4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy CAS#2226-96-2
4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy CAS#2226-96-2
4-Hydroxy-TEMPO (CAS 2226-96-2) is a multi-functional nitroxide radical. It acts as a potent catalyst for oxidation processes, a reliable stabilizer to prevent polymer degradation, and a crucial spin trap in biochemical studies. Renowned for its excellent stability and high efficiency, this compound boasts exceptional purity.
Melting point | 69-71 °C(lit.) |
Boiling point | 302.58°C (rough estimate) |
density | 1.0402 (rough estimate) |
vapor pressure | 0.025Pa at 20℃ |
refractive index | 1.4350 (estimate) |
Fp | 146°(295°F) |
storage temp. | 2-8°C |
solubility | 1670g/l |
form | Crystals or Crystalline Powder |
pka | 5.07[at 20 ℃] |
color | Orange |
PH | 8.2 (20g/l, H2O, 20℃) |
Water Solubility | soluble |
Merck | 14,9141 |
BRN | 1422990 |
Stability: | Stable. Incompatible with strong oxidizing agents. |
InChIKey | FAPCFNWEPHTUQK-UHFFFAOYSA-N |
LogP | 0.56 at 25℃ |
CAS DataBase Reference | 2226-96-2(CAS DataBase Reference) |
NIST Chemistry Reference | 1-Piperidinyloxy, 4-hydroxy-2,2,6,6-tetramethyl-(2226-96-2) |
EPA Substance Registry System | 1-Piperidinyloxy, 4-hydroxy-2,2,6,6-tetramethyl- (2226-96-2) |
4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy Chemical Properties | |
Hazard Codes | Xn,Xi |
Risk Statements | 22-36/37/38-36/38 |
Safety Statements | 26-36-37/39-36/37/39-27 |
WGK Germany | 1 |
RTECS | TN8991000 |
Autoignition Temperature | 260°C (DIN 51794) |
TSCA | Yes |
HS Code | 29333999 |
Hazardous Substances Data | 2226-96-2(Hazardous Substances Data) |
Toxicity | LD50 oral in rat: 1053mg/kg |
Product Application of 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy CAS#2226-96-2
Industrial Catalyst: A key catalyst enabling the selective oxidation of alcohols to carbonyls (aldehydes, ketones) in chemical manufacturing, ensuring efficient synthesis outcomes.
Polymer Stabilizer: Delivers superior stabilization and antioxidant effects, effectively preventing thermal and oxidative breakdown of polymers and plastics to enhance product durability.
Biochemical Research: A widely utilized stable spin trap and label in Electron Paramagnetic Resonance (EPR) spectroscopy, supporting in-depth investigations of free radicals and molecular dynamics.
Other Applications: Acts as an antioxidant in various systems and serves as a critical precursor for the preparation of other nitroxide derivatives.
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