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Registration Dossier
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EC number: 500-446-0 | CAS number: 160901-09-7 1 - 2.5 moles ethoxylated
Viscosity
Administrative data
Link to relevant study record(s)
- Endpoint:
- viscosity
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 13 Apr-09 May 2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- other: CIPAC method MT 22 1994, reprinted 2007
- Principles of method if other than guideline:
- Viscometer
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- capillary viscometer (static)
- Temp.:
- 40°C
- Parameter:
- other: cSt
- Value:
- 11.12
- Remarks on result:
- other: mean of 2 runs
- Temp.:
- other: 60.0°C
- Parameter:
- other: cSt
- Value:
- 6.24
- Remarks on result:
- other: mean of 2 runs
Reference
Full test results
Run |
Temp (°C) |
Viscometer Size |
Calibration Constant |
Time (min) |
Time (secs) |
Viscocity (cSt) |
1 |
20 |
3 |
0.03 |
16:58:78 |
1018.78 |
30.56 |
2 |
20 |
3 |
0.03 |
15:52:54 |
952.54 |
28.58 |
3 |
20 |
3 |
0.03 |
15:34:86 |
934.86 |
28.05 |
4 |
40 |
3 |
0.03 |
06:09:83 |
369.83 |
11.10 |
5 |
40 |
3 |
0.03 |
06:11:48 |
371.48 |
11.14 |
6 |
20 |
3 |
0.03 |
13:15:25 |
795.25 |
23.86 |
7 |
20 |
3 |
0.03 |
14:42:12 |
882.12 |
26.46 |
8 |
20 |
3 |
0.03 |
13:37:49 |
817.49 |
24.52 |
9 |
60 |
3 |
0.03 |
3:27:86 |
207.86 |
6.24 |
10 |
60 |
3 |
0.03 |
3:28:24 |
208.24 |
6.25 |
Testing at 20 °C yielded results that did not fall within the repeatability criteria as stated in the test standard. The material was found to be cloudy and heterogeneous at 20 °C. Four additional runs (runs 3, 6, 7 and 8) were performed which again produced varying results. As the material is a multicomponent substance, it was suspected that the material was separating out and thereby affecting the flow rate of the substance through the viscometer. This problem was not observed at 40 °C. The test was performed at a third temperature, in this case 60 °C, in accordance with the test guidelines.
Description of key information
11.12 cSt at 40 °C (CIPAC Method MT22, capillary method)
6.24 cSt at 60 °C
Key value for chemical safety assessment
Additional information
The viscosity of the substance was determined according to CIPAC method MT22 1994, reprinted 2007, using the capillary method.
Tests were performed at 20 °C, 40 °C and 60 °C. At 20 °C the material was found to be cloudy and heterogeneous, and the test results did not meet the acceptance criteria of the method. As the material is a multicomponent substance, it was suspected that the material was separating out and thereby affecting the flow rate of the substance through the viscometer. This problem was not observed at 40 °C. The test was also performed at 60 °C, in accordance with the test guidelines.
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