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EC number: 701-357-1 | CAS number: -
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Water solubility
Administrative data
Link to relevant study record(s)
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 13 February 2019
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- other: OECD Guideline 115: Surface Tension of Aqueous Solutions
- Version / remarks:
- 27 July 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: EU Method A5: Surface tension
- Version / remarks:
- 30 May 2008
- Deviations:
- no
- Principles of method if other than guideline:
- Below the CMC, a surfactant is considered to be thermodynamically soluble in the water; whereas above the CMC, the solubility of a surfactant in water has been exceeded and the excess surfactant aggregates to form micelles. These micelles have significantly less effect on the surface tension of a solution and are considered not to be in solution. Thus, the water solubility of a surfactant may be expressed in terms of the CMC.
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- other: by determining the surface tension of a range of aqueous sample solutions of differing concentration
- Key result
- Water solubility:
- ca. 4 500 mg/L
- Conc. based on:
- test mat.
- Remarks:
- Water solubility determined as CMC
- Incubation duration:
- ca. 67 - ca. 232 min
- Temp.:
- 20 °C
- Remarks on result:
- other: equivalent to 1782 mg a.i./L
- Details on results:
- Please see below table.
- Conclusions:
- Under the study conditions, the water solubility as CMC of the test substance was determined to be 4500 mg/L (equivalent to 1782 mg a.i./L) at 20°C.
- Executive summary:
A study was conducted to determined the water solubility of the test substance, C12 -14 HEDMAC ( 39.6% active) based on critical micelle concentration (CMC), according to OECD Guideline 115 and EU Method A.5, in compliance with GLP. Due to the surface activity of the test substance, the CMC value was considered as a water soluibility equivalent in accordance with the ECHA R.7a Guidance. Under the study conditions, the CMC or water solubility of the test substance was determined to be 4500 mg/L (equivalent to 1782 mg a.i./L) at 20°C (Krebs, 2019).
Reference
Findings and results
Findings ReferenceTest
Water, HPLC grade, Lot I2760_8 was measured.
The following values were recorded:
Measured Values NegativeControl
Measurement |
Time |
Mass |
Surface Tension |
Temperature |
No |
s |
g |
mN/m |
°C |
1 |
4.2 |
0.2985 |
72.82 |
20.5 |
2 |
5.1 |
0.2979 |
72.67 |
20.5 |
3 |
6.1 |
0.2976 |
72.60 |
20.5 |
4 |
7.1 |
0.2978 |
72.65 |
20.5 |
5 |
8.1 |
0.2977 |
72.62 |
20.5 |
6 |
9.1 |
0.2975 |
72.57 |
20.4 |
7 |
10.1 |
0.2960 |
72.21 |
20.4 |
8 |
11.1 |
0.2972 |
72.50 |
20.4 |
9 |
12.1 |
0.2976 |
72.60 |
20.4 |
10 |
13.1 |
0.2976 |
72.60 |
20.4 |
Mean |
72.58 |
|
||
Standard Deviation |
0.16 |
|
Findings Main Test
The test substance solutions were held at constant temperature (20.0 ± 0.4 °C). 180 ± 23 min. (see chapter7.3) after conclusion of the first measurement series, a second measurement series was performed for confirmation purposes.
