1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl )-3-pentanone

Viscosity

Link to relevant study record(s)

Reference

Endpoint:

viscosity

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Study was carefully performed using capillary viscometers which in design and use are described in ISO3104 and ISO3105 (per OECD114). It is not known whether the viscometers used in this study are compliant with ISO standards nor whether the study was con

Qualifier:

according to guideline

Guideline:

OECD Test Guideline 114 (Viscosity of Liquids)

GLP compliance:

not specified

Type of method:

capillary viscometer (static)

Temp.:

other: 24.93°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

0.392

Remarks on result:

other: Kinematic viscosities (Table 2) are reported in centistokes. This unit is equivalent to mm2/s.

Experimental values of kinematic viscosity at several temperatures are reported in Table 2. Kinematic viscosity was correlated using the equation

KVisc (cS) = exp(660.0991/(T(°C) + 200) + 3.8731), R2= 0.99971

Table 2, Kinematic viscosity as a function of temperature

Table 2, Kinematic viscosity as a function of temperature
Temperature (°C)	Kinematic viscosity (cS)
-40.00	1.2815
-30.00	1.0140
-20.00	0.8165
-10.00	0.6805
0.00	0.5555
10.00	0.4773
24.93	0.3922
29.74	0.3686
34.66	0.3473
38.62	0.3312

Derived values of kinematic viscosity from the above regression are reported in Table 3. The study report also contains derived values of density at the reported temperatures, and accordingly dynamic viscosities are calculated for this summary using tabulated values of water density.

Table 3, Derived values of kinematic and dynamic viscosity as a function of temperature

Table 3, Derived values of kinematic and dynamic viscosity as a function of temperature
Temperature (°C)	Kinematic Viscosity (cS)	Density of test substance (g/mL)	Density of liquid water^1(g/mL)	Dynamic viscosity (cP)
-40	1.2873	1.7906	N/A	N/A
-30	1.0099	1.7615	N/A	N/A
-20	0.8139	1.7325	N/A	N/A
-10	0.6711	1.7035	N/A	N/A
0	0.5641	1.6744	0.999841	0.9447
10	0.4820	1.6454	0.999700	0.7933
20	0.4178	1.6163	0.998203	0.6765
30	0.3667	1.5873	0.995646	0.5846
40	0.3254	1.5583	N/A	N/A
1, Density of water taken from Handbook of Chemistry and Physics, 53rd Edition, p. F4

Conclusions:

Kinematic viscosity of CAS# 756-13-8 at 24.93 °C is 0.3922 mm2/s.

Executive summary:

The kinematic viscosity of CAS# 756-13-8 was measured at twelve temperatures by capillary viscometry using calibrated Schott-Ubbelohde glass capillary viscometers, along with a Schott AVS350 viscosity timing system and a Lawler temperature control bath. Factory-supplied calibrations were used, and Hagenbach corrections were applied (kinetic energy corrections) using interpolation of table values supplied with the viscometers. The kinematic viscosity of CAS# 756-13-8 at 24.93°C is 0.3922 mm2/s.

 

The study addresses kinematic viscosity directly, and is therefore relevant to the viscosity endpoint. The study was performed using capillary viscometers which in design and use are described in ISO3104 and ISO3105 (per OECD114). It is not known whether the viscometers used in this study are compliant with ISO standards nor whether the study was conducted in accord with GLP guidelines. Therefore the study is classified as acceptable with restrictions.

Description of key information

Key result for CAS # 756-13-8:
Viscosity: 0.3922 mm2/s at 24.93°C.

Key value for chemical safety assessment

Viscosity:

0.392 mm²/s (static)

at the temperature of:

24.93 °C