Description

Bis(2,2,6,6-Tetramethyl-1-Piperidinyloxy-4-Yl) Sebacate is a high-performance hindered amine light stabilizer (HALS) of the NOR-HALS type, renowned for its exceptional efficacy in protecting polymers from photo-oxidative degradation. Its primary value lies in providing long-term thermal and light stability, significantly extending the service life of finished products exposed to harsh environmental conditions. This compound is essential for formulators and manufacturers in the plastics, coatings, and synthetic fiber industries who require robust, non-discoloring stabilization for demanding applications.

Application

• Polymer Stabilization: A key additive in polyolefins (PP, PE), engineering plastics, and styrenics to prevent UV-induced chain scission and embrittlement.
• High-Performance Coatings: Used in automotive, industrial, and architectural coatings to maintain gloss, prevent chalking, and retain color integrity.
• Agricultural Films: Critical for greenhouse and mulch films to ensure durability and performance retention under intense, prolonged sunlight.
• Adhesives and Sealants: Enhances the weatherability and longevity of products used in construction and automotive assembly.
• Synthetic Fibers: Incorporated into fibers for outdoor textiles, geotextiles, and automotive interiors to prevent strength loss and fading.
• Masterbatch Production: Supplied as a pure active ingredient for the manufacture of concentrated additive masterbatches.

Basic Information

Product Name	Bis(2,2,6,6-Tetramethyl-1-Piperidinyloxy-4-Yl) Sebacate
CAS No.	2516-92-9
Molecular Formula	C28H52N2O6
Molecular Weight	512.73 g/mol
Synonyms	Bis(1-oxyl-2,2,6,6-tetramethylpiperidin-4-yl) sebacate; Bis(2,2,6,6-tetramethyl-4-piperidinyl-1-oxyl) sebacate; NOR-HALS; Light Stabilizer 770; LS 770; UV-770; Tinuvin 770; Hostavin N 30; Lowilite 77; Sebacate light stabilizer; 4-Piperidinyl-1-oxyl, 2,2,6,6-tetramethyl-, sebacate (2:1)
EINECS	219-750-8

Quality Control

Our production of Bis(2,2,6,6-Tetramethyl-1-Piperidinyloxy-4-Yl) Sebacate adheres to a stringent quality management system. Every batch undergoes comprehensive analytical testing, including HPLC, GC, and spectroscopic methods, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing assay, impurity profile, and physical properties are provided with each shipment. Our quality commitment supports compliance with relevant global regulatory frameworks for polymer additives.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.5%
Melting Point	81 - 85 °C
Loss on Drying	≤ 0.5%
Ash Content	≤ 0.1%
Transmittance (425nm)	≥ 95%
Transmittance (500nm)	≥ 97%

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