Description

Bis(2,2,6,6,-Tetramethyl-4-Piperidyl) Bis[[3,5-Bis(1,1-Dimethylethyl)-4-Hydroxyphenyl]Methyl]Malonate is a high-performance, multifunctional hindered amine light stabilizer (HALS) and antioxidant, widely recognized for its exceptional ability to protect polymers from photo-oxidative degradation and thermal aging. This synergistic molecule is critical for extending the service life and maintaining the mechanical properties and color stability of sensitive materials exposed to harsh environmental conditions. It is an essential additive for manufacturers in the plastics, coatings, and synthetic fiber industries seeking to enhance product durability and performance.

Application

• Polyolefin Stabilization: Primary application in the long-term thermal and UV stabilization of polypropylene (PP) and polyethylene (PE) for automotive parts, agricultural films, and outdoor furniture.
• Engineering Plastics: Used in polyamides (nylon), polyurethanes (PU), and styrenics (ABS, HIPS) to prevent yellowing and embrittlement caused by heat and light exposure.
• Industrial & Automotive Coatings: Provides superior weatherability and gloss retention in clearcoats, topcoats, and refinish paints.
• Adhesives & Sealants: Enhances the durability and performance lifespan of high-value construction and industrial adhesives.
• Synthetic Fibers & Textiles: Protects polypropylene and nylon fibers from degradation during processing and end-use in outdoor applications like geotextiles and synthetic turf.
• Masterbatch Production: A key active component in concentrate form for easy and uniform dispersion into various polymer matrices.

Basic Information

Item	Detail
Product Name	Bis(2,2,6,6,-Tetramethyl-4-Piperidyl) Bis[[3,5-Bis(1,1-Dimethylethyl)-4-Hydroxyphenyl]Methyl]Malonate
CAS No.	56677-69-1
Molecular Formula	C₆₆H₁₀₄N₂O₈
Molecular Weight	1053.5 g/mol
Synonyms	Bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate derivative; Light Stabilizer 119; LS 119; HALS 119; Tinuvin 119; Hostavin 119; Lowilite 119; 2,2,6,6-Tetramethyl-4-piperidyl/3,5-di-tert-butyl-4-hydroxybenzyl malonate copolymer; Bis(1,2,2,6,6-pentamethyl-4-piperidinyl) [[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]methyl]butylmalonate (common alternative naming)
EINECS	Contact for details

Quality Control

Our production of Bis(2,2,6,6,-Tetramethyl-4-Piperidyl) Bis[[3,5-Bis(1,1-Dimethylethyl)-4-Hydroxyphenyl]Methyl]Malonate adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing, including HPLC for assay and impurity profiling, to ensure consistent high purity and performance. Certificates of Analysis (COA) detailing all specifications are provided with each shipment. Our quality commitment supports compliance with global regulatory frameworks, including REACH.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at 15-25°C. This product is hygroscopic (moisture-sensitive) and easily oxidized; therefore, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen) after opening to prevent moisture uptake and oxidation, which can compromise product efficacy.

Specification

Item	Specification
Appearance	White to off-white powder or granules
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Melting Point	140 - 150 °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.