Description

20,20'-(2-Hydroxypropane-1,3-Diyl)Bis[2,2,4,4-Tetramethyl-7-Oxa-3,20-Diazadispiro[5.1.11.2]Henicosan-21-One] is a high-purity, complex spirocyclic compound with a unique molecular architecture. This specialized chemical is valued for its role as a high-performance stabilizer and functional additive in advanced material formulations. It is primarily sought by manufacturers in the polymer, specialty coatings, and pharmaceutical intermediate sectors who require precise molecular control to enhance product longevity and performance under demanding conditions.

Application

• Polymer Stabilizer: Acts as a highly effective light and thermal stabilizer in engineering plastics, polyolefins, and synthetic fibers to prevent degradation and extend service life.
• Specialty Coatings Additive: Incorporated into high-performance automotive, industrial, and UV-curable coatings to improve weatherability, gloss retention, and chemical resistance.
• Pharmaceutical Intermediate: Serves as a key building block in the synthesis of complex active pharmaceutical ingredients (APIs) and diagnostic agents.
• Advanced Material Research: Used in R&D for developing novel polymers, liquid crystals, and other functional materials requiring specific steric and electronic properties.
• Adhesive & Sealant Formulations: Enhances the durability and aging resistance of high-strength adhesives and elastomeric sealants.

Basic Information

Product Name	20,20'-(2-Hydroxypropane-1,3-Diyl)Bis[2,2,4,4-Tetramethyl-7-Oxa-3,20-Diazadispiro[5.1.11.2]Henicosan-21-One]
CAS No.	84256-97-3
Molecular Formula	C₄₈H₈₀N₄O₆
Molecular Weight	809.18 g/mol
Synonyms	Bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate derivative; Light Stabilizer 770; CAS 84256-97-3; 2,2,4,4-Tetramethyl-20-[2-[(2,2,4,4-tetramethyl-7-oxa-3,20-diazadispiro[5.1.11.2]henicosan-21-on-20-yl)methoxy]propoxy]-7-oxa-3,20-diazadispiro[5.1.11.2]henicosan-21-one; HALS derivative (Hindered Amine Light Stabilizer); Spirocyclic amine stabilizer; Bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate analog.
EINECS	Contact for details

Quality Control

Our production of 20,20'-(2-Hydroxypropane-1,3-Diyl)Bis[2,2,4,4-Tetramethyl-7-Oxa-3,20-Diazadispiro[5.1.11.2]Henicosan-21-One] adheres to a rigorous quality management system. Every batch is analyzed to ensure it meets stringent specifications for identity, purity, and performance. A comprehensive Certificate of Analysis (COA) documenting results from HPLC, NMR, and other relevant tests is provided to guarantee traceability and compliance with your technical requirements.

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). Keep away from strong oxidizing agents and excessive heat. The container must be kept tightly sealed due to the hygroscopic (moisture-sensitive) nature of the compound.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Identification (NMR)	Conforms to structure
Assay (HPLC)	≥ 98.5%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
Related Substances (HPLC)	Total impurities ≤ 1.0%

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