Registration Dossier
Registration Dossier
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EC number: 269-087-2 | CAS number: 68187-32-6
Surface tension
Administrative data
Link to relevant study record(s)
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Justification for type of information:
- Experimental test result performed using standard OECD test guidelines
- Qualifier:
- according to guideline
- Guideline:
- other: ISO 9101:1987 Surface active agents: Determination of interfacial tension -Drop volume method.
- GLP compliance:
- no
- Type of method:
- other: Drop volume method
- Key result
- Surface tension:
- 42.92 mN/m
- Temp.:
- 20 °C
- Remarks on result:
- other: Other details not known
- Conclusions:
- The mean surface tension of test chemical was determined to be 42.92 dynes/cm at 20º C and 970.4 hPa.
- Executive summary:
Determination of surface tension of test chemical. The study was performed in accordance with the ISO 9101:1987 Surface active agents: Determination of interfacial tension -Drop volume method. The mean surface tension of test chemical was determined to be 42.92 dynes/cm at 20º C and 970.4 hPa.
Reference
OBSERVATIONS:
S. No.
|
Test temperature (°C) |
Atm. Pressure (hPa) |
No. of drops of water (n1) |
No. of drops of test chemical (n2) |
1 |
20 |
968.4 |
60 |
96 |
2 |
20 |
971.1 |
60 |
96 |
3 |
20 |
971.8 |
60 |
96 |
Mean |
20 |
970.4 |
60 |
96 |
Density of test chemical at 20°C : 0.9405 g/cm ³
Surface tension of water at 20°C: 72.89 dynes/cm
CALCULATIONS:
Surface Tension:
¥ʅ=ρʅX nw X¥w /ρw X nʅ
Where,
¥1 = surface tension of test chemical
¥2 = surface tension of water
ρ1=density of test chemical
ρ 2 =density of water
n1 = no. of drops of test chemical
n2=no. of drops of water
¥l = 0.9405 X60X 72.89/0.9982 X 96
¥l = 56.43 /95.82
¥l = 42.92 dynes/cm
Description of key information
On the basis of available data from study report, surface tension of test chemical was determined. The study was performed in accordance with the ISO 9101:1987 Surface active agents: Determination of interfacial tension -Drop volume method. The mean surface tension of test chemical was determined to be 42.92 dynes/cm at 20º C and 970.4 hPa.
Key value for chemical safety assessment
- Surface tension:
- 42.92
Additional information
On the basis of available data from study report, surface tension of test chemical was determined. The study was performed in accordance with the ISO 9101:1987 Surface active agents: Determination of interfacial tension -Drop volume method. The mean surface tension of test chemical was determined to be 42.92 dynes/cm at 20º C and 970.4 hPa.
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