Description

Uv Absorber Uv-2908 is a high-performance, low-molecular-weight hindered amine light stabilizer (HALS) designed for superior UV protection in demanding polymer applications. This compound effectively scavenges free radicals generated by UV exposure, significantly extending the service life and maintaining the aesthetic properties of plastics and coatings. It is an essential additive for manufacturers in the plastics, automotive, and packaging industries seeking to prevent polymer degradation, color fading, and loss of mechanical strength.

Application

• Primary light stabilizer in polyolefins such as PP (polypropylene) and PE (polyethylene) for outdoor applications.
• Critical additive in automotive coatings and plastics to protect against weathering and preserve gloss and color.
• Enhances the UV resistance of agricultural films, greenhouse covers, and other agrochemical products.
• Used in packaging materials to prevent degradation and maintain clarity and strength under retail lighting.
• Formulation component for industrial coatings, sealants, and adhesives exposed to sunlight.
• Stabilizer for engineering plastics and synthetic fibers to improve long-term durability.

Basic Information

Product Name	Uv Absorber Uv-2908
CAS No.	67845-93-6
Molecular Formula	C20H41N3O2
Molecular Weight	355.57 g/mol
Synonyms	UV-2908; Bis(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate; Bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate; Light Stabilizer 2908; HALS UV-2908; Tinuvin 770; Lowilite 77; Chimasorb 944; Bis(2,2,6,6-tetramethyl-4-piperidinyl) decanedioate
EINECS	Contact for details

Quality Control

Our Uv Absorber Uv-2908 is manufactured under a strict quality management system to ensure batch-to-batch consistency and high performance. Each lot undergoes rigorous analytical testing, including HPLC for assay and purity verification, to meet exacting industry specifications. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	81 - 85 °C
Loss on Drying	≤ 0.5%
Ash Content	≤ 0.1%

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