The following values were recorded:
Measured Values Test Substance First Series 100 mg/L test substance (39.6 mg/L active ingredient)
Measurement |
Time |
Mass |
Surface Tension |
Temperature |
No |
s |
g |
mN/m |
°C |
1 |
4.2 |
0.2924 |
71.33 |
20.0 |
2 |
5.1 |
0.2892 |
70.55 |
20.0 |
3 |
6.2 |
0.2885 |
70.38 |
20.0 |
4 |
7.1 |
0.2885 |
70.38 |
20.0 |
5 |
8.1 |
0.2885 |
70.38 |
20.0 |
6 |
9.1 |
0.2884 |
70.35 |
20.0 |
7 |
10.1 |
0.2886 |
70.40 |
20.0 |
8 |
11.1 |
0.2884 |
70.35 |
20.0 |
9 |
12.2 |
0.2889 |
70.48 |
20.0 |
10 |
13.1 |
0.2883 |
70.33 |
20.0 |
Mean |
70.49 |
|
||
Standard Deviation |
0.30 |
|
Measured Values Test Substance Second Series 100 mg/L test substance (39.6 mg/L active ingredient)
Measurement |
Time |
Mass |
Surface Tension |
Temperature |
No |
s |
g |
mN/m |
°C |
1 |
4.2 |
0.2908 |
70.94 |
20.1 |
2 |
5.2 |
0.2873 |
70.09 |
20.1 |
3 |
6.2 |
0.2866 |
69.92 |
20.1 |
4 |
7.2 |
0.2864 |
69.87 |
20.1 |
5 |
8.2 |
0.2861 |
69.79 |
20.1 |
6 |
9.2 |
0.2861 |
69.79 |
20.1 |
7 |
10.2 |
0.2865 |
69.89 |
20.1 |
8 |
11.2 |
0.2863 |
69.84 |
20.1 |
9 |
12.2 |
0.2862 |
69.82 |
20.1 |
10 |
13.2 |
0.2861 |
69.79 |
20.1 |
Mean |
69.97 |
|
||
Standard Deviation |
0.35 |
|
Measured Values Test Substance First Series 500 mg/L test substance (198 mg/L activeingredient)
Measurement |
Time |
Mass |
Surface Tension |
Temperature |
No |
s |
g |
mN/m |
°C |
1 |
4.2 |
0.2501 |
61.01 |
20.3 |
2 |
5.1 |
0.2473 |
60.33 |
20.2 |
3 |
6.1 |
0.2455 |
59.89 |
20.3 |
4 |
7.1 |
0.2452 |
59.82 |
20.3 |
5 |
8.1 |
0.2449 |
59.74 |
20.3 |
6 |
9.1 |
0.2449 |
59.74 |
20.3 |
7 |
10.1 |
0.2446 |
59.67 |
20.3 |
8 |
11.1 |
0.2441 |
59.55 |
20.3 |
9 |
12.1 |
0.2442 |
59.57 |
20.3 |
10 |
13.1 |
0.2440 |
59.52 |
20.3 |
Mean |
59.88 |
|
||
Standard Deviation |
0.46 |
|
Measured Values Test Substance Second Series 500 mg/L test substance (198 mg/L activeingredient)
Measurement |
Time |
Mass |
Surface Tension |
Temperature |
No |
s |
g |
mN/m |
°C |
1 |
4.1 |
0.2360 |
57.57 |
20.1 |
2 |
5.1 |
0.2330 |
56.84 |
20.1 |
3 |
6.1 |
0.2315 |
56.47 |
20.1 |
4 |
7.1 |
0.2307 |
56.28 |
20.1 |
5 |
8.1 |
0.2304 |
56.21 |
20.1 |
6 |
9.1 |
0.2300 |
56.11 |
20.1 |
7 |
10.1 |
0.2297 |
56.03 |
20.1 |
8 |
11.1 |
0.2297 |
56.03 |
20.1 |
9 |
12.1 |
0.2295 |
55.99 |
20.1 |
10 |
13.1 |
0.2292 |
55.91 |
20.1 |
Mean |
56.34 |
|
||
Standard Deviation |
0.51 |
|
