Description

Disodium 4,4'-(1-Methylethylidene)Bis(2,6-Dibromophenolate) is a high-purity, organobromine chemical compound primarily utilized as a reactive flame retardant intermediate. This compound matters for its ability to be chemically incorporated into polymer backbones, providing durable and non-blooming flame retardancy essential for high-performance materials. Manufacturers in the plastics, electronics, and advanced composite industries need it to develop halogenated flame-retardant polycarbonates, epoxy resins, and other engineering thermoplastics that meet stringent fire safety standards.

Application

• Reactive Flame Retardant for Polycarbonates (PC): Chemically bonded into the polymer chain to provide permanent, non-migrating flame retardancy in transparent and opaque PC grades.
• Epoxy Resin Curing Agent & Modifier: Imparts flame retardant properties to epoxy systems used in electronic encapsulants, printed circuit boards (PCBs), and composite matrices.
• Intermediate for Oligomeric Flame Retardants: Serves as a key building block in the synthesis of oligomeric brominated flame retardants with enhanced thermal stability and performance.
• Engineering Thermoplastics: Used in the modification of polymers like PBT (polybutylene terephthalate), PET (polyethylene terephthalate), and their blends for applications in electrical connectors and automotive components.
• High-Temperature Polymer Additive: Incorporated into specialty polymers requiring V-0 or V-2 UL94 ratings while maintaining mechanical properties at elevated temperatures.

Basic Information

Product Name	Disodium 4,4'-(1-Methylethylidene)Bis(2,6-Dibromophenolate)
CAS No.	59709-84-1
Molecular Formula	C15H10Br4Na2O2
Molecular Weight	605.84 g/mol
Synonyms	Disodium Tetrabromobisphenol A; Disodium TBBPA; Phenol, 4,4'-(1-methylethylidene)bis[2,6-dibromo-, disodium salt; Tetrabromobisphenol A Disodium Salt; TBBPA Disodium Salt; 2,2-Bis(3,5-dibromo-4-hydroxyphenyl)propane Disodium Salt; Disodium 2,2-Bis(3,5-dibromo-4-hydroxyphenyl)propane; Bisphenol A, tetrabromo-, disodium derivative
EINECS	Contact for details

Quality Control

Our Disodium 4,4'-(1-Methylethylidene)Bis(2,6-Dibromophenolate) is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity, reactivity, and performance as a flame retardant intermediate. Certificates of Analysis (COA) detailing assay, impurity profile, and physical specifications are provided to guarantee compliance with your formulation requirements and relevant industry standards.

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). Keep away from strong acids and oxidizing agents. The product is hygroscopic (moisture-sensitive); ensure containers are sealed after use to prevent moisture absorption.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Bromine Content	≥ 52.0%
Moisture (KF)	≤ 1.0%
pH (10% aqueous solution)	9.0 - 11.0
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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