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EC number: 816-307-5 | CAS number: 45738-97-4
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 31Oct2017 - 09Jan2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7950 (Vapor Pressure)
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- effusion method: isothermal thermogravimetry
Test material
- Reference substance name:
- 3,7-dihydropurin-6-one;sodium
- Cas Number:
- 45738-97-4
- Molecular formula:
- C5H3N4NaO
- IUPAC Name:
- 3,7-dihydropurin-6-one;sodium
- Test material form:
- solid: particulate/powder
- Details on test material:
- - Appearance: White powder
- Purity / Composition: 98%
- Test item storage: Room temperature
Constituent 1
- Specific details on test material used for the study:
- SOURCE OF TEST MATERIAL
- Batch No.of test material: 16K235305
- Purity: 98.0%
STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: At room temperature
Results and discussion
Vapour pressureopen allclose all
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- ca. 0 Pa
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- ca. 0 mm Hg
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- ca. 0 Pa
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- ca. 0 mm Hg
Applicant's summary and conclusion
- Conclusions:
- The isothermal TGA effusion method was applied for the determination of the vapour pressure of Sodium hypoxanthine.
The vapour pressure of the test item at 20°C (293K) was: < 1.3 × 10-8 [Pa] , < 1.0 × 10-10 [mm Hg]
The vapour pressure of the test item at 25°C (298K) was: < 7.2 × 10-8 [Pa] , < 5.4 × 10-10 [mm Hg] - Executive summary:
In the range of 200°C and 230°C a log p versus 1/T curve for the test item could not be determined since the coefficient of correlation (r) was < 0.99 (data is archived in the raw data). This is most likely due to reaction and/or decomposition of the test item. Since no accurate vapour pressure could be calculated from the obtained results the weight losses of the test item were compared with the results of benzo(ghi)perylene at the same temperatures. Since the weight loss of the test item was lower than the weight loss of the reference compound, the vapour pressure of the test item is considered to be below the vapour pressure of benzo(ghi)perylene.
The vapour pressure of the test item at 20°C (293K) was: < 1.3 × 10-8 [Pa] , < 1.0 × 10-10 [mm Hg]
The vapour pressure of the test item at 25°C (298K) was: < 7.2 × 10-8 [Pa] , < 5.4 × 10-10 [mm Hg]
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