MeasuredValuesTestSubstanceFirstSeries1000mg/Ltestsubstance(396mg/Lactiveingredient)
Measurement |
Time |
Mass |
Surface Tension |
Temperature |
No |
s |
g |
mN/m |
°C |
1 |
4.1 |
0.2026 |
49.42 |
20.3 |
2 |
5.1 |
0.2003 |
48.86 |
20.3 |
3 |
6.1 |
0.1989 |
48.52 |
20.3 |
4 |
7.1 |
0.1977 |
48.23 |
20.3 |
5 |
8.1 |
0.1970 |
48.06 |
20.3 |
6 |
9.1 |
0.1961 |
47.84 |
20.3 |
7 |
10.1 |
0.1962 |
47.86 |
20.4 |
8 |
11.2 |
0.1957 |
47.74 |
20.4 |
9 |
12.1 |
0.1957 |
47.74 |
20.4 |
10 |
13.1 |
0.1954 |
47.67 |
20.4 |
Mean |
48.19 |
|
||
Standard Deviation |
0.58 |
|
Measured Values Test Substance Second Series 1000 mg/L test substance (396 mg/L activeingredient)
Measurement |
Time |
Mass |
Surface Tension |
Temperature |
No |
s |
g |
mN/m |
°C |
1 |
4.2 |
0.2043 |
49.84 |
20.2 |
2 |
5.1 |
0.2020 |
49.28 |
20.2 |
3 |
6.1 |
0.2008 |
48.98 |
20.2 |
4 |
7.1 |
0.1996 |
48.69 |
20.2 |
5 |
8.1 |
0.1984 |
48.40 |
20.2 |
6 |
9.1 |
0.1983 |
48.37 |
20.2 |
7 |
10.1 |
0.1978 |
48.25 |
20.2 |
8 |
11.1 |
0.1974 |
48.16 |
20.2 |
9 |
12.1 |
0.1973 |
48.13 |
20.2 |
10 |
13.1 |
0.1971 |
48.08 |
20.2 |
Mean |
48.62 |
|
||
Standard Deviation |
0.58 |
|
MeasuredValuesTestSubstanceFirstSeries2500mg/Ltestsubstance(990mg/Lactiveingredient)
Measurement |
Time |
Mass |
Surface Tension |
Temperature |
No |
s |
g |
mN/m |
°C |
1 |
4.2 |
0.1451 |
35.40 |
20.2 |
2 |
5.1 |
0.1418 |
34.59 |
20.2 |
3 |
6.2 |
0.1407 |
34.32 |
20.2 |
4 |
7.1 |
0.1401 |
34.18 |
20.2 |
5 |
8.1 |
0.1394 |
34.01 |
20.2 |
6 |
9.1 |
0.1387 |
33.84 |
20.2 |
7 |
10.1 |
0.1383 |
33.74 |
20.2 |
8 |
11.1 |
0.1379 |
33.64 |
20.2 |
9 |
12.2 |
0.1373 |
33.49 |
20.2 |
10 |
13.1 |
0.1371 |
33.45 |
20.2 |
Mean |
34.06 |
|
||
Standard Deviation |
0.59 |
|
Measured Values Test Substance Second Series 2500 mg/L test substance (990 mg/L activeingredient)
Measurement |
Time |
Mass |
Surface Tension |
Temperature |
No |
s |
g |
mN/m |
°C |
1 |
4.2 |
0.1519 |
37.06 |
20.4 |
2 |
5.2 |
0.1501 |
36.62 |
20.4 |
3 |
6.2 |
0.1500 |
36.59 |
20.4 |
4 |
7.1 |
0.1494 |
36.45 |
20.4 |
5 |
8.2 |
0.1489 |
36.32 |
20.4 |
6 |
9.1 |
0.1480 |
36.10 |
20.4 |
7 |
10.2 |
0.1480 |
36.10 |
20.4 |
8 |
11.1 |
0.1478 |
36.06 |
20.4 |
9 |
12.2 |
0.1475 |
35.98 |
20.4 |
10 |
13.1 |
0.1471 |
35.88 |
20.4 |
Mean |
36.32 |
|
||
Standard Deviation |
0.36 |
|
MeasuredValuesTestSubstanceFirstSeries4000mg/Ltestsubstance(1584mg/Lactiveingredient)
