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Physical & Chemical properties

Viscosity

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Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
key study
Study period:
14-Jul-2015
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Qualifier:
according to guideline
Guideline:
other: DIN 51562
GLP compliance:
no
Type of method:
other: Ubbelohde viscosimeter
Temp.:
20°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
1.88

Results

Test: 1

Capillary tube: 0a

Correction factor 0.009665

Measured time [s]

Mean value (s)

195

195

195

195

195

195

 

Calculation

Viscosity (mm2/s)

time (mean value) x correction factor = viscosity

1.8847

 

Test: 2

Capillary tube: I

Correction factor 0.009678

Measured time [s]

Mean value (s)

193

193

193

194

193

193

 

Calculation

Viscosity (mm2/s)

time (mean value) x correction factor = viscosity

1.8679

 

Final result

Viscosity at 20 °C (mm2/s) = 1.88

Conclusions:
A static viscosity of 1.88 mm²/s at 20 °C was determined in a reliable study conducted according to an appropriate test protocol. It was not compliant with GLP.
Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
documentation insufficient for assessment
Principles of method if other than guideline:
Information on method and guideline not stated
GLP compliance:
not specified
Temp.:
other:
Parameter:
dynamic viscosity (in mPa s)
Value:
1.8

No data available for temperature.

Conclusions:
A viscosity value of 1.8 mpa .s (dynamic) was reported for the substance in secondary literature (MSDS). The original reference was not available for review and no further information is available. The reliability of this result is not assignable.

Description of key information

Trimethoxy(2,4,4-trimethylpentyl)silane: 1.88 mm²/s at 20°C (static) (measured)

Key value for chemical safety assessment

Viscosity:
1.88 mm²/s (static)
at the temperature of:
20 °C

Additional information

A kinematic viscosity value of 1.88 mm²/s at 20 °C (static) was determined according to Guideline DIN 51562. This is supported by a measured density value of 1.8 mPa s (dynamic) obtained from a secondary source (MSDS).