(1R)-6,6-dimethylbicyclo[3.1.1]hept-2-en-2-ethanol

Viscosity

Link to relevant study record(s)

Reference

Endpoint:

viscosity

Type of information:

experimental study

Adequacy of study:

key study

Study period:

March 2013

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Study performed according to international guidelines but not under GLP and with some lack of details.

Reason / purpose for cross-reference:

reference to other study

Reason / purpose for cross-reference:

reference to same study

Qualifier:

according to guideline

Guideline:

OECD Test Guideline 114 (Viscosity of Liquids)

Deviations:

not specified

GLP compliance:

no

Type of method:

rotational viscometer (dynamic)

Key result

Temp.:

20°C

Parameter:

dynamic viscosity (in mPa s)

Value:

85.1

Remarks on result:

other: shear rate = 583 s-1

Key result

Temp.:

40°C

Parameter:

dynamic viscosity (in mPa s)

Value:

26.5

Remarks on result:

other: shear rate = 583 s-1

Measured values at different shear rate

The results obtained at 20°C were the following:

Viscosities of the test item measured at 20°C:

Shear rate (1/s)	Viscosity (mPa.s)
245	84.6
349.4	84.8
583.1	85.1
971.6	85.0

The results obtained at 40°C were the following:

Viscosities of the test item at 40°C:

Shear rate (1/s)	Viscosity (mPa.s)
583.1	26.5
971.6	26.7
1610	26.8
2705	26.8

The viscosity was constant at all shear rates at both temperatures. The test item was thus considered to be a Newtonian fluid.

Measured values at a constant shear rate

Determination of the viscosity of the test item at a constant shear rate of 583.1 s^-1

Temperature	Viscosity (1st measurement)	Viscosity (2nd measurement)	Viscosity (3rd measurement)
20°C	85.1 mPa.s	85.1 mPa.s	85.1 mPa.s
40°C	26.5 mPa.s	26.5 mPa.s	26.5 mPa.s

Conclusions:

The dynamic viscosity of the test item at 20°C and 40°C ranged between 26.5 to 85.1 mPa.s at a shear rate from 245 to 2705 s-1.
The test item was considered to be a Newtonian fluid.

The dynamic viscosity of nopol was determined to be:
- 85.1 mPa.s at 20°C ± 0.2°C at constant shear rate of 583 s-1,
- 26.5 mPa.s at 40°C ± 0.1°C at constant shear rate of 583 s-1.

Executive summary:

The determination of the viscosity was performed in accordance with OECD Guideline No 114 “Viscosity of liquids” (October 2012) and with Analytical Method DRT 5230 “Determination of dynamic viscosity with a rotary viscometer Haake VT550 or Rheolab QC”.

 

The dynamic viscosity of the test item at 20°C and 40°C ranged between 26.5 to 85.1 mPa.s at shear rates from 245 to 2705 s^-1.

The test item was considered to be a Newtonian fluid.

The dynamic viscosity of nopol was determined to be:

- 85.1 mPa.s at 20.0°C ± 0.2°C at a constant shear rate of 583 s^-1,

- 26.5 mPa.s at 40°C ± 0.1°C at a constant shear rate of 583 s^-1.

Description of key information

The dynamic viscosity was determined with a rotational viscometer.
The substance is a Newtonian fluid.

The dynamic viscosity of nopol at a constant shear rate of 583 s^-1 is 85.1 mPa.s at 20°C and 26.5 mPa.s at 40°C.

Key value for chemical safety assessment

Viscosity:

85.1 mPa · s (dynamic)

at the temperature of:

20 °C

Additional information

Key study conducted according to OECD 114 Guideline. The result is scientifically acceptable but not obtained under GLP. Therefore a reliability of 2 (reliable with restrictions) is assigned.