Registration Dossier
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EC number: 241-155-6 | CAS number: 17090-93-6
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:
- 2 022
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:
- sodium 2-amino-3-carboxypropanoate
- Cas Number:
- 323194-76-9
- Molecular formula:
- C4H7NO4.xNa
- IUPAC Name:
- sodium 2-amino-3-carboxypropanoate
- Test material form:
- solid: particulate/powder
- Details on test material:
- Name: L-aspartic acid, sodium salt monohydrate 1
Batch/Lot number: Z201125/ VG29848563
CAS number: 323194-76-9
Anhydrous substance name: L-aspartic acid, sodium salt, CAS: 17090-93-6
Appearance: Solid, white, crystalline powder
Purity: 98%
Expiry date: 24 November 2022
Storage conditions: Room temperature (15-25 ºC), protected from humidity (tight closed
container)
Constituent 1
- Specific details on test material used for the study:
- Test item: Aspartic Acid Sodium Salt Monohydrate – min. 98% - ADCF (L-Aspartic acid monosodium salt monohydrate)
Active substance: Aspartic Acid Sodium Salt Monohydrate
CAS No.: 323194-76-9 [17090-93-6 – L-aspartic acid Sodium salt (anhydrous)]
Appearance: Solid, crystalline powder, white
Batch number: VG29848563 Z201125
Manufacturing date: 25.11.2020
Expiry date: 24.11.2022
Producer: Chemos GmbH Co. KG
Sample code: 35/22
Storage temperature range: 15-30 ̊C
Results and discussion
Melting / freezing point
- Key result
- Atm. press.:
- ca. 101 325 Pa
- Decomposition:
- yes
- Decomp. temp.:
- ca. 225 °C
- Remarks on result:
- not determinable
- Remarks:
- The L-Aspartic acid monosodium salt monohydrate decomposes below melting point and the decomposition process starts at about 225 °C.
Applicant's summary and conclusion
- Conclusions:
- Aspartic Acid Sodium Salt Monohydrate (L-Aspartic acid monosodium salt monohydrate) decomposes below melting point, decomposition process starts at about 225 °C.
(EC A.1/OECD No. 102) - Executive summary:
Determination of the melting point
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 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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