Registration Dossier
Registration Dossier
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EC number: 215-100-1 | CAS number: 1302-42-7
Surface tension
Administrative data
Link to relevant study record(s)
- Endpoint:
- surface tension
- Type of information:
- migrated information: read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Study period:
- 19 Apr - 12 Jul 2010
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Food and Consumer Product Safety Authority (VWA), Den Haag, The Netherlands
- Type of method:
- ring method
- Surface tension:
- 74.3 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
- Conclusions:
- The OECD harmonized ring method was used for the determination of the surface tension of sodium aluminate. The surface tension of a test solution at a concentration of 1 g/L in water and at 20 °C was 74.3 mN/m. According to this, the test substance is considered not to be surface active.
- Executive summary:
The OECD harmonized ring method was used for the determination of the surface tension of sodium aluminate. The surface tension of a test solution at a concentration of 1 g/L in water and at 20 °C was 74.3 mN/m. According to this, the test substance is considered not to be surface active.
Reference
Table: Surface tension of the test substance
Measurement |
Time passed [minutes] |
Surface tension [mN/m] |
||
individual |
mean(1) |
mean multiplied by Ob and Harkins-Jordan corrected value |
||
1 |
20 |
70.4 |
73.9 |
74.3 |
2 |
21 |
72.1 |
|
|
3 |
22 |
72.9 |
|
|
4 |
23 |
73.3 |
|
|
5 |
24 |
73.5 |
|
|
6 |
25 |
73.8 |
|
|
7 |
26 |
73.8 |
|
|
8 |
27 |
74.0 |
|
|
9 |
28 |
73.9 |
|
|
10 |
29 |
73.9 |
|
|
(1) Mean calculated from measurements 6 to 10, after equilibrium was reached
Description of key information
The surface tension of a test solution at a concentration of 1 g/L in water and at 20 °C was 74.3 mN/m.
Key value for chemical safety assessment
- Surface tension:
- 74.3
- in mN/m at 20°C and concentration in mg/L:
- 1 000
Additional information
Test result refers to sodium aluminate (NaAlO2) aqueous solution (38.3%) containing excess disodium oxide (Na2O) as stabiliser.
The OECD harmonized ring method was used for the determination of the surface tension of sodium aluminate. The surface tension of a test solution at a concentration of 1 g/L in water and at 20 °C was 74.3 mN/m (Brekelmans 2010). According to this, the test substance is considered not to be surface active.
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