Measurement |
Time |
Mass |
Surface Tension |
Temperature |
No |
s |
g |
mN/m |
°C |
1 |
4.1 |
0.1394 |
34.01 |
20.3 |
2 |
5.1 |
0.1378 |
33.62 |
20.3 |
3 |
6.1 |
0.1375 |
33.54 |
20.3 |
4 |
7.1 |
0.1374 |
33.52 |
20.4 |
5 |
8.1 |
0.1373 |
33.49 |
20.4 |
6 |
9.1 |
0.1370 |
33.42 |
20.4 |
7 |
10.1 |
0.1372 |
33.47 |
20.4 |
8 |
11.1 |
0.1367 |
33.35 |
20.4 |
9 |
12.1 |
0.1368 |
33.37 |
20.4 |
10 |
13.1 |
0.1367 |
33.35 |
20.4 |
Mean |
33.51 |
|
||
Standard Deviation |
0.19 |
|
Measured Values Test Substance Second Series 4000 mg/L test substance (1584 mg/L active ingredient)
Measurement |
Time |
Mass |
Surface Tension |
Temperature |
No |
s |
g |
mN/m |
°C |
1 |
4.1 |
0.1350 |
32.93 |
20.2 |
2 |
5.2 |
0.1333 |
32.52 |
20.2 |
3 |
6.1 |
0.1329 |
32.42 |
20.2 |
4 |
7.2 |
0.1328 |
32.40 |
20.2 |
5 |
8.1 |
0.1328 |
32.40 |
20.2 |
6 |
9.2 |
0.1327 |
32.37 |
20.2 |
7 |
10.2 |
0.1325 |
32.32 |
20.2 |
8 |
11.2 |
0.1323 |
32.27 |
20.2 |
9 |
12.1 |
0.1324 |
32.30 |
20.2 |
10 |
13.2 |
0.1324 |
32.30 |
20.2 |
Mean |
32.42 |
|
||
Standard Deviation |
0.19 |
|
MeasuredValuesTestSubstanceFirstSeries4500mg/Ltestsubstance(1782mg/Lactiveingredient)
Measurement |
Time |
Mass |
Surface Tension |
Temperature |
No |
s |
g |
mN/m |
°C |
1 |
4.2 |
0.1383 |
33.74 |
20.3 |
2 |
5.1 |
0.1350 |
32.93 |
20.3 |
3 |
6.1 |
0.1346 |
32.84 |
20.3 |
4 |
7.1 |
0.1346 |
32.84 |
20.3 |
5 |
8.1 |
0.1336 |
32.59 |
20.3 |
6 |
9.1 |
0.1338 |
32.64 |
20.3 |
7 |
10.1 |
0.1341 |
32.71 |
20.3 |
8 |
11.1 |
0.1338 |
32.64 |
20.3 |
9 |
12.2 |
0.1337 |
32.62 |
20.3 |
10 |
13.1 |
0.1338 |
32.64 |
20.3 |
Mean |
32.82 |
|
||
Standard Deviation |
0.34 |
|
Measured Values Test Substance Second Series 4500 mg/L test substance (1782 mg/L active ingredient)
Measurement |
Time |
Mass |
Surface Tension |
Temperature |
No |
s |
g |
mN/m |
°C |
1 |
4.1 |
0.1348 |
32.88 |
20.3 |
2 |
5.0 |
0.1318 |
32.15 |
20.3 |
3 |
6.1 |
0.1311 |
31.98 |
20.3 |
4 |
7.0 |
0.1303 |
31.79 |
20.3 |
5 |
8.1 |
0.1302 |
31.76 |
20.3 |
6 |
9.0 |
0.1297 |
31.64 |
20.3 |
7 |
10.1 |
0.1294 |
31.57 |
20.3 |
8 |
11.0 |
0.1295 |
31.59 |
20.3 |
9 |
12.1 |
0.1288 |
31.42 |
20.3 |
10 |
13.0 |
0.1284 |
31.32 |
20.3 |
Mean |
31.81 |
|
||
Standard Deviation |
0.45 |
|
MeasuredValuesTestSubstanceFirstSeries5000mg/Ltestsubstance(1980mg/Lactiveingredient)
Measurement |
Time |
Mass |
Surface Tension |
Temperature |
