1,1,5,5,5-hexamethyl-3,3-bis[(trimethylsilyl)oxy]trisiloxane

Viscosity

Link to relevant study record(s)

Reference

Endpoint:

viscosity

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2017

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study without detailed documentation

Qualifier:

according to guideline

Guideline:

DIN 51562 Part 1 (Viscometry - Measurement of kinematic viscosity by means of the Ubbelohde viscometer - Part 1: Viscometer specification and measurement procedure)

GLP compliance:

no

Remarks:

ISO 9001:2008

Type of method:

other: Ubbelohde viscometer

Key result

Temp.:

20°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

4.72

Test 1

Capillary tube: Ic

Correction factor: 0.02991

Measured time [s]					Mean value [s]
157	157	157	157	157	157

 

Calculation	Viscosity [mm^2/s]
time (mean value) x correction factor = viscosity	4.6959

 

Test 2

Capillary tube: I

Correction factor: 0.009860

Measured time [s]					Mean value [s]
483	483	481	482	481	482

 

Calculation	Viscosity [mm^2/s]
time (mean value) x correction factor = viscosity	4.7525

 

Viscosity at 20 °C [mm^2/s]

4.72

Conclusions:

A measured viscosity value of 4.72 mm2/s at 20 °C was determined using a reliable test method conducted in accordance with a known quality system (ISO 9001:2008). The result is considered to be reliable and is selected as key study.

Description of key information

Viscosity 4.72 mm²/s (DIN 51562)

Key value for chemical safety assessment

Viscosity:

4.72 mm²/s (static)

at the temperature of:

20 °C

Additional information

A measured viscosity value of 4.72 mm²/s at 20 °C was determined for the substance in accordance with DIN 51562 and in compliance with a known quality system (ISO 9001:2008). The result is considered to be reliable and is selected as key study.