4,4'-Isopropylidenediphenol, ethoxylated

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

Qualifier:

according to guideline

Guideline:

OECD Test Guideline 114 (Viscosity of Liquids)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

rotational viscometer (dynamic)

Temp.:

20°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

19 000

Remarks on result:

other: Kinematic viscosity. D = 1 to 100 s^-1

Temp.:

40°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

1 600

Remarks on result:

other: Kinematic viscosity. D = 1 to 500 s^-1

Temp.:

20°C

Parameter:

dynamic viscosity (in mPa s)

Value:

21 000

Remarks on result:

other: Dynamic viscosity. D = 1 to 100 s^-1

Temp.:

40°C

Parameter:

dynamic viscosity (in mPa s)

Value:

1 800

Remarks on result:

other: Dynamic viscosity. D = 1 to 500 s^-1

Viscosity determined at 20°C

Shear rate (D) [1/s]	Dynamic Viscosity* Mean [mPa.s]	Kinematic Viscosity** Mean [mm^2/s]
1.0	21460	18553
2.5	21500	18587
5.0	21533	18616
10	21503	18590
25	21437	18533
50	21340	18449
100	21063	18210
Mean	21000	19000

* Mean values from 2 determinations

** Calculated from unrounded dynamic viscosity values with a density of the test item of ρ = 1.1567 g/cm³(measured with an oscillating densitometer)

Estimated accuracy: ± 5%

Viscosity determined at 40°C

Shear rate (D) [1/s]	Dynamic Viscosity* Mean [mPa.s]	Kinematic Viscosity** Mean [mm^2/s]
1.0	1787	1565
2.5	1790	1568
5.0	1789	1567
10	1793	1570
25	1794	1571
50	1796	1573
100	1795	1572
250	1789	1566
500	1774	1554
Mean	1800	1600

* Mean values from 2 determinations

** Calculated from unrounded dynamic viscosity values with a density of the test item of ρ = 1.1194 g/cm³(measured with an oscillating densitometer)

Estimated accuracy: ± 5%

Conclusions:

The kinematic viscosity was found to be 19000 mm2/s at 20°C and D (shear rate) = 1 to 100 s-1, and 1600 mm2/s at 40°C and D = 1 to 500 s-1. The dynamic viscosity was found to be 21000 mPa.s at 20°C and D = 1 to 100 s-1, and 1800 mPa.s at 40°C and D = 1 to 500 s-1.

Executive summary:

The viscosity of the test substance was determined in accordance with the OECD Guideline for Testing of Chemicals 114. The dynamic viscosity was measured using the rotational viscosimetry method, with the kinematic viscosity calculated using the dynamic viscosity and the densities. The kinematic viscosity was found to be 19000 mm2/s at 20°C and D (shear rate) = 1 to 100 s-1, and 1600 mm2/s at 40°C and D = 1 to 500 s-1. The dynamic viscosity was found to be 21000 mPa.s at 20°C and D = 1 to 100 s-1, and 1800 mPa.s at 40°C and D = 1 to 500 s-1.

Description of key information

The dynamic viscosity of the test substance was found to be 21000 mPa.s at 20°C and 1800 mPa.s at 40°C. Using the dynamic viscosity and the densities the kinematic viscosity was calculated as 19000 mm^2/s at 20°C and 1600 mm^2/s at 40°C.

Key value for chemical safety assessment

Viscosity:

21 000 mPa · s (dynamic)

at the temperature of:

20 °C

Additional information

A study was conducted to assess the viscosity of the test substance. The study was considered reliable as it was conducted on the registered substance according to OECD Testing Guideline 114. The dynamic viscosity of the test substance was found to be 21000 mPa.s at 20°C and 1800 mPa.s at 40°C. Using the dynamic viscosity and the densities the kinematic viscosity was calculated as 19000 mm²/s at 20°C and 1600 mm²/s at 40°C.