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Registration Dossier
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EC number: 200-059-4 | CAS number: 50-69-1
Boiling point
Administrative data
- Endpoint:
- boiling point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2018
- 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:
- other: EC Guideline A.2. Boiling Temperature. March 04, 2016
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 103 (Boiling Point)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7220 (Boiling Point / Boiling Range)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
Test material
- Reference substance name:
- D-ribose
- EC Number:
- 200-059-4
- EC Name:
- D-ribose
- Cas Number:
- 50-69-1
- Molecular formula:
- C5H10O5
- IUPAC Name:
- D-ribose
- Test material form:
- solid: particulate/powder
- Details on test material:
- Dry powder, white to slightly yellow
Constituent 1
- Specific details on test material used for the study:
- Appearance: White to slightly yellow powder
Batch: Q0926501
Purity/Composition: 99.3%
Test item storage: At room temperature protected from light
Stable under storage conditions until: 30 November 2019 (expiry date)
Results and discussion
Boiling point
- Key result
- Boiling pt.:
- > 150 °C
- Atm. press.:
- ca. 1 013.25 hPa
- Remarks on result:
- other: reaction and/or decomposition of the test item at > 150°C (> 423K) was observed
Any other information on results incl. tables
An endothermic effect was observed between 25°C and 125°C followed by a broad endothermic effect starting at 150°C. The endothermic effect was most likely obtained due to melting of the test item. The second endothermic effect was probably obtained due to reaction and/or decomposition of the test item.
After the experiment, a dark brown molten residue remained in the sample container (original colour: white to slightly yellow). The change of the colour indicated reaction and/or decomposition of the test item. Based on this visual observation, it was found that the test item had molten and the change of the colour demonstrated reaction and/or decomposition of the test item.
Applicant's summary and conclusion
- Conclusions:
- Based on this result, the test item has a boiling point > 150°C at 1013.25 hPa.
- Executive summary:
The boiling temperature of D-Ribose was tested by DSC according to OECD 103 guideline study.
Reaction and/or decomposition of the test item was observed during DSC experiment at temperatures of > 150°C (> 423K). Boiling of the test item was not observed below the temperature at which reaction and/or decomposition started.
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