TEMPO , 98% , 2564-83-2
Synonym(s):
2,2,6,6-Tetramethyl-1-piperidinyloxy, free radical;2,2,6,6-Tetramethylpiperidine 1-oxyl;2,2,6,6-Tetramethylpiperidine-1-oxyl (free radical);Tempo
CAS NO.：2564-83-2
Empirical Formula: C9H18NO*
Molecular Weight: 156.25
MDL number: MFCD00009599
EINECS: 219-888-8
| Pack Size | Price | Stock | Quantity |
| 1G | RMB23.20 | In Stock |
|
| 5G | RMB35.20 | In Stock |
|
| 25G | RMB48.00 | In Stock |
|
| 100G | RMB164.00 | In Stock |
|
| others | Enquire |
PRODUCT Properties
| Melting point: | 36-38 °C(lit.) |
| Boiling point: | 193°C |
| Density | 1 g/cm3 |
| vapor pressure | 0.4 hPa (20 °C) |
| refractive index | 1.4350 (estimate) |
| Flash point: | 154 °F |
| storage temp. | Store below +30°C. |
| solubility | 9.7g/l |
| form | Powder |
| color | Yellow to green |
| PH | 8.3 (9g/l, H2O, 20℃) |
| Water Solubility | Soluble in all organic solvents. Insoluble in water. |
| Merck | 14,9140 |
| BRN | 1422418 |
| Stability: | Stable. Incompatible with strong acids, strong oxidizing agents. Refrigerate. |
| InChIKey | RVWUHFFPEOKYLB-UHFFFAOYSA-N |
| CAS DataBase Reference | 2564-83-2(CAS DataBase Reference) |
| NIST Chemistry Reference | 1-Piperidinyloxy, 2,2,6,6-tetramethyl-(2564-83-2) |
| EPA Substance Registry System | 1-Piperidinyloxy, 2,2,6,6-tetramethyl- (2564-83-2) |
Description and Uses
2,2,6,6-Tetramethylpiperidine is a product that is used for the most diverse purposes because of its strong basicity, for example, as a light stabilizer for polyolefins, as a cocatalyst in olefin polymerizations (Ziegler catalysts), as a building block for the synthesis of pharmaceuticals and crop protection products, as a cocatalyst in the synthesis of dichloroacetyl chloride. The 4-unsubstituted 2.2.6,6-tetramethylpiperidine is generally prepared from the corresponding 4-oxo compound. It is known that triacetonamine can be converted by hydrazine to the hydrazone, which is then cleaved in the presence of alkali into 2,26,6-tetramethylpiperidine and nitrogen.
TEMPO(2,2,6,6-Tetramethylpiperidinooxy) is a stable radical prepared through the oxidation of 2,2,6,6-tetramethylpiperidine. TEMPO has a wide range of applications including use as a free radical scavenger, a reagent in organic synthe sis and as a structural probe in electron spin resonance spectroscopy. TEMPO can also be used as a mediator in free radical polymerization.
Safety
| Symbol(GHS) |  GHS05 |
| Signal word | Danger |
| Hazard statements | H314-H412 |
| Precautionary statements | P260-P273-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338 |
| Hazard Codes | C,Xi |
| Risk Statements | 34-36/37/38 |
| Safety Statements | 26-36/37/39-45-24/25 |
| RIDADR | UN 3263 8/PG 2 |
| WGK Germany | 3 |
| RTECS | TN8991900 |
| Autoignition Temperature | 275 °C |
| TSCA | Yes |
| HazardClass | 8 |
| PackingGroup | III |
| HS Code | 29333999 |
| Limited Quantities | 1.0 L (0.3 gallons) (liquid) or 1 Kg (2.2 lbs) (solid) |
| Excepted Quantities | Max Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml) |
