4,6-Dichloro-5-fluoropyrimidine

Surface tension

Link to relevant study record(s)

Reference

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

11 Jun - 12 Jun 2002

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

Version / remarks:

OECD-Ring method in compliance with guideline 92/69/EWG A.5. surface tension.

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

OECD harmonised ring method

Remarks:

OECD-Ring method in compliance with guideline 92/69/EWG A.5. surface tension.

Key result

Surface tension:

71.86 mN/m

Temp.:

20 °C

Conc.:

1 g/L

First measurement:

First correction value, Sigma corrected 1:

First correction value ( sigma corrected 1) = 0.9402 * 76.43 mN/m = 71.859 mN/m

(76.43 mN/m surface tension of the testsubstance, first measurement)

Second correction value, sigma corrected 2:

sigma corrected 1 = 71.859 mN/m

sigma corrected 2 = -1.594 + 0.96115 * 71.859 mN/m + 0.00085 * ( 71.859 mN/m )² = 71.86 mN/m

Result first measurement 71.86 mN/m

 

Second Measurement (after 30 minutes waiting):

First correction value, sigma corrected 1:

First correction value (sigma corrected 1) = 0.9402 * 76.56 mN/m = 71.98 mN/m
(76.56 mN/m surface tension of the testsubstance, second measurement)

Second correction value, sigma corrected 2:

sigma corrected 1 = 71.98 mN/m
sigma corrected 2 = -1.594 +0.96115 * 71.98 mN/m + 0.00085 * ( 71.98 mN/m ) * 2 = 71.99 mN/m

Result second measurement 71.99 mN/m

 

Validity criteria for the measurement of the surface tension:

Target condition according to guideline 92/69/EWG A.5:	Actual condition according to the study:	Validity criteria met:
A solution of the substance is prepared in distilled water. The concentration of this solution should be 90 % of the saturation solubility of the substance in water; when this concentration exceeds 1 g/ L, a concentration of 1 g/ L is used for testing.	The water solubility was determined to be 5.6 g/L in another test (see "Water solubility"). Thus, a concentration of 1 g/L was used for testing.	Yes
The measurement shall be made at approximately 20 °C and shall be controlled to within ± 0.5 °C.	The stated temperature was 20 °C.	Yes
The measurement results: individual readings, their arithmetic mean and the corrected mean; concentration of the solution should be stated.	In this study, the value of the first measurement was stated as the main value. Thus, except for the arithmetic mean, the results are stated in demanded detail.	Yes

 

Conclusions:

The surface tension of the test substance was determined to be: 71.86 mN/m.

Executive summary:

The surface tension of the test substance at 20°C and a concentration of 1.0 g/L was determined to be: 71.86 mN/m.

Description of key information

The surface tension of the test substance was determined to be: 71.86 mN/m.

Key value for chemical safety assessment

Surface tension:

71.86

in mN/m at 20°C and concentration in mg/L:

1 000