Description

N,N'-(Methylenedi-p-Phenylene)Bis[3,4,5,6,-Tetrabromophthalimide] is a high-performance brominated flame retardant additive. This compound is valued for its excellent thermal stability and high bromine content, which provides superior flame-retardant efficiency in demanding polymer applications. It is primarily used by formulators and compounders in the plastics, electronics, and construction materials industries seeking to enhance the fire safety of their products while maintaining material performance.

Application

• Primary flame retardant for high-temperature engineering plastics such as PBT, PET, and polyamides (nylons).
• Flame-retardant additive in thermoplastic polyesters used for electrical connectors and components.
• Enhancing fire resistance in epoxy resin systems for printed circuit boards and electronic encapsulants.
• Use in fire-safe wire and cable jacketing compounds.
• Formulation of flame-retardant thermoset composites for construction and transportation.
• Additive for synthetic fibers and textiles requiring flame-retardant properties.

Basic Information

Product Name	N,N'-(Methylenedi-p-Phenylene)Bis[3,4,5,6,-Tetrabromophthalimide]
CAS No.	32588-74-2
Molecular Formula	C29H8Br8N2O4
Molecular Weight	1057.40 g/mol
Synonyms	1,1'-(Methylenedi-4,1-phenylene)bis[3,4,5,6-tetrabromophthalimide]; Bis(3,4,5,6-tetrabromophthalimido)diphenylmethane; Tetrabromobisphenol A bis(tetrabromophthalimide); TBBA-bis(TBPI); FR-245; Saytex BT-93 (Historical Trade Name); Ethylene bis(tetrabromophthalimide) (common misnomer); 1,1'-(Methylenebis(4,1-phenylene))bis(3,4,5,6-tetrabromoisoindoline-1,3-dione)
EINECS	251-118-6

Quality Control

Our flame retardant products are manufactured under strict quality management systems to ensure batch-to-batch consistency and performance reliability. Each lot is tested against key parameters including bromine content, thermal stability, and particle size distribution. Certificates of Analysis (COA) documenting purity and physical specifications 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 sources and incompatible materials. The product is light-sensitive and should be stored away from direct light exposure.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (Bromine Content)	≥ 68.0 %
Melting Point	≥ 450 °C
Volatile Matter	≤ 0.5 %
Particle Size (D50)	Contact for details

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