Registration Dossier

Diss Factsheets

Administrative data

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1995
Report date:
1995

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
GLP compliance:
yes
Type of method:
gas saturation method

Test material

Constituent 1
Chemical structure
Reference substance name:
4,4'-dithiobis(5-amino-1-(2,6-dichloro-4-(trifluoromethyl)phenyl)-1H-pyrazole-3-carbonitrile)
EC Number:
603-434-4
Cas Number:
130755-46-3
Molecular formula:
C22 H8 Cl4 F6 N8 S2
IUPAC Name:
4,4'-dithiobis(5-amino-1-(2,6-dichloro-4-(trifluoromethyl)phenyl)-1H-pyrazole-3-carbonitrile)

Results and discussion

Vapour pressureopen allclose all
Temp.:
20 °C
Vapour pressure:
< 0 Pa
Key result
Temp.:
25 °C
Vapour pressure:
< 0 Pa
Temp.:
50 °C
Vapour pressure:
< 0 Pa
Vapour pressure at 50°C (if relevant for classification of gas under pressure)
Key result
Vapour pressure:
< 0 Pa

Any other information on results incl. tables

RESULTS AND DISCUSSION

Blank test

The solutions recovered from the blank test were analysed and the chromatograms showed no interference in the elution time window for the test material.

Recovery test

The trapping and extraction efficiency have been checked under the chosen experimental conditions simulating a vapour pressure of about 3x10-4 Pa

and 1.4x10-5 Pa. The test substance was retained in the first trap and the recovery va!ues ca!culated for the two tests performed were found to be about 99 and 93 %.

Preliminary test

The chomatograms obtained from the preliminary test showed no signal for MB46307.

In the conditions of the preliminary test, such a quantity of MB46307 (0.005 mg in 5 ml) would correspond to a vapour pressure of about 1.5x10-5 Pa.

Vapour pressure determination

The preliminary test indicated that the vapour pressure of the test substance is much lower than 1.5x10-5 Pa at 50°C. Therefore it is estimated

that the vapour pressure at 25°C or 20°C is lower than 1x10-6 Pa and no complementary experiment was undertaken

1.5*10 -5Pa at 50°C, 1*10 -6 Pa at 20°C or 25°C (extrapolated)

The measured vapour pressures are related to the temperatures according

to the Clausius Clapeyron equation :

log (PS) = A (1/T1 ) + B

where : PS is the vapour pressure of the compound (in Pa)

T is the absolute temperature (in K).

This equation is used to calculate the vapour pressure at 25°C.

Applicant's summary and conclusion