Reaction mass of N-(2-ethylhexyl)-1-[[2-methyl-4-[(4-methylphenyl)azo]phenyl]azo]naphthalen-2-amine and N-(2-ethylhexyl)-1-[[2-methyl-4-[(2-methylphenyl)azo]phenyl]azo]naphthalen-1-amine

Viscosity

Link to relevant study record(s)

Reference

Endpoint:

viscosity

Type of information:

experimental study

Adequacy of study:

key study

Study period:

30-08-2017 – 30-08-2017

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.

Qualifier:

according to guideline

Guideline:

OECD Test Guideline 114 (Viscosity of Liquids)

Principles of method if other than guideline:

The viscosity determination of Test item N-(2-ethylhexyl)-1-[[2-methyl-4-[(4-methylphenyl)azo]phenyl]azo]naphthalen-2-amine (CAS No. 93964-07-9) was done as per the test guideline OECD 114 using Redwood Viscometer No. 1.

GLP compliance:

not specified

Type of method:

other: Redwood Viscometer No. 1.

Specific details on test material used for the study:

- Name of the test material: N-(2-ethylhexyl)-1-[[2-methyl-4-[(4-methylphenyl)azo]phenyl]azo]naphthalen-2-amine
- Regulatory name: N-(2-ethylhexyl)-1-[[2-methyl-4-[(4-methylphenyl)azo]phenyl]azo]naphthalen-2-amine
- Molecular formula: C32H37N5
- Molecular weight: 491.6793 g/mol
- Substance type: Organic
- Smiles: CCCCC(CC)CNc1ccc2ccccc2c1/N=N/c3ccc(cc3C)/N=N/c4ccc(cc4)C

Key result

Temp.:

other: 30°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

52.117

Remarks on result:

other: no other details mentioned

Key result

Temp.:

other: 50°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

49.153

Remarks on result:

other: no other details mentioned

Key result

Temp.:

other: 30°C

Parameter:

dynamic viscosity (in mPa s)

Value:

57.214

Remarks on result:

other: no other details mentioned

Key result

Temp.:

other: 50°C

Parameter:

dynamic viscosity (in mPa s)

Value:

53.96

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 was done	30°C and 50°C
Observations	Time taken to fill 50ml flask at 30°C in ‘Sec’ (Mean Value)	211 sec
	Time taken to fill 50ml at 50°C flask in ‘Sec’ (Mean Value)	199 sec
	Density of fluid in gm/cc	1.0978 gm/cc

 

 

CALCULATIONS:

 

ν=ct-----------------------------------------(i)

Where, ν= Kinematic viscosity c= Viscometer constant

t= timeofflowin seconds(Redwoodsecond) ForRedwoodViscometer- I, thevaluesforthe constantsare asbelow:

 

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. Viscosities:

 

For Test Temperature at 30°C ν=ct

= 211 × 0.247sec

 

=  52.1170mm²/sec

 

For Test Temperature at 50°C ν=ct

= 199 × 0.247sec

 

=  49.1530 mm²/sec

1. Viscosities:

 

For Test Temperature at 30°C ν= η/ρ

52.1170 =η 1.0978

 

η = 52.1170 x 1.0978

 

= 57.2140 mPa.S

 

For Test Temperature at 50°C ν= η/ρ

49.1530 =η/ 1.0978

 

η = 49.1530 x 1.0978

 

= 53.9601 mPa.S

 

RESULT:

Sr. No.	Temperature of Test item (°C)	Time taken to fill 50ml flask at 30°C in ‘Sec’ (Mean Value)	Kinematic Viscosity in mm²/sec	Density in gm/cc	Dynamic (or) Absolute Viscosity mPa.S
1.	30°C	211	52.1170	1.0978	57.2140
2.	50°C	199	49.1530	1.0978	53.9601

Conclusions:

Kinematic viscosity (experimental) of N-(2-ethylhexyl)-1-[[2-methyl-4-[(4-methylphenyl)azo]phenyl]azo]naphthalen-2-amine( CAS No. 93964-07-9) at 30°C and 50°C is 52.1170mm²/sec and 49.1530 mm²/s, respectively.
Dynamic viscosity (calculated) of N-(2-ethylhexyl)-1-[[2-methyl-4-[(4-methylphenyl)azo]phenyl]azo]naphthalen-2-amine( CAS No. 93964-07-9)at 30°C and 50°C is 57.2140 mPa.S and 53.9601 mPa.S, respectively.

Executive summary:

The viscosity determination of Test item N-(2-ethylhexyl)-1-[[2-methyl-4-[(4-methylphenyl)azo]phenyl]azo]naphthalen-2-amine (CAS No. 93964-07-9 )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 52.1170 mm²/sec and 49.1530 mm²/s, respectively. Dynamic viscosity (calculated) of Test item at 30°C and 50°C was 57.2140 mPa.S and 53.9601 mPa.S, respectively.

Description of key information

Kinematic viscosity (experimental) of N-(2-ethylhexyl)-1-[[2-methyl-4-[(4-methylphenyl)azo]phenyl]azo]naphthalen-2-amine( CAS No. 93964-07-9) at 30°C and 50°C is 52.1170mm²/sec and 49.1530 mm²/s, respectively.

Dynamic viscosity (calculated) of N-(2-ethylhexyl)-1-[[2-methyl-4-[(4-methylphenyl)azo]phenyl]azo]naphthalen-2-amine( CAS No. 93964-07-9)at 30°C and 50°C is 57.2140 mPa.S and 53.9601 mPa.S, respectively.

Key value for chemical safety assessment

Viscosity:

52.117 mm²/s (static)

at the temperature of:

30 °C

Additional information

The viscosity determination of Test item N-(2-ethylhexyl)-1-[[2-methyl-4-[(4-methylphenyl)azo]phenyl]azo]naphthalen-2-amine (CAS No. 93964-07-9 )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 52.1170 mm²/sec and 49.1530 mm²/s, respectively. Dynamic viscosity (calculated) of Test item at 30°C and 50°C was 57.2140 mPa.S and 53.9601 mPa.S, respectively.