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EC number: 288-315-1 | CAS number: 85711-55-3
Viscosity
Administrative data
Link to relevant study record(s)
- Endpoint:
- viscosity
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Test Guideline 114 (Viscosity of Liquids)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- rotational viscometer (dynamic)
- Key result
- Temp.:
- 20°C
- Parameter:
- dynamic viscosity (in mPa s)
- Value:
- ca. 10 000 - ca. 90 000
- Remarks on result:
- other: dependent on shear rate
- Temp.:
- 40°C
- Parameter:
- dynamic viscosity (in mPa s)
- Value:
- 200
- Remarks on result:
- other: independent of shear rate
Reference
At 20 °C, the test material shows a significant decrease in viscosity with increasing spindle speed (shear rate), while at 40 °C there is insignificant change in viscosity with shear rate (see Tables 1 and 2).
Table 1: Determination of viscosity at varied spindle speed at 20 °C
Spindle speed (rpm) |
Viscosity (mPa.s) |
|
|
Sample A |
Sample B |
0.30 |
90500 |
91500 |
0.50 |
60400 |
61200 |
0.60 |
52170 |
53000 |
1.00 |
34050 |
34550 |
1.50 |
24100 |
24530 |
2.00 |
18780 |
19180 |
2.50 |
15480 |
15820 |
3.00 |
13250 |
13570 |
4.00 |
10580 |
10840 |
5.00 |
8890 |
9110 |
5.00 |
8450 |
8680 |
4.00 |
9613 |
9900 |
3.00 |
11530 |
11900 |
2.50 |
13080 |
13500 |
2.00 |
15300 |
15830 |
1.50 |
18830 |
19530 |
1.00 |
25600 |
26700 |
0.60 |
38330 |
40250 |
0.50 |
45300 |
47500 |
0.30 |
69500 |
73330 |
Table 2: Determination of viscosity at varied spindle speed at 40 °C
Spindle speed (rpm) |
Viscosity (mPa.s) |
|
|
Sample A |
Sample B |
20.0 |
205.0 |
202.5 |
50.0 |
205.0 |
204.0 |
100 |
205.0 |
204.0 |
50.0 |
205.0 |
204.0 |
20.0 |
205.0 |
202.5 |
Description of key information
10000-90000 mPa.s at 20°C and 200 mPa.s at 40°C (OECD 114)
Key value for chemical safety assessment
Additional information
Viscosity was dependent on shear rate at 20 °C and independent at 40°C.
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