Registration Dossier

Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017-10-28 to 2018-01-13
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017
Report Date:
2018

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Version / remarks:
Surface tension in compliance with Regulation (EC) No. 1907/2006, Council Regulation (EC) No. 440/2008 EC A.5. method (2008) and OECD No. 115 (1995)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
OECD harmonised ring method

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: crystalline
Details on test material:
- State of aggregation:
- Particle size distribution:
- Mass median aerodynamic diameter (MMAD):
- Geometric standard deviation (GSD):
- Shape of particles:
- Surface area of particles:
- Crystal structure:
- Coating:
- Surface properties:
- Density:
- Moisture content:
- Residual solvent:
- Activation:
- Stabilisation:
- Other:
SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material:
- Expiration date of the lot/batch:
- Purity test date:

RADIOLABELLING INFORMATION (if applicable)
- Radiochemical purity:
- Specific activity:
- Locations of the label:
- Expiration date of radiochemical substance:

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: Store in a cool, dry and well ventilated place and away from foodstuffs. In darkness at room temperature.
- Stability under test conditions: Yes
- Solubility and stability of the test substance in the solvent/vehicle: Slighthly soluble in water 33.9 mg/L
- Reactivity of the test substance with the solvent/vehicle of the cell culture medium: Reacts with strong acids

TREATMENT OF TEST MATERIAL PRIOR TO TESTING
- Treatment of test material prior to testing:
- Preliminary purification step (if any): None
- Final dilution of a dissolved solid, stock liquid or gel: N/A
- Final preparation of a solid:

FORM AS APPLIED IN THE TEST (if different from that of starting material)

Remark: Environmental precautions: Do not allow to enter drains or waterways.
Do not discharge into the subsoil/soil
Specific details on test material used for the study:
OURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: NIPPONT AUTOMOTIVE COATINGS Co. Ltd.
- Expiration date of the lot/batch: 5C12AA
- Purity test date: 96%STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: In darkness at room temperature
- Solubility and stability of the test substance in the solvent/vehicle:
SOLUBILITY IN WATER(20℃) : Dispersible in water.
SOLVENT SOLUBILITY : Soluble in MeOH,EtOH,Xylene,Toluene
- Stability under test conditions:
STABILITY :Stable under normal temperature and pressure.
CONDITION TO AVOID :May burn but does not ignite readily.Flammable poisonous
gases may accumulate in tanks and hopper cars.
May ignite combustible (wood,paper,oil,etc.).
INCOMPATABILITIES :OXIDIZERS(STRONG)- Fire and explosion hazard.
HAZARDOUS :Thermal decomposition products may include toxic oxides
DECOMPOSITION of carbon and nitrogen.
POLYMERIZATION :Hazardous polymerization has not been reported to
occur under normal temperatures and pressures.

TREATMENT OF TEST MATERIAL PRIOR TO TESTING: According to the requirements of the Guideline

FORM AS APPLIED IN THE TEST (if different from that of starting material)Not different from the form applied of starting material.

Results and discussion

Surface tensionopen allclose all
Key result
Surface tension:
ca. 33.1 mN/m
Temp.:
20.2 °C
Conc.:
30.51 mg/L
Remarks on result:
other:
Remarks:
This surface tension is related to Assay number 1
Key result
Surface tension:
ca. 33.3 mN/m
Temp.:
20 °C
Conc.:
30.51 mg/L
Remarks on result:
other:
Remarks:
This second assay was not taken into account as the value obtained was not reliable.
Key result
Surface tension:
ca. 32.8 mN/m
Temp.:
20.1 °C
Conc.:
30.51 mg/L
Remarks on result:
other:
Remarks:
Related to assay number 3

Any other information on results incl. tables

The mean sufrace tension of destilled water was 71. 6 mN/m at 20.2 °C.

Measurment vessel was considered to be clean and ready for use.

Temperature              20 (°C)

Time              Surface tension (mN/m)

After 23 s              71.61

After 84 s              71.60

After 145 s              71.68

Mean result              71.6

Applicant's summary and conclusion

Conclusions:
The mean surface tension of the test item diluted at 30.49 mg/L (90% of its hydrosolubility) in distilled water at 20.1 °C was 33.1 mN/m. The test item was considered as surface-active in the experimental conditions used.
Interpretation
Considering that distilled water has a theoretical surface tension of 72.75 mN/m at 20 °C, test items showing a surface tension lower than 60 mN/m under the conditions of this
method should be regarded as being surface-active materials.
Executive summary:

The mean surface tension of the test item diluted at 30.49 mg/L (90% of its hydrosolubility) in distilled water at 20.1 °C was 33.1 mN/m.

The test item was considered as surface-active in the experimental conditions used.