Registration Dossier
Registration Dossier
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EC number: 231-043-5 | CAS number: 7420-89-5
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 22 NOV 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 017
- Report date:
- 2017
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- According to OECD 104 resp. EU A.4
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- effusion method: Knudsen cell
Test material
- Reference substance name:
- Disodium 1,5-dihydroxypentane-1,5-disulphonate
- Cas Number:
- 7420-89-5
- Molecular formula:
- C5H10Na2O8S2
- IUPAC Name:
- Disodium 1,5-dihydroxypentane-1,5-disulphonate
- Reference substance name:
- Sodium sulfate
- Cas Number:
- 7757-82-6
- IUPAC Name:
- Sodium sulfate
- Reference substance name:
- Sodium hydrogen sulfite
- Cas Number:
- 7631-90-5
- IUPAC Name:
- Sodium hydrogen sulfite
Constituent 1
impurity 1
impurity 2
Results and discussion
Vapour pressure
- Key result
- Test no.:
- #8
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Remarks on result:
- not measured/tested
- Remarks:
- Four Knudsen cells were prepared with the test substance and 4 measurements were done with each cell. First, the determination was performed at 30 °C. Then, further determinations were made at 45, 60, 75, 90, 105, 120 and 135 °C. The vapour pressure at 20°C was calculated from the regression equation as well: Vapour pressure at 20°C 1.74*10-6 Pa
Applicant's summary and conclusion
- Conclusions:
- For the test substance Glutardialdehyde bis-Sodiumbisulfite, the following vapour pressures at 20 °C and at 25 °C were calculated from the regression equation: Vapour pressure at 20 °C: 1.74 * 10-06 Pa
Vapour pressure at 25 °C: 2.96 * 10-06 Pa
The linear regression of log p vs. 1/T gave a correlation coefficient r of - 0.9986, showing good repeatability and precision. Therefore, the determination is considered as valid.
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