Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 949-820-9 | CAS number: -
Viscosity
Administrative data
Link to relevant study record(s)
- Endpoint:
- viscosity
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- From 26 August 2019 to 28 August 2019
- 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:
- not specified
- Qualifier:
- according to guideline
- Guideline:
- CIPAC MT 192 (Viscosity of liquids by rotational viscometry)
- Deviations:
- not specified
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- rotational viscometer (dynamic)
- Key result
- Temp.:
- 20°C
- Parameter:
- other: Dynamic viscosity (Pa.S)
- Value:
- ca. 0.34
- Key result
- Temp.:
- 40°C
- Parameter:
- other: Dynamic viscosity (Pa.S)
- Value:
- ca. 0.01
- Conclusions:
- Under the study conditions, the dynamic viscosity of the test substance was determined to be 0.34 Pa.s and 0.01 Pa.s at 20°C and 40°C, respectively.
- Executive summary:
A study was conducted to determine the dynamic viscosity of the test substance using the rotational viscosimeter according to OECD Guideline 114, in compliance with GLP. The viscosity was determined using rotational viscosimetry using 20 different shear rates in the range from 20 s-1 to 100 s-1 at 20°C and 40°C. The test substance was shaken and afterwards a small sample was taken. For both measurements a cone with a diameter of 50 mm and an angle of 1° was used. The first measurement was performed at 20°C. The second measurement was performed at 40°C. In all measurements the shear stress showed an increasing tendency with increasing shear rates. This indicated a valid measurement. In the measurements at 20°C the shear viscosity showed a significant dependence on the shear rate. At 20°C the test substance behaved like a non-Newtonian liquid. A shear-thinning behaviour could be observed. The test substance was still a suspension after the measurement. In the measurements at 40°C the shear viscosity showed no significant dependence on the shear rate. At 40°C the test substance behaved like a Newtonian liquid. The test substance was a homogeneous liquid after the measurement. The dynamic viscosity was determined with shear rates from 20 s-1 to 100 s-1 to be 0.34 Pa·s at 20°C (start of the measurement (20 s-1)) and 0.01 Pa·s at 40°C. Under the study conditions, the dynamic viscosity of the test substance was determined to be 0.34 Pa.s and 0.01 Pa.s at 20°C and 40°C, respectively (Huber-Lohr, 2019).
Reference
Result
The first measurement was performed at 20°C (see Table 1 and Table 2).
Table1: Shear viscosity with increasing shear rates at 20°C
Shear rate (s-1) |
Temperature (°C) |
Shear stress (Pa) |
Shear viscosity (Pa s) |
20.0 |
20.0 |
6.72 |
0.3361 |
24.2 |
20.0 |
6.78 |
0.2798 |
28.4 |
20.0 |
6.89 |
0.2425 |
32.6 |
20.0 |
7.11 |
0.2177 |
36.8 |
20.0 |
7.54 |
0.2046 |
41.1 |
20.0 |
7.60 |
0.1852 |
45.3 |
20.0 |
7.85 |
0.1735 |
49.5 |
20.0 |
8.01 |
0.1619 |
53.7 |
20.0 |
8.15 |
0.1517 |
57.9 |
20.0 |
8.34 |
0.1441 |
62.1 |
20.0 |
8.59 |
0.1383 |
66.3 |
20.0 |
8.89 |
0.1337 |
70.5 |
20.0 |
9.16 |
0.1298 |
74.7 |
20.0 |
9.40 |
0.1257 |
79.0 |
20.0 |
9.52 |
0.1206 |
83.2 |
20.0 |
9.75 |
0.1172 |
87.4 |
20.0 |
10.10 |
0.1156 |
91.6 |
20.0 |
10.32 |
0.1127 |
95.8 |
20.0 |
10.50 |
0.1096 |
100.0 |
20.0 |
10.75 |
0.1075 |
Table 2: Shear viscosity with decreasing shear rates at 20°C
Shear rate (s-1) |
Temperature (°C) |
Shear stress (Pa) |
Shear viscosity (Pa s) |
100.0 |
20.0 |
10.58 |
0.1058 |
95.8 |
20.0 |
10.21 |
0.1066 |
91.6 |
20.0 |
9.69 |
0.1058 |
87.4 |
20.0 |
9.31 |
0.1066 |
83.2 |
20.0 |
8.97 |
0.1078 |
79.0 |
20.0 |
8.56 |
0.1085 |
74.7 |
20.0 |
8.20 |
0.1097 |
70.5 |
20.0 |
7.81 |
0.1107 |
66.3 |
20.0 |
7.50 |
0.1130 |
62.1 |
20.0 |
7.03 |
0.1132 |
57.9 |
20.0 |
6.66 |
0.1151 |
53.7 |
20.0 |
6.31 |
0.1174 |
49.5 |
20.0 |
5.96 |
0.1204 |
45.3 |
20.0 |
5.62 |
0.1242 |
41.1 |
20.0 |
5.21 |
0.1268 |
36.8 |
20.0 |
4.96 |
0.1347 |
32.6 |
20.0 |
4.63 |
0.1419 |
28.4 |
20.0 |
4.31 |
0.1516 |
24.2 |
20.0 |
3.92 |
0.1620 |
20.0 |
20.0 |
3.59 |
0.1793 |
The second measurement was performed at 40°C (see Table 3 and Table 4).
