Registration Dossier

Administrative data

Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
key study
Study period:
January 11, 2002
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: see 'Remark'
Remarks:
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 conducted in accord with GLP guidelines.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2002
Report Date:
2002

Materials and methods

Test guideline
Qualifier:
equivalent or similar to
Guideline:
OECD Test Guideline 114 (Viscosity of Liquids)
Principles of method if other than guideline:
Study used 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.
GLP compliance:
not specified
Type of method:
capillary viscometer (static)

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Viscosity
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.

Any other information on results incl. tables

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 water1(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

Applicant's summary and conclusion

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.