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Viscosity

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Reference
Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017-03-09 – 2017-03-09
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:
- IUPAC name: 9,10-Anthracenedione, 1,4-diamino-, N,N'-bis(4-C7-17-branched alkylphenyl) derivs.
- Substance type: Organic
- Physical state: Liquid
Key result
Temp.:
20°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
414.96
Key result
Temp.:
40°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
355.68
Key result
Temp.:
40°C
Parameter:
dynamic viscosity (in mPa s)
Value:
405.706
Key result
Temp.:
40°C
Parameter:
dynamic viscosity (in mPa s)
Value:
347.748

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)

1680 sec

 

Time taken to fill 50ml at 40°C

flask in ‘Sec’ (Mean Value)

1440 sec

 

Density of fluid in gm/cc

0.9777 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

= 1680 × 0.247sec

= 414.9600mm²/sec

 

For Test Temperature at 40°C

ν=ct

= 1440 × 0.247sec

= 355.6800 mm²/sec

 

2. Calculation of Dynamic Viscosities:

For Test Temperature at 20°C

ν= η/ρ

414.9600 =η 0.9777

η = 414.9600 x 0.9777

= 405.7063 mPa.S

 

For Test Temperature at 40°C

ν= η/ρ

355.6800 =η/ 0.9777

η = 355.6800 x 0.9777

= 347.7483 mPa.S

Conclusions:
Kinematic viscosity (experimental) of 9,10-Anthracenedione, 1,4-diamino-, N,N'-bis(4-C7-17-branched alkylphenyl) derivs.( CAS No. 97862-23-2)at 20°C and 40°C is 414.9600mm²/secand 355.6800mm²/s,respectively.
Dynamic viscosity (calculated) of 9,10-Anthracenedione, 1,4-diamino-, N,N'-bis(4-C7-17-branched alkylphenyl) derivs.( CAS No. 97862-23-2)at 20°C and 40°C is 405.7063mPa.Sand 347.7483mPa.S,respectively.
Executive summary:

The viscosity determination of Test item 9,10-Anthracenedione, 1,4-diamino-, N,N'-bis(4-C7-17-branched alkylphenyl) derivs. (CAS No. 97862-23-2 )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 414.9600 mm²/sec and 355.6800 mm²/s, respectively. Dynamic viscosity (calculated) of Test item at 20°C and 40°C is 405.7063 mPa.S and 347.7483 mPa.S, respectively.

Description of key information

The viscosity determination of Test item 9,10-Anthracenedione, 1,4-diamino-, N,N'-bis(4-C7-17-branched alkylphenyl) derivs. (CAS No. 97862-23-2 )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 414.9600 mm²/sec and 355.6800 mm²/s, respectively. Dynamic viscosity (calculated) of Test item at 20°C and 40°C is 405.7063 mPa.S and 347.7483 mPa.S, respectively.

Key value for chemical safety assessment

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

Additional information

The viscosity determination of Test item 9,10-Anthracenedione, 1,4-diamino-, N,N'-bis(4-C7-17-branched alkylphenyl) derivs. (CAS No. 97862-23-2 )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 414.9600 mm²/sec and 355.6800 mm²/s, respectively. Dynamic viscosity (calculated) of Test item at 20°C and 40°C is 405.7063 mPa.S and 347.7483 mPa.S, respectively.