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EC number: 800-940-9 | CAS number: 35836-72-7
Viscosity
Administrative data
Link to relevant study record(s)
- Endpoint:
- viscosity
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- January 2012
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Remarks:
- Study performed according to international guidelines but not under GLP and with some lack of details.
- Reason / purpose for cross-reference:
- reference to other study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- OECD Test Guideline 114 (Viscosity of Liquids)
- Deviations:
- not specified
- GLP compliance:
- no
- Type of method:
- capillary viscometer (static)
- Key result
- Temp.:
- other: 25.0°C
- Parameter:
- kinematic viscosity (in mm²/s)
- Value:
- 5.19
- Conclusions:
- The kinematic viscosity of nopyl acetate was determined to be 5.190 +/- 0.25 mm²/s at 25°C.
In accordance with Directive 67/548/EEC and CLP Regulation (EC) No 1272/2008, nopyl acetate does not meet the criteria for classification as an aspiration hazard. Although this substance is a low viscosity and mobile liquid, its chemical structure indicates a low potential for surface activity. In addition, there is no evidence of aspiration toxicity for this material from either human experience or from animal toxicity data and it is not a member of a recognized category of materials having aspiration toxicity potential. - Executive summary:
The determination of the kinematic viscosity was performed in accordance with OECD Guideline No 114.
The capillary viscometer was used.
Three measurements were performed at 25°C. The kinematic viscosity of nopyl acetate was determined to be 5.189 mm²/s.
- Endpoint:
- viscosity
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- January 2013
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Study performed according to international guidelines but not under GLP and with some lack of details.
- Reason / purpose for cross-reference:
- reference to other study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- OECD Test Guideline 114 (Viscosity of Liquids)
- Deviations:
- not specified
- GLP compliance:
- no
- Type of method:
- rotational viscometer (dynamic)
- Key result
- Temp.:
- 20°C
- Parameter:
- dynamic viscosity (in mPa s)
- Value:
- 7.7
- Remarks on result:
- other: shear rate = 583 s-1
- Key result
- Temp.:
- 40°C
- Parameter:
- dynamic viscosity (in mPa s)
- Value:
- 5
- Remarks on result:
- other: shear rate = 583 s-1
- Conclusions:
- The dynamic viscosity of the test item at 20°C and 40°C ranged between 4.3 to 8.2 mPa.s at a shear rate from 349 to 1610 s-1.
The test item was considered to be a Newtonian fluid.
The dynamic viscosity of nopyl acetate was determined to be:
- 7.7 mPa.s at 20°C ± 0.2°C at constant shear rate of 583 s-1,
- 5.0 mPa.s at 40°C ± 0.1°C at constant shear rate of 583 s-1.
In accordance with Directive 67/548/EEC and CLP Regulation (EC) No 1272/2008, nopyl acetate does not meet the criteria for classification as an aspiration hazard. Although this substance is a low viscosity and mobile liquid, its chemical structure indicates a low potential for surface activity. In addition, there is no evidence of aspiration toxicity for this material from either human experience or from animal toxicity data and it is not a member of a recognized category of materials having aspiration toxicity potential. - Executive summary:
The determination of the viscosity was performed in accordance with OECD Guideline No 114 and with Analytical Method DRT 5230 “Determination of dynamic viscosity with a rotary viscometer Haake VT550 or Rheolab QC”.
The dynamic viscosity of the test item at 20°C and 40°C ranged between 4.3 to 8.2 mPa.s at shear rates from 349 to 1610 s-1.
The test item was considered to be a Newtonian fluid.
The dynamic viscosity of nopyl acetate was determined to be:
- 7.7 mPa.s at 20.0°C ± 0.2°C at a constant shear rate of 583 s-1,
- 5.0 mPa.s at 40°C ± 0.1°C at a constant shear rate of 583 s-1.
Referenceopen allclose all
Three measurements were carried out at 25°C with the following results:
5.1892 mm²/s
5.1896 mm²/s
5.1898 mm²/s
Mean value: 5.1895 mm²/s
Measured values at different shear rate
The results obtained at 20°C were the following:
Viscosities of the test item measured at 20°C:
| Shear rate (1/s) | Viscosity (mPa.s) |
| 349.4 | 8.2 |
| 583.1 | 7.7 |
| 971.6 | 7.1 |
| 1610 | 6.7 |
The results obtained at 40°C were the following:
Viscosities of the test item at 40°C:
| Shear rate (1/s) | Viscosity (mPa.s) |
| 349.4 | 5.5 |
| 583.1 | 5.0 |
| 971.6 | 4.5 |
| 1610 | 4.3 |
The viscosity was constant at all shear rates at both temperatures. The test item was thus considered to be a Newtonian fluid.
Measured values at a constant shear rate
Determination of the viscosity of the test item at a constant shear rate of 583.1 s-1
| Temperature | Viscosity (1st measurement) | Viscosity (2nd measurement) | Viscosity (3rd measurement) |
| 20°C | 7.6 mPa.s | 7.7 mPa.s | 7.7 mPa.s |
| 40°C | 5.0 mPa.s | 5.0 mPa.s | 5.0 mPa.s |
Description of key information
The dynamic viscosity was determined with a rotational viscometer.
The substance can be considered as a Newtonian fluid.
The dynamic viscosity of nopyl acetate at a shear rate of 583 s-1 is 7.7 mPa.s at 20°C and 5.0 mPa.s at 40°C.
In accordance with Directive 67/548/EEC and CLP Regulation (EC) No 1272/2008, nopyl acetate does not meet the criteria for classification as an aspiration hazard. Although this substance is a low viscosity and mobile liquid, its chemical structure indicates a low potential for surface activity. In addition, there is no evidence of aspiration toxicity for this material from either human experience or from animal toxicity data and it is not a member of a recognized category of materials having aspiration toxicity potential.
Key value for chemical safety assessment
- Viscosity:
- 7.7 mPa · s (dynamic)
- at the temperature of:
- 20 °C
Additional information
Key study conducted according to OECD 114 Guideline.
The result is scientifically acceptable but not obtained under GLP. Therefore a reliability of 2 (reliable with restrictions) was assigned.
A supporting study with a consistent result confirms the key study value.
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