No |
s |
g |
mN/m |
°C |
1 |
4.2 |
0.1392 |
33.96 |
20.1 |
2 |
5.1 |
0.1366 |
33.32 |
20.1 |
3 |
6.2 |
0.1361 |
33.20 |
20.1 |
4 |
7.1 |
0.1363 |
33.25 |
20.1 |
5 |
8.1 |
0.1362 |
33.23 |
20.1 |
6 |
9.1 |
0.1362 |
33.23 |
20.1 |
7 |
10.1 |
0.1357 |
33.10 |
20.1 |
8 |
11.1 |
0.1359 |
33.15 |
20.1 |
9 |
12.2 |
0.1358 |
33.13 |
20.1 |
10 |
13.1 |
0.1356 |
33.08 |
20.1 |
Mean |
33.26 |
|
||
Standard Deviation |
0.25 |
|
Measured Values Test Substance Second Series 5000 mg/L test substance (1980 mg/L active ingredient)
Measurement |
Time |
Mass |
Surface Tension |
Temperature |
No |
s |
g |
mN/m |
°C |
1 |
4.2 |
0.1394 |
34.01 |
20.1 |
2 |
5.1 |
0.1380 |
33.66 |
20.1 |
3 |
6.2 |
0.1378 |
33.62 |
20.1 |
4 |
7.1 |
0.1378 |
33.62 |
20.1 |
5 |
8.1 |
0.1374 |
33.52 |
20.1 |
6 |
9.1 |
0.1372 |
33.47 |
20.1 |
7 |
10.1 |
0.1373 |
33.49 |
20.1 |
8 |
11.1 |
0.1374 |
33.52 |
20.1 |
9 |
12.2 |
0.1374 |
33.52 |
20.1 |
10 |
13.1 |
0.1374 |
33.52 |
20.1 |
Mean |
33.59 |
|
||
Standard Deviation |
0.16 |
|
MeasuredValuesTestSubstanceFirstSeries5500mg/Ltestsubstance(2178mg/Lactiveingredient)
Measurement |
Time |
Mass |
Surface Tension |
Temperature |
No |
s |
g |
mN/m |
°C |
1 |
4.2 |
0.1405 |
34.27 |
20.0 |
2 |
5.1 |
0.1388 |
33.86 |
20.0 |
3 |
6.2 |
0.1402 |
34.20 |
20.0 |
4 |
7.1 |
0.1388 |
33.86 |
20.0 |
5 |
8.1 |
0.1385 |
33.79 |
20.0 |
6 |
9.1 |
0.1384 |
33.76 |
20.0 |
7 |
10.1 |
0.1376 |
33.57 |
20.0 |
8 |
11.2 |
0.1386 |
33.81 |
20.0. |
9 |
12.2 |
0.1382 |
33.71 |
20.0 |
10 |
13.1 |
0.1381 |
33.69 |
20.0 |
Mean |
33.85 |
|
||
Standard Deviation |
0.22 |
|
Measured Values Test Substance Second Series 5500 mg/L test substance (2178 mg/L active ingredient)
Measurement |
Time |
Mass |
Surface Tension |
Temperature |
No |
s |
g |
mN/m |
°C |
1 |
4.1 |
0.1416 |
34.54 |
20.1 |
2 |
5.1 |
0.1406 |
34.30 |
20.1 |
3 |
6.1 |
0.1403 |
34.23 |
20.1 |
4 |
7.1 |
0.1402 |
34.20 |
20.1 |
5 |
8.1 |
0.1399 |
34.13 |
20.1 |
6 |
9.1 |
0.1398 |
34.10 |
20.1 |
7 |
10.1 |
0.1397 |
34.08 |
20.1 |
8 |
11.1 |
0.1397 |
34.08 |
20.1 |
9 |
12.1 |
0.1397 |
34.08 |
20.1 |
10 |
13.1 |
0.1396 |
34.05 |
20.1 |
Mean |
34.18 |
|
||
Standard Deviation |
0.15 |
|
MeasuredValuesTestSubstanceFirstSeries6000mg/Ltestsubstance(2376mg/Lactiveingredient)
Measurement |
Time |
Mass |
Surface Tension |
Temperature |
No |
s |
g |
mN/m |
°C |
1 |
4.2 |
0.1416 |
34.54 |
