Description

Octane-1,8-Diyl Bis(2,2,6,6-Tetramethylpiperidine-4-Carboxylate) is a high-performance hindered amine light stabilizer (HALS) of the polymeric type, offering exceptional long-term thermal and UV stability to polymers. Its primary value lies in its ability to effectively inhibit photo-oxidative degradation, thereby significantly extending the service life and maintaining the mechanical properties of finished products. This compound is essential for manufacturers in the plastics, coatings, and synthetic fiber industries who require durable, color-stable materials for demanding outdoor and high-temperature applications.

Application

• Polyolefin Stabilization: A critical additive for protecting polypropylene (PP) and polyethylene (PE) against UV-induced embrittlement, cracking, and color change in automotive parts, agricultural films, and outdoor furniture.
• Engineering Plastics: Used to enhance the weatherability of polyamides (nylon), polycarbonates, and other engineering resins in exterior automotive components and construction materials.
• Coatings and Paints: Provides durable UV protection for industrial coatings, automotive paints, and wood finishes, preventing gloss loss, chalking, and delamination.
• Adhesives and Sealants: Improves the longevity and performance of polyurethane and other polymer-based adhesives and sealants exposed to sunlight.
• Synthetic Fibers: Incorporated into polypropylene and polyethylene fibers for outdoor textiles, geotextiles, and artificial turf to prevent strength loss from sun exposure.
• Wire and Cable Insulation: Protects the polymer jacketing of cables used outdoors or in conduits from degradation caused by heat and UV radiation.

Basic Information

Product Name	Octane-1,8-Diyl Bis(2,2,6,6-Tetramethylpiperidine-4-Carboxylate)
CAS No.	67845-92-5
Molecular Formula	C34H60N2O4
Molecular Weight	560.86 g/mol
Synonyms	Polymeric HALS; Bis(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate; Light Stabilizer 770; LS 770; Tinuvin 770; Hostavin 3050; UV-770; 1,8-Octanedioic acid, bis(2,2,6,6-tetramethyl-4-piperidinyl) ester
EINECS	Contact for details

Quality Control

Our production of Octane-1,8-Diyl Bis(2,2,6,6-Tetramethylpiperidine-4-Carboxylate) adheres to strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for assay and purity, to ensure it meets precise specifications for performance as a light stabilizer. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all relevant parameters. Our quality system is designed to support compliance with global regulatory frameworks, including REACH.

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); the container must be kept tightly sealed to minimize exposure to atmospheric moisture. Keep away from heat sources and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
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.