Description

4,4'-Methylenebis[2,6-Dibromophenol] is a halogenated phenolic compound primarily valued as a highly effective flame retardant and intermediate. Its chemical structure provides excellent thermal stability and bromine content, making it a key component for enhancing fire safety in polymer systems. This product is essential for manufacturers in the plastics, electronics, and construction materials industries seeking to meet stringent fire resistance standards.

Application

• As a reactive or additive flame retardant in epoxy resins, polycarbonates, and other engineering thermoplastics.
• As a chemical intermediate in the synthesis of more complex brominated flame retardants and specialty polymers.
• In the production of printed circuit boards (PCBs) and electronic encapsulants to improve fire safety ratings (e.g., UL 94 V-0).
• For flame-retardant treatments in textiles, coatings, and adhesives where high thermal stability is required.
• In research and development for novel polymer formulations requiring halogenated additives.

Basic Information

Product Name	4,4'-Methylenebis[2,6-Dibromophenol]
CAS No.	21825-03-6
Molecular Formula	C13H8Br4O2
Molecular Weight	561.82 g/mol
Synonyms	2,2'-Methylenebis(4,6-dibromophenol); Tetrabromobisphenol A Derivative; 4,4'-Methylenebis(2,6-dibromophenol); Methylene bis(2,6-dibromophenol); FR-1524; Brominated bisphenol derivative; Phenol, 4,4'-methylenebis[2,6-dibromo-
EINECS	244-617-5

Quality Control

Our production of 4,4'-Methylenebis[2,6-Dibromophenol] adheres to strict quality management protocols. Each batch undergoes comprehensive analytical testing, including assay, impurity profiling, and confirmation of identity, to ensure consistent purity and performance. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. Due to its light-sensitive nature, containers should be kept in the original packaging or opaque containers until use.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	180 - 185 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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