20.3 |
2 |
5.1 |
0.1404 |
34.25 |
20.3 |
3 |
6.1 |
0.1404 |
34.25 |
20.3 |
4 |
7.1 |
0.1401 |
34.18 |
20.3 |
5 |
8.1 |
0.1402 |
34.20 |
20.3 |
6 |
9.1 |
0.1403 |
34.23 |
20.3 |
7 |
10.1 |
0.1402 |
34.20 |
20.3 |
8 |
11.1 |
0.1402 |
34.20 |
20.4 |
9 |
12.1 |
0.1400 |
34.15 |
20.4 |
10 |
13.1 |
0.1401 |
34.18 |
20.4 |
Mean |
34.24 |
|
||
Standard Deviation |
0.11 |
|
Measured Values Test Substance Second Series 6000 mg/L test substance (2376 mg/L active ingredient)
Measurement |
Time |
Mass |
Surface Tension |
Temperature |
No |
s |
g |
mN/m |
°C |
1 |
4.1 |
0.1420 |
34.64 |
20.3 |
2 |
5.1 |
0.1407 |
34.32 |
20.3 |
3 |
6.1 |
0.1404 |
34.25 |
20.3 |
4 |
7.1 |
0.1404 |
34.25 |
20.3 |
5 |
8.1 |
0.1406 |
34.30 |
20.3 |
6 |
9.1 |
0.1406 |
34.30 |
20.3 |
7 |
10.1 |
0.1405 |
34.27 |
20.3 |
8 |
11.1 |
0.1404 |
34.25 |
20.3 |
9 |
12.1 |
0.1405 |
34.27 |
20.3 |
10 |
13.1 |
0.1403 |
34.23 |
20.3 |
Mean |
34.31 |
|
||
Standard Deviation |
0.12 |
|
MeasuredValuesTestSubstanceFirstSeries7500mg/Ltestsubstance(2970mg/Lactiveingredient)
Measurement |
Time |
Mass |
Surface Tension |
Temperature |
No |
s |
g |
mN/m |
°C |
1 |
4.2 |
0.1505 |
36.71 |
20.3 |
2 |
5.2 |
0.1495 |
36.47 |
20.3 |
3 |
6.1 |
0.1496 |
36.49 |
20.3 |
4 |
7.1 |
0.1493 |
36.42 |
20.3 |
5 |
8.1 |
0.1489 |
36.32 |
20.3 |
6 |
9.1 |
0.1491 |
36.37 |
20.3 |
7 |
10.1 |
0.1492 |
36.40 |
20.3 |
8 |
11.1 |
0.1492 |
36.40 |
20.3 |
9 |
12.1 |
0.1492 |
36.40 |
20.3 |
10 |
13.1 |
0.1490 |
36.35 |
20.3 |
Mean |
36.43 |
|
||
Standard Deviation |
0.11 |
|
Measured Values Test Substance Second Series 7500 mg/L test substance (2970 mg/L active ingredient)
Measurement |
Time |
Mass |
Surface Tension |
Temperature |
No |
s |
g |
mN/m |
°C |
1 |
4.1 |
0.1474 |
35.96 |
20.1 |
2 |
5.1 |
0.1464 |
35.71 |
20.1 |
3 |
6.1 |
0.1464 |
35.71 |
20.1 |
4 |
7.1 |
0.1461 |
35.64 |
20.1 |
5 |
8.1 |
0.1462 |
35.66 |
20.1 |
6 |
9.1 |
0.1461 |
35.64 |
20.1 |
7 |
10.1 |
0.1459 |
35.59 |
20.1 |
8 |
11.1 |
0.1459 |
35.59 |
20.1 |
9 |
12.1 |
0.1457 |
35.54 |
20.1 |
10 |
13.1 |
0.1460 |
35.62 |
20.1 |
Mean |
35.67 |
|
||
Standard Deviation |
0.12 |
|
MeasuredValuesTestSubstanceFirstSeries10000mg/Ltestsubstance(3960mg/Lactiveingredient)
Measurement |
Time |
Mass |
Surface Tension |
Temperature |
No |
s |
g |
mN/m |
°C |
1 |
4.2 |
0.1570 |
38.30 |
20.2 |
2 |
5.2 |
0.1556 |
37.96 |
20.2 |
3 |
6.2 |
0.1556 |
37.96 |
