Registration Dossier
Registration Dossier
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EC number: 202-384-7 | CAS number: 95-02-3
Surface tension
Administrative data
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 29 April 2010 - 15 November 2010
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 010
- Report date:
- 2010
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- GLP compliance:
- yes
- Type of method:
- ring method
Test material
- Reference substance name:
- 4-amino-2-methylpyrimidine-5-methylamine
- EC Number:
- 202-384-7
- EC Name:
- 4-amino-2-methylpyrimidine-5-methylamine
- Cas Number:
- 95-02-3
- Molecular formula:
- C6H10N4
- IUPAC Name:
- 5-(aminomethyl)-2-methylpyrimidin-4-amine
- Details on test material:
- - Name of test material (as cited in study report): grewe-diamin
- Physical state: solid
Constituent 1
Results and discussion
Surface tension
- Surface tension:
- 72.77 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
Any other information on results incl. tables
Numerical data have been rounded for presentation, a manual recalculation therefore may yield slightly different results to those given in the tables.
Table1: Surface tensionof water
tensiometer readings (mN/m) |
mean (mN/m) |
calculatedF |
72.1 |
72.1
|
1.0090
|
72.1 |
||
72.1 |
Table2: Surface tension of the test substance solution
|
age of the surface of the test substance solution |
|
|
|
1 |
00:30 |
72.0 |
72.65 |
72.75 |
2 |
00:50 |
72.1 |
72.75 |
72.86 |
3 |
01:00 |
72.0 |
72.65 |
72.75 |
4 |
01:10 |
72.0 |
72.65 |
72.75 |
5 |
01:20 |
72.0 |
72.65 |
72.75 |
|
|
mean of determinations 1 to 5 |
72.77 |
|
|
|
SD |
0.049 |
|
Applicant's summary and conclusion
- Conclusions:
- The mean surface tension of the test substance was 72.77 mN/m, standard deviation 0.049, at a temperature of 20.0 °C.
- Executive summary:
The surface tension was determined with the OECD ring method with an interfacial tensiometer.
The temperature during the test was 20.0 °C.
The surface tension was constant during the test. The mean value was therefore calculated from the determinations obtained 30 minutes after the preparation and later. The age of the surface was 30 min to 1 h 20 min.
The mean surface tension of the test substance was 72.77 mN/m, standard deviation0.049, at a temperature of 20.0 °C.
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