5-bromo-1,3-dichloro-2-fluorobenzene

Surface tension

Link to relevant study record(s)

Reference

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

Qualifier:

according to guideline

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

ring method

Key result

Surface tension:

71.3 mN/m

Temp.:

20 °C

Remarks on result:

other: tested as 90% saturated solution

Table 1: Sample solution A surface tension measurements

Time (minutes)	Temperature (°C)	Reading (mN/m)
85	20.0	69.5
94	20.0	70.0
104	20.0	70.0
119	20.0	71.0
129	20.0	71.5
140	20.0	71.5
153	20.0	71.5
164	20.0	71.0
Mean sample reading		71.3

Table 2: Sample solution B surface tension measurements

Time (minutes)	Temperature (°C)	Reading (mN/m)
180	20.0	69.5
189	20.0	70.0
198	20.0	71.0
206	20.0	71.0
214	20.0	71.5
223	20.0	71.5
232	20.0	71.5
Mean sample reading		71.3

Conclusions:

The average surface tension of duplicate 90% saturated solutions of test item in water has been determined to be 71.3 mN/m at 20.0 ± 0.5 °C.

Executive summary:

The surface tension of a 90% saturated solution of the test substance in water was determined under GLP in accordance with OECD TG 115. The tests were performed in thoroughly cleaned measurement vessels. High purity water used for sample preparation was checked to be in the water tolerance/calibration factor range of 0.990 to 1.010. Two separate experiments were carried out. The sample solutions were prepared by weighing an aliquot of the substance of about 0.2 g into 200 mL of high purity water. The sample solution was then shaken at 30 °C for 24 hours, re-equilibrated at 20 °C for 15.5 hours, centrifuged at 13000 rpm for 15 minutes, diluted to 90% of its former concentration with high purity water and finally transferred to the clean measuring vessel. Several measurements of the surface tension were performed. The average surface tension of duplicate 90% saturated solutions of the substance was 71.3 mN/m at 20 °C ± 0.5 °C.

Description of key information

The surface tension of a 90% saturated solution of the substance in high purity water has been determined reliably in a study under GLP and in accordance with OECD TG 115.

Key value for chemical safety assessment

Surface tension:

71.3