Registration Dossier
Registration Dossier
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EC number: 243-094-0 | CAS number: 19473-49-5
Melting point / freezing point
Administrative data
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 021
- Report date:
- 2021
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- capillary method
Test material
- Reference substance name:
- 5-potassium hydrogen L-glutamate
- EC Number:
- 243-094-0
- EC Name:
- 5-potassium hydrogen L-glutamate
- Cas Number:
- 19473-49-5
- Molecular formula:
- C5H9NO4.K
- IUPAC Name:
- potassium 5-oxido-5-oxo-L-norvaline
- Test material form:
- solid
1
- Specific details on test material used for the study:
- Test item: L-GLUTAMIC ACID MONOPOTASSIUM SALT
MONOHYDRATE
CAS No.: 6382-01-0
Appearance: White powder
Batch number: SLCJ1327
Manufacturing date: 15.12.2020
Expiry date: 01.12.2022
Producer: Sigma-Aldrich Handels GmbH
Sample code: 46/21
Storage temperature range: 10-25 ̊C
Results and discussion
Melting / freezing point
- Melting / freezing pt.:
- ca. 112.9
- Atm. press.:
- ca. 101 325 Pa
- Decomposition:
- no
- Decomp. temp.:
- ca. 205 °C
Applicant's summary and conclusion
- Conclusions:
- L-Glutamic Acid Monopotassium Salt Monohydrate melting point equals 112.9 ± 1.0 °C.
- Executive summary:
L-Glutamic Acid Monopotassium Salt Monohydrate melting point equals 112.9 ± 1.0 °C.
Determination of the melting point was performed in accordance with the Standard Operating
Procedure SPO/BS/25/b (edition 5). The melting point determination was performed according to EC method A.1 “Melting/freezing temperature”, which is in conformity with the
OECD Guideline for Testing of Chemicals no. 102 “Melting point/melting range”.
The capillary tube in heated metal block method and BÜCHI Melting Point B-565 apparatus
was used. For melting point determination a substance sample was pulverized, finely ground,
placed in a capillary tube and packed tightly. The measurements were performed in three
parallel tubes. Observations of the tested material properties changes were recorded in the
temperature range investigated.
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