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Physical & Chemical properties

Viscosity

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Reference
Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2018.10.31 - 2018.12.28
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Test Guideline 114 (Viscosity of Liquids)
GLP compliance:
no
Other quality assurance:
ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
Type of method:
rotational viscometer (dynamic)
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: GSC171214-111
- Expiration date of the lot/batch: 29. 01. 2020

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: Store at room temperature avoiding direct sunlight
- Stability under test conditions: Stable under the recommended condition
Key result
Temp.:
other: 25
Parameter:
dynamic viscosity (in mPa s)
Value:
>= 128.5 - <= 128.7
Key result
Temp.:
40°C
Parameter:
dynamic viscosity (in mPa s)
Value:
>= 40 - <= 40.2

at 25 °C

Run             Viscosity (mPa·s)

1                  128.7

2                 128.5

3                  128.5

Average       128.6


at 40 °C

Run            Viscosity (mPa·s)

1                 40.2

2                 40.0

3                 40.0

Average      40.1

Conclusions:
Viscosity of 2,3-butanediol ((2R,3S)-rich) was determined to be 128.6 mPa·s at 25 °C and 40.1 mPa·s at 40 °C by rotational viscometer.
Executive summary:

The determination of the viscosity was performed in accordance with OECD guideline no. 114, Viscosity of liquids.

Viscosity of 2,3-butanediol ((2R,3S)-rich) was determined to be 128.6 mPa·s at 25 °C and 40.1 mPa·s at 40 °C by rotational viscometer.

Description of key information

The determination of the viscosity was performed in accordance with OECD guideline no. 114, Viscosity of liquids.

Viscosity of 2,3-butanediol ((2R,3S)-rich) was determined to be 128.6 mPa·s at 25 °C and 40.1 mPa·s at 40 °C by rotational viscometer.

Key value for chemical safety assessment

Viscosity:
128.6 mPa · s (dynamic)
at the temperature of:
25 °C

Additional information

In the available key study the viscosity of 2,3 -butanediol ((2R,3S)-rich) was determined to be 128.6 mPa·s at 25 °C and 40.1 mPa·s at 40°C according to OECD 114. This was corroborated by the supporting study in which dynamic viscosity (μ) were measured by Stabinger viscometer SVM 3000 (Anton paar) at temperature range of 293 - 373K, SD ± 0.01K (20 - 100°C, SD ± 0.01°C). Measured dynamic viscosity was 132.37 mPa·s and 30.504 mPa·s at 20°C and 40°C, respectively, at atmospheric pressure.