1H-Benz[de]isoquinoline-1,3(2H)-dione, 6-amino-, N,N'-bis[mixed 2-ethylhexyl and 3-[(2-ethylhexyl)oxy]propyl] derivs

Viscosity

Administrative data

Endpoint:

viscosity

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2017

Report date:

2017

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Test Guideline 114 (Viscosity of Liquids)

Test guideline 2

Qualifier:

according to guideline

Guideline:

CIPAC MT 192 (Viscosity of liquids by rotational viscometry)

GLP compliance:

yes

Type of method:

rotational viscometer (dynamic)

Test material

Test material information

Constituent 1

Reference substance name:

Raction product of 2-Ethyl-1-hexylamine and 3-(2-Ethylhexyloxy)propylamine with 4-bromo-1,8 naphthalic anhydride

Cas Number:

1971906-58-7

Molecular formula:

Not applicable (UVCB substance)

IUPAC Name:

Raction product of 2-Ethyl-1-hexylamine and 3-(2-Ethylhexyloxy)propylamine with 4-bromo-1,8 naphthalic anhydride

Test material form:

liquid: viscous

Specific details on test material used for the study:

Batch number: 78-242-15

Results and discussion

Viscosity

Viscosity 1

Temp.:

other: 50 °C

Parameter:

dynamic viscosity (in mPa s)

Value:

4 548

Viscosity 2

Temp.:

other: 60°C

Parameter:

dynamic viscosity (in mPa s)

Value:

1 233

Viscosity 3

Temp.:

other: 50*C

Parameter:

kinematic viscosity (in mm²/s)

Value:

6 125

Viscosity 4

Temp.:

other: 60°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

1 660

Any other information on results incl. tables

Calculations

Setting in the Brookfield digital viscometer the cylindrical spindle number and the speed (rpm), the instrument software directly calculates the dynamic viscosity (cP) and shows it in the display of the viscometer.

The Dynamic viscosity (cP) value is calculated by the following formula set in the instrument software:

 

                                   Dynamic viscosity (cP) = F x u

 where:

u         =         Reading value of dynamic viscosity (cP).

F         =         Factor of the specific spindle (pure number).

Kinematic viscosity can be calculated only for Newtonian liquids using the following formula:

                       (u) Kinematic viscosity (cSt) = Dynamic viscosity (cP) / d

 where:

d         =         Density of the sample (g/mL).

Using the basic equation that correlates kinematic viscosity and temperature (ASTM method D341): log[log(u+ 0.7)] = A - B log T

the Kinematic viscosity has been extrapolated at 20°Cfirstly rearranging the above equation, to obtain A and B:

A = log[log(u2 + 0.7)] + B log(T2) 

B = {log[log(u2 + 0.7)] – log[log(u1+0.7)]} / (logT1-logT2)

 

then obtaining the value at 20°C as follows: 

u= 10^{10^[A-B*Log(T)]}-0.7

Applicant's summary and conclusion

Conclusions:

The test item is a Newtonian liquid and its dynamic viscosity does not change with the shear rate. The dynamic viscosity at 20°C is 3.59 x 10E8 cSt (extrapolated value); the kinematic viscosity at 20°C is 2.67 x 10E8 cP (extrapolated value).