Description

3-Dodecyl-7,7,9,9-Tetramethyl-1,3,8-Triazaspiro[4.5]Decane-2,4-Dione is a high-performance hindered amine light stabilizer (HALS) and antioxidant. This compound is critical for enhancing the durability and longevity of polymeric materials by effectively scavenging free radicals and inhibiting photo-oxidative degradation. It is primarily needed by manufacturers in the plastics, coatings, and synthetic fiber industries seeking to protect their products from UV radiation and thermal aging.

Application

• Primary use as a light stabilizer (HALS) in polyolefins such as polypropylene (PP) and polyethylene (PE).
• Essential additive in automotive plastics for interior and exterior components to prevent fading and embrittlement.
• Formulation component for industrial and architectural coatings, including paints and varnishes, to improve weatherability.
• Stabilizer for agricultural films and greenhouse covers to extend service life under intense sunlight.
• Additive in synthetic fibers and textiles to enhance UV resistance.
• Used in adhesives and sealants to maintain performance and integrity under outdoor conditions.
• Stabilizing agent for engineering plastics and polymer blends used in demanding environments.

Basic Information

Product Name	3-Dodecyl-7,7,9,9-Tetramethyl-1,3,8-Triazaspiro[4.5]Decane-2,4-Dione
CAS No.	67778-10-3
Molecular Formula	C₂₅H₄₇N₃O₂
Molecular Weight	421.66 g/mol
Synonyms	Tinuvin 123; Bis(1-octyloxy-2,2,6,6-tetramethyl-4-piperidinyl) sebacate (common mis-association); 1,3,8-Triazaspiro[4.5]decane-2,4-dione, 3-dodecyl-7,7,9,9-tetramethyl-; Dodecyl-Triazaspirodecandione; Light Stabilizer 123; HALS 123; NOR HALS; N-alkoxy hindered amine light stabilizer.
EINECS	Contact for details

Quality Control

Our production of 3-Dodecyl-7,7,9,9-Tetramethyl-1,3,8-Triazaspiro[4.5]Decane-2,4-Dione adheres to strict quality management systems. Every batch is subjected to rigorous analytical testing, including chromatography and spectroscopy, to ensure high purity and consistent performance as a polymer stabilizer. Certificates of Analysis (COA) detailing purity, assay, and impurity profiles are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed to minimize exposure to atmospheric humidity.

Specification

Item	Specification
Appearance	White to off-white powder or flakes
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 10 ppm

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