1-[2-[[4-[(2-chloro-4-nitrophenyl)azo]phenyl]ethylamino]ethyl]pyridinium acetate

Viscosity

Link to relevant study record(s)

Reference

Endpoint:

viscosity

Type of information:

experimental study

Adequacy of study:

key study

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

Qualifier:

according to guideline

Guideline:

OECD Test Guideline 114 (Viscosity of Liquids)

GLP compliance:

no

Type of method:

other: Red Wood Viscometer no. 1

Key result

Temp.:

20°C

Parameter:

dynamic viscosity (in mPa s)

Value:

48.045

Key result

Temp.:

40°C

Parameter:

dynamic viscosity (in mPa s)

Value:

33.52

Key result

Temp.:

20°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

42.484

Key result

Temp.:

40°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

29.64

Observation Table :              

Method Details		Observations
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)	172
	Time taken to fill 50ml at 40°C flask in ‘Sec’ (Mean Value)	120
	Density of fluid in gm/cc	1.1309

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

 

Calculation of Kinematic Viscosities:

For Test Temperature at 20 °C

ν=ct

= 172 × 0.247sec

= 42.4840mm²/sec

For Test Temperature at 40°C

ν=ct

= 120 × 0.247sec

 

= 29.6400 mm²/sec

 

 

Calculation of Dynamic Viscosities:

For Test Temperature at 20°C

ν= η/ρ

42.4840 =η 1.1309

η = 42.4840 x 1.1309

= 48.0451 mPa.S

 

For Test Temperature at 40°C

ν= η/ρ

29.6400 =η/ 1.1309

η = 29.6400 x 1.1309

= 33.5198 mPa.S

Conclusions:

Dynamic viscosity of test chemical was calaculated to be 48.0451 mPa.S at 20°C and 33.5198 mPa.S at 40 °C and kinematic viscosity (experimental) was determined to be 42.4840 mm²/sec at 20°C and 29.6400 mm²/sec at 40°C.

Executive summary:

The viscosity of test chemical was determined as per the test guideline OECD 114 using Redwood Viscometer No. 1

Dynamic viscosity of test chemical  was calculated to be 48.0451 mPa.S at 20°C and 33.5198 mPa.S at 40 °C and kinematic viscosity (experimental) was determined to be 42.4840 mm²/sec at 20°C and 29.6400 mm²/sec at 40°C.

Description of key information

The viscosity of test chemical was determined as per the test guideline OECD 114 using Redwood Viscometer No. 1

Dynamic viscosity of test chemical  was calculated to be 48.0451 mPa.S at 20°C and 33.5198 mPa.S at 40 °C and kinematic viscosity (experimental) was determined to be 42.4840 mm²/sec at 20°C and 29.6400 mm²/sec at 40°C.

Key value for chemical safety assessment

Viscosity:

48.045 mPa · s (dynamic)

at the temperature of:

20 °C

Additional information

The viscosity of test chemical was determined as per the test guideline OECD 114 using Redwood Viscometer No. 1

Dynamic viscosity of test chemical  was calculated to be 48.0451 mPa.S at 20°C and 33.5198 mPa.S at 40 °C and kinematic viscosity (experimental) was determined to be 42.4840 mm²/sec at 20°C and 29.6400 mm²/sec at 40°C.