. 106-52-5 ) was done as per the test guideline OECD 114 using Redwood Viscometer No. 1. Kinematic viscosity (experimental) of Test item at 30°C and 50°C is 44.3612 mm²/sec and 38.1121 mm²/s, respectively. Dynamic viscosity (calculated) of Test item at 30°C and 50°C is 44.5963 mPa.S and 38.3140 mPa.S, respectively.