Registration Dossier

Physical & Chemical properties

Viscosity

Currently viewing:

Administrative data

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: Non-GLP, experimental study, published in peer reviewed literature, predates implementation of GLP and/or development of study guidelines but otherwise acceptable for assessment
Qualifier:
no guideline followed
Principles of method if other than guideline:
Ostwald Viscometer
GLP compliance:
no
Type of method:
capillary viscometer (static)
Key result
Temp.:
20°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
0.843
Remarks on result:
other: Result reported in cs
Temp.:
other: 50.0°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
0.63
Remarks on result:
other: Result reported in cs
Temp.:
20°C
Parameter:
dynamic viscosity (in mPa s)
Value:
0.727
Remarks on result:
other: Result reported in cp
Temp.:
other: 50.0°C
Parameter:
dynamic viscosity (in mPa s)
Value:
0.528
Remarks on result:
other: Result reported in cp
Conclusions:
The kinematic viscosity of 1, 3, 5-trimethylbenzene was experimentally determined to be 0.843 and 0.630 mm2/s at 20 ºC and 50 ºC, respectively. The dynamic viscosity was determined to 0.727 and 0.528 mPa.s at 20 ºC and 50 ºC, respectively.
Executive summary:

The study has a reliability rating of 2 because the source predates implementation of GLP and development of study guidelines, however the procedure and means of analysis suggest that the methodology was appropriate to evaluate the viscosity of an organic liquid substance. There is otherwise no information in the article to suggest that the data are invalid. The kinematic viscosity of 1, 3, 5-trimethylbenzene was experimentally determined to be 0.843 and 0.630 mm2/s at 20 ºC and 50 ºC, respectively. The dynamic viscosity was determined to 0.727 and 0.528 mPa.s at 20 ºC and 50 ºC, respectively.

Description of key information

The kinematic viscosity of 1,3,5-trimethylbenzene was experimentally determined to be 0.843 and 0.630 mm2/s at 20 ºC and 50 ºC, respectively. The dynamic viscosity was determined to 0.727 and 0.528 mPa.s at  20 ºC and 50 ºC, respectively.

Key value for chemical safety assessment

Viscosity:
0.843 mPa · s (dynamic)
at the temperature of:
20 °C

Additional information

The only reliable experimental study (Boelhouwer 1951) identified is from peer reviewed published literature and so can be considered reliable and suitable for use as the key study for this endpoint.