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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
15.06.2009
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP - Guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2009
Report date:
2009

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
effusion method: by loss of weight or by trapping vaporisate
Remarks:
issothermal thermogravimetry

Test material

Constituent 1
Chemical structure
Reference substance name:
N-(4-{[3-(dimethylamino)propyl]sulfamoyl}phenyl)-2-[(2-methoxy-4-nitrophenyl)diazenyl]-3-oxobutanamide
EC Number:
700-222-4
Cas Number:
1065519-44-9
Molecular formula:
C22H28N6O7S
IUPAC Name:
N-(4-{[3-(dimethylamino)propyl]sulfamoyl}phenyl)-2-[(2-methoxy-4-nitrophenyl)diazenyl]-3-oxobutanamide
Details on test material:
- Name of test material (as cited in study report): No. 408 Yellow
- Physical state: yellow powder
- Analytical purity: 98.6%
- Lot/batch No.: 081105-1
- Expiration date of the lot/batch: 04.11.2009
- Stability under test conditions: stable
- Storage condition of test material: at room temperature in the dark

Results and discussion

Vapour pressure
Temp.:
ca. 20 °C
Vapour pressure:
< 0 hPa
Transition / decomposition
Transition / decomposition:
yes
Remarks:
decomposition
Transition temp.:
>= 190 °C

Any other information on results incl. tables

The evaporation rates (vt) at elevated temperatures were determined for the reference substances (benzo(ghi)perylene, chrysene, hexachlorobenzene, naphthalene and water) using a temperature program that was specific for each reference substance. Obtained regression curve is:

PT,20=1.07 * logvT,20+4.52 (r=0.996, n=10)

The weight loss of the test substance at 170°C and 180°C was lower than the weight loss of chrysene at the same temperatures. From this, it was concluded that the vapour pressure of the test substance is <8.40・10-7Pa (vapour pressure of chrysene at 20°C is 8.40・10-7Pa after Borges, H.T., Toxicity summary for chrysene, Oak Ridge National Laboratory, Tenessee, USA, 1994). The much higher weight loss at 190°C and 200°C were due to decomposition of the test substance in the test system and were not used in the study.

Applicant's summary and conclusion