Registration Dossier
Registration Dossier
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EC number: 456-990-3 | CAS number: 244761-29-3 LITHIUM-BIS(OXALATO)BORATE
Stability in organic solvents and identity of relevant degradation products
Administrative data
Link to relevant study record(s)
- Endpoint:
- stability in organic solvents and identity of relevant degradation products
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 10-2004 - 11-2004
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- in-house testing according to internal procedure
- GLP compliance:
- no
- Test substance stable:
- ambiguous
- Transformation products:
- not specified
- Conclusions:
- The substance is indefinitely stable in anhydrous aprotic solvents at temperatures below ca. 150°C.
- Executive summary:
LiBOB salt was dissolved in propylene carbonate under exclusion of air and humidity, i.e. in an Ar-filled glove box. After complete dissolution (ca. 2 h stirring), ca. 1.8 mL samples were transferred inside the glove box to stainless steel vessels from the Radex system. The vessels were closed hermetically and then heated. No guideline followed and no GLP-condiditons, but according to internal procedure of the testing facility.
The substance is indefinitely stable in anhydrous aprotic solvents at temperatures below ca. 150°C.
Reference
Table: Results of isothermal Radex tests. Storage of 17% test substance over 72 hrs at different temperatures in closed stainless steel vessels,
Temperature [°C] |
Optical appearance |
11B-NMR spectroscopic results (share of different peaks, sum = 100 %) |
||
Sample (7.5 ppm) [%] |
Impurity 1 (23 ppm) [%] |
Impurity 2 (5ppm) [%] |
||
r.t. |
clear, colorless |
100 |
0 |
0 |
130 |
clear, colorless |
100 |
0 |
0 |
140 |
clear, colorless |
100 |
0 |
0 |
| 150 | clear, very slightly yellow | 100 | 0 | 0 |
| 170 | clear, very slightly yellow | 100 | 0 | 0 |
| 190 | clear, slightly yellow | 69 | 4 | 0 |
| 200 | clear, brownish | 90 | 9 | 1 |
Description of key information
LiBOB salt was dissolved in propylene carbonate under exclusion of air and humidity, i.e. in an Ar-filled glove box. After complete dissolution (ca. 2 h stirring), ca. 1.8 mL samples were transferred inside the glove box to stainless steel vessels from the Radex system. The vessels were closed hermetically and then heated. No guideline followed and no GLP-condiditons, but according to internal procedure of the testing facility.
The substance is indefinitely stable in anhydrous aprotic solvents at temperatures below ca. 150°C.
Additional information
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