Table 3: Shear viscosity with increasing shear rates at 40°C
Shear rate (s-1) |
Temperature (°C) |
Shear stress (Pa) |
Shear viscosity (Pa s) |
20.0 |
40.0 |
0.28 |
0.0139 |
24.2 |
40.0 |
0.33 |
0.0138 |
28.4 |
40.0 |
0.40 |
0.0140 |
32.6 |
40.0 |
0.45 |
0.0138 |
36.8 |
40.0 |
0.51 |
0.0138 |
41.1 |
40.0 |
0.57 |
0.0139 |
45.3 |
40.0 |
0.63 |
0.0140 |
49.5 |
40.0 |
0.69 |
0.0140 |
53.7 |
40.0 |
0.75 |
0.0139 |
57.9 |
40.0 |
0.81 |
0.0140 |
62.1 |
40.0 |
0.87 |
0.0140 |
66.3 |
40.0 |
0.93 |
0.0140 |
70.5 |
40.0 |
0.98 |
0.0139 |
74.7 |
40.0 |
1.05 |
0.0140 |
79.0 |
40.0 |
1.10 |
0.0140 |
83.2 |
40.0 |
1.16 |
0.0140 |
87.4 |
40.0 |
1.22 |
0.0139 |
91.6 |
40.0 |
1.28 |
0.0140 |
95.8 |
40.0 |
1.34 |
0.0140 |
100.0 |
40.0 |
1.40 |
0.0140 |
Table 4: Shear viscosity with decreasing shear rates at 40°C
Shear rate (s-1) |
Temperature (°C) |
Shear stress (Pa) |
Shear viscosity (Pa s) |
100.0 |
40.0 |
1.40 |
0.0140 |
95.8 |
40.0 |
1.34 |
0.0140 |
91.6 |
40.0 |
1.28 |
0.0140 |
87.4 |
40.0 |
1.22 |
0.0140 |
83.2 |
40.0 |
1.16 |
0.0140 |
79.0 |
40.0 |
1.10 |
0.0140 |
74.7 |
40.0 |
1.04 |
0.0139 |
70.5 |
40.0 |
0.99 |
0.0140 |
66.3 |
40.0 |
0.93 |
0.0140 |
62.1 |
40.0 |
0.87 |
0.0140 |
57.9 |
40.0 |
0.80 |
0.0139 |
53.7 |
40.0 |
0.75 |
0.0140 |
49.5 |
40.0 |
0.69 |
0.0139 |
45.3 |
40.0 |
0.63 |
0.0140 |
41.1 |
40.0 |
0.57 |
0.0139 |
36.8 |
40.0 |
0.51 |
0.0139 |
32.6 |
40.0 |
0.46 |
0.0140 |
28.4 |
40.0 |
0.40 |
0.0140 |
24.2 |
40.0 |
0.34 |
0.0139 |
20.0 |
40.0 |
0.28 |
0.0141 |
In all measurements the shear stress showed an increasing tendency with increasing shear rates. This indicated a valid measurement. In the measurements at 20°C the shear viscosity showed a significant dependence on the shear rate. At 20 °C the test substance behaved like a non-Newtonian liquid. A shear-thinning behaviour could be observed. The test substance was still a suspension after the measurement. In the measurements at 40°C the shear viscosity showed no significant dependence on the shear rate. At 40 °C the test substance behaved like a Newtonian liquid. The test substance was a homogeneous liquid after the measurement.
The dynamic viscosity was determined with shear rates from 20 s-1 to 100 s-1 to be 0.34 Pa·s at 20°C (start of the measurement (20 s-1)) and 0.01 Pa·s at 40°C.
The unusual behaviour of the test substance showing non-Newtonian liquid properties at 20°C and properties of a Newtonian liquid at 40°C was assumed to result from a melting and/or solving of the particles of the suspension at 40°C. This is in accordance with the optical observations after the measurements (20°C: suspension, 40°C: homogenous liquid).
Final results
The test substance behaved at 20°C like a non-Newtonian liquid and at 40°C like a Newtonian liquid (this different behaviour was most likely caused by melting/solving of the particles of the suspension at 40°C. The dynamic viscosity was determined with shear rates from 20 s-1 to 100 s-1 to be 0.34 Pa·s at 20°C (start of the measurement (20 s-1)) and 0.01 Pa·s at 40°C.
Description of key information
The dynamic viscosity of the test substance was determined using the rotational viscosimeter according to OECD Guideline 114, in compliance with GLP (Huber-Lohr, 2019).
Key value for chemical safety assessment
- Viscosity:
- 340 mPa · s (dynamic)
- at the temperature of:
- 20 °C
Additional information
10 mPa·s at 40°C (dynamic viscosity)
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
