Registration Dossier
Registration Dossier
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EC number: 676-712-6 | CAS number: 68890-85-7
Viscosity
Administrative data
Link to relevant study record(s)
- Endpoint:
- viscosity
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2016
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study without detailed documentation
- Qualifier:
- according to guideline
- Guideline:
- other:
- Version / remarks:
- stress-controlled rotational rheometer (Paar-Physica UDS 200) fitted with a concentric cylinder system
- Principles of method if other than guideline:
- The viscosity of the liquids is measured using a stress-controlled rotational rheometer (Paar-Physica UDS 200) fitted with a concentric cylinder system.
- GLP compliance:
- not specified
- Type of method:
- other: "Flowcurv" method
- Remarks:
- rotational rheometer
- Standard covering the apparatus used:
- - MCR300
- Thermal Unit : TEK150P-C
- System Cone-Plate CP25-2 (25mm; 2°)
Samples with low viscosities are measured with a double-gap (22.25/22.75; 23.5/24.0 mm) system whereas high viscosity liquids are measured with a cone plate or single gap (12.5/13.56 mm) device. - Key result
- Temp.:
- other: 23.0°C
- Parameter:
- dynamic viscosity (in mPa s)
- Value:
- 140
- Conclusions:
- Under the study conditions, the viscosity of the test substance was 140 mPa*s ("flowcurv" method - rotational rheometer).
- Executive summary:
A study was conducted to determine the viscosity of the test substance according to the stress-controlled rotational rheometer fitted with a concentric cylinder system ("flowcurv" method). A few measurements were conducted over a shear rate range between 1 and 100 s-1. When the flow was Newtonian (i.e. the viscosity was independent of shear rate), which is usually the case for acrylate resins, the viscosity was returned at 20 or 100 s-1. Under the study conditions, the viscosity of the test substance was determined to be 140 mPa*s (Boutreau, 2016).
Reference
Table 1. Results
| Viscosity 0.1s-1 | Viscosity 1s-1 | Viscosity 10s-1 | Viscosity 100s-1 | Temperature |
| Pa*s | Pa*s | Pa*s | Pa*s | °C |
| 0.14 | 0.14 | 0.14 | 0.14 | 23.0 |
Remark: 1 Pa.s = 1000 cP
Description of key information
The viscosity was determined according to the stress-controlled rotational rheometer fitted with a concentric cylinder system ("flowcurv" method) (Boutreau, 2016)
Key value for chemical safety assessment
- Viscosity:
- 140 mPa · s (dynamic)
- at the temperature of:
- 23 °C
Additional information
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