Description

4,5,6,7-Tetrabromo-3,3-Bis(3,5-Dibromo-4-Hydroxyphenyl)-1(3H)-Isobenzofuranone is a highly brominated aromatic compound, CAS NO 54175-58-5, valued for its exceptional performance as a flame retardant additive. Its complex molecular structure provides high thermal stability and effective halogen-based flame suppression. This product is essential for manufacturers in the polymer and electronics industries seeking to enhance the fire safety of their materials while maintaining processing characteristics.

Application

• Primary use as a high-efficiency brominated flame retardant in engineering thermoplastics.
• Flame retardant additive for high-impact polystyrene (HIPS), ABS resins, and polyolefins.
• Used in printed circuit boards (PCBs) and electronic encapsulants to meet UL94 standards.
• Component in fire-resistant coatings and paints for industrial applications.
• Additive for wire and cable insulation to improve fire safety ratings.
• Potential intermediate for the synthesis of other specialized brominated compounds.

Basic Information

Item	Details
Product Name	4,5,6,7-Tetrabromo-3,3-Bis(3,5-Dibromo-4-Hydroxyphenyl)-1(3H)-Isobenzofuranone
CAS No.	54175-58-5
Molecular Formula	C20H6Br8O4
Molecular Weight	1057.37 g/mol
Synonyms	1(3H)-Isobenzofuranone, 4,5,6,7-tetrabromo-3,3-bis(3,5-dibromo-4-hydroxyphenyl)-; Tetrabromobisphenol A bis(2,3-dibromopropyl ether) related compound; Brominated phthalide derivative; Saytex HP-7010 analogue; FR-1524; TBBPA-DBPE impurity; 3,3',5,5'-Tetrabromobisphenol A derivative
EINECS	Contact for details

Quality Control

Our production of 4,5,6,7-Tetrabromo-3,3-Bis(3,5-Dibromo-4-Hydroxyphenyl)-1(3H)-Isobenzofuranone adheres to a strict quality management system. Every batch is analyzed to ensure consistent high purity and bromine content, critical for reliable flame retardant performance. Certificates of Analysis (COA) detailing purity, impurity profile, and physical specifications are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials. Recommended storage temperature is 15-25°C. Keep container tightly sealed when not in use to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Bromine Content	≥ 60.0%
Melting Point	300 - 320 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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