20.2 |
4 |
7.2 |
0.1552 |
37.86 |
20.2 |
5 |
8.2 |
0.1556 |
37.96 |
20.2 |
6 |
9.2 |
0.1556 |
37.96 |
20.2 |
7 |
10.2 |
0.1555 |
37.93 |
20.2 |
8 |
11.2 |
0.1557 |
37.98 |
20.2 |
9 |
12.2 |
0.1555 |
37.93 |
20.2 |
10 |
13.2 |
0.1552 |
37.86 |
20.2 |
Mean |
37.97 |
|
||
Standard Deviation |
0.12 |
|
Measured Values Test Substance Second Series 10000 mg/L test substance (3960 mg/L active ingredient)
Measurement |
Time |
Mass |
Surface Tension |
Temperature |
No |
s |
g |
mN/m |
°C |
1 |
4.1 |
0.1560 |
38.06 |
20.0 |
2 |
5.1 |
0.1549 |
37.79 |
20.0 |
3 |
6.1 |
0.1550 |
37.81 |
20.0 |
4 |
7.1 |
0.1548 |
37.76 |
20.0 |
5 |
8.1 |
0.1547 |
37.74 |
20.0 |
6 |
9.1 |
0.1548 |
37.76 |
20.0 |
7 |
10.1 |
0.1547 |
37.74 |
20.0 |
8 |
11.1 |
0.1544 |
37.67 |
20.0 |
9 |
12.1 |
0.1545 |
37.69 |
20.0 |
10 |
13.1 |
0.1546 |
37.71 |
20.0 |
Mean |
37.77 |
|
||
Standard Deviation |
0.11 |
|
MeasuredValuesTestSubstanceFirstSeries15000mg/Ltestsubstance(5940mg/Lactiveingredient)
Measurement |
Time |
Mass |
Surface Tension |
Temperature |
No |
s |
g |
mN/m |
°C |
1 |
4.1 |
0.1619 |
39.49 |
20.1 |
2 |
5.1 |
0.1611 |
39.30 |
20.1 |
3 |
6.1 |
0.1609 |
39.25 |
20.1 |
4 |
7.1 |
0.1609 |
39.25 |
20.1 |
5 |
8.1 |
0.1608 |
39.23 |
20.1 |
6 |
9.1 |
0.1608 |
39.23 |
20.1 |
7 |
10.1 |
0.1607 |
39.20 |
20.1 |
8 |
11.1 |
0.1608 |
39.23 |
20.1 |
9 |
12.1 |
0.1607 |
39.20 |
20.1 |
10 |
13.1 |
0.1606 |
39.18 |
20.1 |
Mean |
39.26 |
|
||
Standard Deviation |
0.09 |
|
Measured Values Test Substance Second Series 15000 mg/L test substance (5940 mg/L active ingredient)
Measurement |
Time |
Mass |
Surface Tension |
Temperature |
No |
s |
g |
mN/m |
°C |
1 |
4.2 |
0.1622 |
39.57 |
20.0 |
2 |
5.2 |
0.1611 |
39.30 |
20.0 |
3 |
6.2 |
0.1610 |
39.28 |
20.0 |
4 |
7.2 |
0.1609 |
39.25 |
20.0 |
5 |
8.1 |
0.1607 |
39.20 |
20.0 |
6 |
9.2 |
0.1607 |
39.20 |
20.0 |
7 |
10.1 |
0.1608 |
39.23 |
20.0 |
8 |
11.2 |
0.1605 |
39.15 |
20.1 |
9 |
12.1 |
0.1607 |
39.20 |
20.1 |
10 |
13.2 |
0.1609 |
39.25 |
20.1 |
Mean |
39.26 |
|
||
Standard Deviation |
0.12 |
|
MeasuredValuesTestSubstanceFirstSeries20000mg/Ltestsubstance(7920mg/Lactiveingredient)
Measurement |
Time |
Mass |
Surface Tension |
Temperature |
No |
s |
g |
mN/m |
°C |
1 |
4.2 |
0.1646 |
40.15 |
20.1 |
2 |
5.1 |
0.1632 |
39.81 |
20.1 |
3 |
6.1 |
0.1629 |
39.74 |
20.1 |
4 |
7.1 |
0.1629 |
39.74 |
20.1 |
5 |
8.1 |
