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EC number: 828-215-2 | CAS number: 172796-84-8
Surface tension
Administrative data
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- The study was conducted between 12 September 2018 and 17 November 2018.
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 019
- Report date:
- 2019
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- ring method
Test material
- Reference substance name:
- phosphonic acid, [2-(4-aminophenyl)-1-hydroxyethylidene]bis-, monosodium salt
- EC Number:
- 828-215-2
- Cas Number:
- 172796-84-8
- Molecular formula:
- C8H12NO7P2Na
- IUPAC Name:
- phosphonic acid, [2-(4-aminophenyl)-1-hydroxyethylidene]bis-, monosodium salt
- Reference substance name:
- 4-aminophenylacetic acid
- EC Number:
- 214-828-7
- EC Name:
- 4-aminophenylacetic acid
- Cas Number:
- 1197-55-3
- Molecular formula:
- C8H9NO2
- IUPAC Name:
- 4-aminophenylacetic acid
- Reference substance name:
- EBP dimer
- Molecular formula:
- C16H22N2O12P4
- IUPAC Name:
- EBP dimer
- Test material form:
- solid: particulate/powder
Constituent 1
impurity 1
impurity 2
- Specific details on test material used for the study:
- Identification: Phosphonic acid, [2-(4-aminophenyl)-1-hydroxyethylidene]bis-, monosodium salt (“EBP”)
Appearance/Physical state: Beige colored powder
Batch: CHPC071917EBP
Purity: >90%
Expiry date: 01 July 2019
Storage conditions: Room temperature in the dark
Results and discussion
Surface tension
- Key result
- Surface tension:
- 73 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
Any other information on results incl. tables
The readings, times and temperatures for the sample solutions are shown in the following tables:
Sample 1
Age of Solution (min) |
Reading (mN/m) |
Temperature (°C) |
153 |
73.0 |
19.8 |
157 |
73.0 |
19.8 |
161 |
73.0 |
19.8 |
165 |
73.0 |
19.8 |
169 |
73.0 |
19.8 |
Sample 2
Age of Solution (min) |
Reading (mN/m) |
Temperature (°C) |
181 |
57.5 |
19.8 |
186 |
60.0 |
19.8 |
190 |
62.0 |
19.8 |
195 |
66.0 |
20.0 |
198 |
69.5 |
20.0 |
202 |
69.5 |
20.0 |
206 |
72.5 |
20.0 |
210 |
73.0 |
20.0 |
214 |
73.0 |
20.0 |
218 |
73.0 |
20.0 |
222 |
73.0 |
20.0 |
226 |
73.0 |
20.0 |
Mean Sample 1 result: 73.0mN/m (all five
readings) pH of Sample 1 : 4.4
Mean Sample 2 result: 73.0mN/m (last five readings) pH
of Sample 2 : 4.4
Mean result : 73.0mN/m
Overall temperature : 20.0 ± 0.5ºC
Applicant's summary and conclusion
- Conclusions:
- The surface tension at nominally 1 g/L solutions of test item in water has been determined to be 73.0 mN/m at 20.0 ± 0.5 °C. The test item was considered not to be surface-active.
- Executive summary:
Surface Tension. 73.0 mN/m (duplicate, nominally 1.0 g/L solutions) at 20.0 ± 0.5 °C, using a ring method, designed to be compatible with Method A.5 Surface Tension of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 115 of the OECD Guidelines for Testing of Chemicals, 27 July 1995. The test item was considered not to be surface-active.
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