Disodium 6-amino-5-[[4-[(2-bromo-1-oxoallyl)amino]-2-sulphonatophenyl]azo]-4-hydroxynaphthalene-2-sulphonate

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2014-08-21 to 2014-08-22

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.4 (Vapour Pressure)

GLP compliance:

yes (incl. QA statement)

Remarks:

Swiss GLP

Type of method:

effusion method: isothermal thermogravimetry

Remarks:

Isothermal Thermogravimetr

Specific details on test material used for the study:

SOURCE OF TEST MATERIAL
- Source and lot/batch number of test material: SBL/027/LRB (India)
- Expiration date of the lot/batch: May 05, 2019

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: In the freezer (≤ -10 °C), under dark and dry conditions

Temp.:

20 °C

Vapour pressure:

0 Pa

Due to test item properties (water content ≤ 10 % (w/w)) the sample for the measurement was dried at 150°C.

The experiment was done applying temperatures from 200 °C to 250 °C.

The regression curve for calibration is: The coefficient of correlation (r2) was 0.9981.

Extrapolation of the curve to 20 °C and fitting this value in the regression curve, a vapour pressure of 7.43 × 10^-7Pa was obtained (mean of three determinations). 

Conclusions:

The vapour pressure of FAT 40062/C at 20 °C was: 7.43 × 10E-7 Pa.

Executive summary:

The vapour pressure of FAT 40062/C was determined according to OECD guideline 104 and EU method A.4.The purpose of the study was to determine the vapour pressure of the test item using the isothermal thermogravimetrical effusion method. The evaporation rates of the test item at elevated temperatures and ambient pressure were determined by monitoring the weight loss. The isothermal thermogravimetric effusion method was applied for the determination of the vapour pressure of FAT 40062/C TE. Due to test item properties the test was done above 200 °C with a drying phase at 150 °C for 20 min. The vapour pressure of the test item at 20 °C (293K) was calculated to: 7.43 × 10^-7 Pa (mean of three determinations, without water). This study is classified acceptable and satisfies the guideline requirements for vapour pressure studies.

Description of key information

The vapour pressure of FAT 40062/C was determined according to OECD guideline 104 and EU method A.4.The purpose of the study was to determine the vapour pressure of the test item using the isothermal thermogravimetrical effusion method. The evaporation rates of the test item at elevated temperatures and ambient pressure were determined by monitoring the weight loss. The isothermal thermogravimetric effusion method was applied for the determination of the vapour pressure of FAT 40062/C TE.

The vapour pressure of the test item at 20 °C (293K) was calculated to: 7.43 × 10^-7Pa (mean of three determinations, without water).

Key value for chemical safety assessment

Vapour pressure:

0 Pa

at the temperature of:

20 °C