Description

2,2,6,6-Tetramethyl-4-Capryloyl-Oxypiperidine-1-Oxyl is a stable nitroxide radical compound, specifically a hindered amine light stabilizer (HALS) derivative. This compound matters for its exceptional ability to inhibit oxidative degradation and photo-oxidation in polymers, thereby significantly extending the service life of materials exposed to UV light and heat. It is primarily needed by manufacturers in the polymer and plastics industries, as well as in advanced material science for research and development of stabilized formulations.

Application

• As a high-performance light stabilizer (HALS) in polyolefins such as polypropylene (PP) and polyethylene (PE).
• To enhance the UV resistance and thermal stability of engineering plastics, coatings, and adhesives.
• As a key additive in agricultural films to prevent premature embrittlement and cracking from sunlight exposure.
• In the stabilization of automotive parts and exterior components against weathering.
• As a polymerization regulator or mediator in controlled radical polymerization processes (e.g., Nitroxide-Mediated Polymerization - NMP).
• Utilized as a spin label or probe in electron paramagnetic resonance (EPR) spectroscopy for biochemical and material research.
• In the formulation of synthetic fibers and textiles to improve color fastness and durability.

Basic Information

Product Name	2,2,6,6-Tetramethyl-4-Capryloyl-Oxypiperidine-1-Oxyl
CAS No.	22491-88-9
Molecular Formula	C18H34NO3
Molecular Weight	312.47 g/mol
Synonyms	4-Capryloyloxy-2,2,6,6-tetramethylpiperidine-1-oxyl; 4-Octanoyloxy-2,2,6,6-tetramethylpiperidine-1-oxyl; TEMPO Caprylate Ester; 2,2,6,6-Tetramethyl-4-octanoyloxypiperidin-1-yloxy; 4-(1-Oxooctyl)oxy-2,2,6,6-tetramethylpiperidine 1-Oxyl; HALS Derivative; Nitroxyl Radical; Stable Free Radical
EINECS	Contact for details

Quality Control

Our production of 2,2,6,6-Tetramethyl-4-Capryloyl-Oxypiperidine-1-Oxyl adheres to stringent quality management protocols. Each batch undergoes rigorous analytical testing to ensure high purity, consistent performance, and compliance with relevant industry specifications. Certificates of Analysis (COA) detailing purity, assay, and impurity profiles are available upon request to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Keep away from heat sources and incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided.

Specification

Item	Specification
Appearance	Orange to red powder or crystals
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.