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EC number: 815-539-4 | CAS number: 1374750-27-2
Viscosity
Administrative data
- 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
- Remarks:
- The study was conducted according to a recognised guideline, but no experimental details are provided. The substance is considered to be adequately identified, with purity. Therefore validation applies with restrictions.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 017
- Report date:
- 2017
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Test Guideline 114 (Viscosity of Liquids)
- 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)
- Qualifier:
- according to guideline
- Guideline:
- DIN 53019 Part 1 (Viscometry - Measurement of viscosities and flow curves by means of rotational viscometers - Part 1: Principles and measuring geometry)
- GLP compliance:
- no
- Type of method:
- rotational viscometer (dynamic)
Test material
- Reference substance name:
- N-[(thiophen-2-yl)methyl]-1H-pyrazol-5-amine
- EC Number:
- 815-539-4
- Cas Number:
- 1374750-27-2
- Molecular formula:
- C8H9N3S
- IUPAC Name:
- N-[(thiophen-2-yl)methyl]-1H-pyrazol-5-amine
- Test material form:
- liquid
Constituent 1
Results and discussion
Viscosityopen allclose all
- Temp.:
- 20°C
- Parameter:
- dynamic viscosity (in mPa s)
- Value:
- 9 345
- Remarks on result:
- other: extrapolated
- Temp.:
- 40°C
- Parameter:
- dynamic viscosity (in mPa s)
- Value:
- 606
- Remarks on result:
- other: measured
Any other information on results incl. tables
Regression:
n(T) = 10exp(A+(B/(t+C)))
A = -0.829097
B = 291.839
C = 40.804
| T (°C) | 30 | 40 | 50 | 60 | 70 | 80 |
| ŋ (mPa.s) | 1962 | 606 | 243 | 116 | 63,8 | 38,6 |
Applicant's summary and conclusion
- Conclusions:
- Viscous liquid. No potential for Aspiration hazard.
- Executive summary:
The dynamic viscosity of the test substance was measured according to ISO3219/DIN53019 standards (listed in OECD 114 guideline), with a rotary viscometer. Measurements were recorded every 10°C between 30 and 60°C, and the regression parameters were determined.
The results, derived from the regression have been calculated to be 606 mPa.s at 40°C, and 9345 mPa.s at 20°C.
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