Tricarbonyl(methylcyclopentadienyl)manganese

Viscosity

Link to relevant study record(s)

Reference

Endpoint:

viscosity

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2014

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Test Guideline 114 (Viscosity of Liquids)

Deviations:

no

GLP compliance:

yes

Type of method:

rotational viscometer (dynamic)

Key result

Temp.:

20°C

Parameter:

dynamic viscosity (in mPa s)

Value:

5.1

Temp.:

40°C

Parameter:

dynamic viscosity (in mPa s)

Value:

3.3

Viscosity at 20°C:

Reading 1: 5.125 mPas (showing newtonian behaviour across the measured sheer rate of 10 1/s to 311 1/s. The final sheer rate results were excluded as it did not show Newtonian behaviour.)

Reading 2: 5.055 mPas 9 (showing Newtonian behaviour behaviour across the measured shear rate of 10 1/s to 311 1/s. The final sheer rate results was excluded as it did not show Newtonian behaviour)

Mean: 5.1 mPas (showing Newtonian behaviour across the measured sheer rate of 10 1/s to 311 1/s.)

Viscosity at 40°C

Reading 1: 3.386 mPas (showing Newtonian behaviour across the measured sheer rate of 10 1/s to 100 1/s.)

Reading 2: 3.303 mPas (showing Newtonian behaviour across the measured sheer rate of 10 1/s to 100 1/s.)

Mean: 3.3 mPas (showing Newtonian behaviour across the measured sheer rate of 10 1/s to 100 1/s.)

Conclusions:

mmt had a viscosity of 5.1 mPas at 20°C and 3.3 mPas at 40°C (showing Newtonian behaviour across the measured shear rate 10 1/s to 311 1/s at 20°C and 10 1/s to 100 1/s at 40°C).

Executive summary:

The test substance had a viscosity of 5.1 mPa s at 20°C and 3.3 mPa s at 40°C (showing Newtonian behaviour across the measured sheer rate 10 1/s to 311 1/s at 20°C and 10 1/s to 100 1/s at 40°C). The viscosity determination was carried out in accordance with OECD 114 guideline.

Description of key information

The viscosity of mmt is 5.1 mPa s at 20°C and 3.3 mPa -s at 40°C (showing Newtonian behaviour across the measured sheer rate 10 1/s to 311 1/s at 20°C and 10 1/s to 100 1/s at 40°C).

Key value for chemical safety assessment

Viscosity:

3.3 mPa · s (dynamic)

at the temperature of:

20 °C

Additional information

As no reliable human evidence on the aspiration hazard of mmt is available and per the CLP Regulation (EC/1272/2008) the aspiration hazard is based on the kinematic viscosity (dynamic viscosity at 40C in mPa s /density of mmt in g/cm3). The kinematic viscosity is calculated for mmt is 3.7 mm2/s. Per section 3.10.1.6.3, a substance is classified as an aspiration hazard if it is a hydrocarbon and has a kinematic viscosity of 20,5 mm2/s or less, measured at 40C.

Based on CLP specifications the viscosity of mmt would result in a Category 1 Aspiration Classification