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Administrative data

Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Oct-Nov.2018
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Remarks:
The study was conducted according to an internationally recognised method. No deviation affected the quality of the study. The substance is adequately characterised, with its composition. Validation applies with restrictions, as non-GLP

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Report date:
2018

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Test Guideline 114 (Viscosity of Liquids)
Version / remarks:
2012
Qualifier:
according to guideline
Guideline:
ISO 3219 (Plastics; polymers/resins in the liquid state or as emulsions or dispersions; determination of viscosity using a rotational viscometer with defined shear rate)
Version / remarks:
1993
GLP compliance:
no
Type of method:
rotational viscometer (dynamic)

Test material

Constituent 1
Chemical structure
Reference substance name:
Carbon tetrachloride
EC Number:
200-262-8
EC Name:
Carbon tetrachloride
Cas Number:
56-23-5
Molecular formula:
CCl4
IUPAC Name:
tetrachloromethane
Constituent 2
Chemical structure
Reference substance name:
Chloroform
EC Number:
200-663-8
EC Name:
Chloroform
Cas Number:
67-66-3
Molecular formula:
CHCl3
IUPAC Name:
chloroform
Constituent 3
Chemical structure
Reference substance name:
1,2-dichloroethane
EC Number:
203-458-1
EC Name:
1,2-dichloroethane
Cas Number:
107-06-2
Molecular formula:
C2H4Cl2
IUPAC Name:
1,2-dichloroethane
Test material form:
liquid
Details on test material:
Appearance : Limpid liquid, colorless
Sampling date : 27/09/2018
Storage Conditions: Ambient temperature in a dark place

Results and discussion

Viscosityopen allclose all
Key result
Temp.:
20°C
Parameter:
dynamic viscosity (in mPa s)
Value:
ca. 1.35
Temp.:
40°C
Remarks on result:
not determinable
Remarks:
evaporates

Any other information on results incl. tables

Measurements at 20.0 °C

The table below provides the results of the two measurements of the dynamic viscosity. Assay 1 is performed by increasing the rotation speed and Assay 2 by decreasing the rotation speed.

 Rotation speed (rpm)

 Shear rate (s-1)

 Assay No. 1

Viscosity (mPa.s)

  Assay No. 2

Viscosity (mPa.s)

 64.0

 78.27

 1.15

 0.67

 66.0

 80.72

 1.17

 0.75

 68.0

 83.16

 1.18

 0.85

 70.0

 85.61

 1.22

 0.92

 72.0

 88.06

 1.22

 1.00

 74.0

 90.50

 1.25

 1.05

 76.0

 92.95

 1.27

 1.12

 78.0

 95.39

 1.28

 1.17

 80.0

 97.84

 1.30

 1.21

 82.0

 100.29

 1.32

 1.25

 84.0

 102.73

 1.33

 1.28

 86.0

 105.18

 1.35

 1.33

 88.0

 107.62

 1.35

 1.38

 90.0

 110.07

 1.38

 1.40

 92.0

 112.52

 1.41

 1.42

 94.0

 114.96

 1.43

 1.44

 96.0

 117.41

 1.43

 1.46

 98.0

 119.85

 1.44

 1.46

 100.0

 122.30

 1.46

 1.47

Viscosity is calculated with consistent results of Assay 1 and 2, in this case with data at rotation speed higher than 76 rpm. The viscosity data retained to determine the mean viscosity must provide standard deviation lower than 10% of the measured value viscosity, considering that in this shear rate range data are generally more reliable at higher shear rate than at low shear rate as adhesion forces of the test item on the device wall is more easely overcome at high shear rate.

The test item was considered to have newtonian properties in the experimental conditions used.

Measurements at 40.0 °C

The test item was too volatile and evaporated in the viscometer cell before the stabilisation of the temperature.

Applicant's summary and conclusion

Conclusions:
Fluid liquid. Potential for Aspiration hazard.
Executive summary:

The dynamic viscosity of the test substance was measured according to OECD 114 / ISO 3219 standard, using a rotational viscometer.

At 20°C, measurements were recorded between 64 and 100 rpm, with both increasing and decreasing shear rate. Results were considered constant, so the average value of 1.35 mm2/s is retained.

At 40°C, no measurement could be performed, due to volatilisation of the test susbstance.

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