0.1627 |
39.69 |
20.1 |
6 |
9.1 |
0.1628 |
39.71 |
20.1 |
7 |
10.1 |
0.1629 |
39.74 |
20.1 |
8 |
11.1 |
0.1628 |
39.71 |
20.1 |
9 |
12.1 |
0.1628 |
39.71 |
20.1 |
10 |
13.1 |
0.1627 |
39.69 |
20.1 |
Mean |
39.77 |
|
||
Standard Deviation |
0.14 |
|
Measured Values Test Substance Second Series 20000 mg/L test substance (7920 mg/L active ingredient)
Measurement |
Time |
Mass |
Surface Tension |
Temperature |
No |
s |
g |
mN/m |
°C |
1 |
4.2 |
0.1648 |
40.20 |
20.1 |
2 |
5.2 |
0.1636 |
39.91 |
20.1 |
3 |
6.2 |
0.1637 |
39.93 |
20.1 |
4 |
7.2 |
0.1635 |
39.89 |
20.1 |
5 |
8.2 |
0.1634 |
39.86 |
20.1 |
6 |
9.2 |
0.1635 |
39.89 |
20.1 |
7 |
10.2 |
0.1633 |
39.84 |
20.1 |
8 |
11.2 |
0.1636 |
39.91 |
20.1 |
9 |
12.2 |
0.1633 |
39.84 |
20.1 |
10 |
13.2 |
0.1636 |
39.91 |
20.1 |
Mean |
39.92 |
|
||
Standard Deviation |
0.11 |
|
Interpretation ofResults
Measured Values
Concentration (test substance) mg/L |
Concentration (active ingredient) mg/L |
First Series in mN/m |
Second Series in mN/m |
100 |
39.6 |
70.49 |
69.97 |
500 |
198 |
59.88 |
56.34 |
1000 |
396 |
48.19 |
48.62 |
2500 |
990 |
34.06 |
36.32 |
4000 |
1584 |
33.51 |
32.42 |
4500 |
1782 |
32.82 |
31.81 |
5000 |
1980 |
33.26 |
33.59 |
5500 |
2178 |
33.85 |
34.18 |
6000 |
2376 |
34.24 |
34.31 |
7500 |
2970 |
36.43 |
35.67 |
10000 |
3960 |
37.97 |
37.77 |
15000 |
5940 |
39.26 |
39.26 |
20000 |
7920 |
39.77 |
39.92 |
A deepest point (smallest value of the surface tension) was detected as 4500 mg/L (test substance) and 1782 mg/L (active ingredient) the concentration of this point should be stated as the critical micelle concentration. The yielded values of the surface tension were plotted in a graph against the concentration of the test substance solution. For graph, kindly refer the attached background material section of the IUCLID.
The CMC was determined to be 4500mg/L (equivalent to 1782 mg a.i./L).
Description of key information
The water solubility of the test substance (39.6% active) was determined using critical micelle concentration (CMC) method according to OECD Guideline 115 and EU Method A.5, which is recommended for surface active substances (Krebs, 2019).
Key value for chemical safety assessment
- Water solubility:
- 1 782 mg/L
- at the temperature of:
- 20 °C
Additional information
(high water solubility)
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