4-Oxo-TEMPO
Synonym(s):4-Oxo-2,2,6,6-tetramethyl-1-piperidinyloxy, free radical
- CAS NO.:2896-70-0
- Empirical Formula: C9H16NO2*
- Molecular Weight: 170.23
- MDL number: MFCD00006187
- EINECS: 220-778-7
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-07-27 17:00:41
What is 4-Oxo-TEMPO?
Description
2,2,6,6-
Chemical properties
Pink Needles
The Uses of 4-Oxo-TEMPO
A spin label for ESR studies
The Uses of 4-Oxo-TEMPO
Free-radical nitroxide spin probe typically used for:
- Redox sources for anodes in lithium secondary batteries
- Free-radical biological studies
- Radical spin-trapping
- Electron paramagnetic resonance studies
- Polymer chemisty and synthesis applications
What are the applications of Application
TEMPONE is a useful spin trap for in vitro experiments
General Description
4-Oxo-TEMPO is formed by the reaction of 2,2,6,6-tetramethyl-4-piperidone (4-oxo-TMP) and 1O2. It is a stable paramagnetic product formed during the irradiation of TiO2 in aqueous suspensions.
Flammability and Explosibility
Non flammable
Properties of 4-Oxo-TEMPO
| Melting point: | 33-38 °C |
| Boiling point: | 299.88°C (rough estimate) |
| Density | 1.0710 (rough estimate) |
| vapor pressure | 2.254Pa at 25℃ |
| refractive index | 1.4640 (estimate) |
| storage temp. | 2-8°C |
| solubility | DMF: 30 mg/ml; DMSO: 30 mg/ml; Ethanol: 30 mg/ml; PBS (pH 7.2): 10 mg/ml |
| form | Needles, Crystals or Crystalline Powder |
| color | Orange |
| Water Solubility | Soluble in water (partly), acetone, DMSO, 100% ethanol, and diethylether. Insoluble in water. |
| BRN | 1818579 |
| CAS DataBase Reference | 2896-70-0(CAS DataBase Reference) |
| NIST Chemistry Reference | 1-Piperidinyloxy, 2,2,6,6-tetramethyl-4-oxo-(2896-70-0) |
| EPA Substance Registry System | 1-Piperidinyloxy, 2,2,6,6-tetramethyl-4-oxo- (2896-70-0) |
Safety information for 4-Oxo-TEMPO
| Signal word | Warning |
| Pictogram(s) |
![]() Environment GHS09 |
| GHS Hazard Statements |
H400:Hazardous to the aquatic environment, acute hazard |
| Precautionary Statement Codes |
P273:Avoid release to the environment. |
Computed Descriptors for 4-Oxo-TEMPO
New Products
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