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EC number: 221-359-1 | CAS number: 3077-12-1
- 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
Surface tension
Administrative data
Link to relevant study record(s)
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 26 Apr - 02 May 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Type of method:
- ring method
- Surface tension:
- 62.5 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
Reference
Study results
List of measurement results
The measurement results have to be corrected due to the influence of the
instrument. The correction factor can be calculated from the ratio of
the theoretical value of the surface tension (72.75 mN/m at 20 °C) for
water and the measured value for water (Table 1). In this case the
correction factor for the instrument is 1.0107.
Water calibration: Temp. = 22 °C, ρ = 0.998 g/cm^3
Table 1
Surface tension of purified water |
|
Value 1 |
72.0 mN/m |
Value 2 |
72.0 mN/m |
Value 3 |
72.0 mN/m |
Value 4 |
72.0 mN/m |
Value 5 |
71.9 mN/m |
Value 6 |
72.0 mN/m |
Arithmetic mean |
71.98 mN/m |
Standard deviation |
< 0.1 mN/m |
Temperature differences were considered by entry of the density. For the measurements a density of 0.998 g/cm^3 was used.
The first solution was not considered by the evaluation because of slightly higher concentration than 1.0 g/L.
Second test solution: (c = 1.012 g/L), temp. = 20. 4 °C, ρ = 0.988 g/cm^3 age of the solution = 619 min
Table 2
Surface tension of solution |
|
Value 1 |
61.1 mN/m |
Value 2 |
61.1 mN/m |
Value 3 |
61.1 mN/m |
Value 4 |
61.1 mN/m |
Value 5 |
61.1 mN/m |
Value 6 |
61.1 mN/m |
Arithmetic mean |
61.1 mN/m |
Standard deviation |
< 0.1 mN/m |
Third test solution: (c = 1.011 g/L), temp. = 20. 4 °C, ρ = 0.988 g/cm^3 age of the solution = 240 min
Table 3
Surface tension of solution |
|
Value 1 |
61.1 mN/m |
Value 2 |
61.1 mN/m |
Value 3 |
61.1 mN/m |
Value 4 |
61.1 mN/m |
Value 5 |
61.1 mN/m |
Value 6 |
61.1 mN/m |
Arithmetic mean |
61.1 mN/m |
Standard deviation |
0.1 mN/m |
Fourth test solution: (c = 1.102 g/L), temp. = 19.8 °C, ρ = 0.988 g/cm^3 age of the solution = 148 min
Table 4
Surface tension of solution |
|
Value 1 |
63.4 mN/m |
Value 2 |
63.4 mN/m |
Value 3 |
63.4 mN/m |
Value 4 |
63.4 mN/m |
Value 5 |
63.4 mN/m |
Value 6 |
63.4 mN/m |
Arithmetic mean |
63.4 mN/m |
Standard deviation |
< 0.1 mN/m |
Calculation
Surface tension (arithmetic mean of three test solutions): 61.8 mN/m±1.4
mN/m
Surface tension (arithmetic mean corrected by calibration factor determined via water calibration): 62.5 m/Nm
Discussion and Conclusion
The test item N,N-dihydroxyethyl-p-toluidine has a surface tension of
62.5 mN/m (solution with c = approx. 1 g/L).
Description of key information
62.5 mN/m at 20 °C and 1 g/L (ring method, EU Method A.5)
Key value for chemical safety assessment
- Surface tension:
- 62.5
- in mN/m at 20°C and concentration in mg/L:
- 1 000
Additional information
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