Description

Octabromobisphenol-S is a highly brominated aromatic compound primarily valued for its exceptional flame-retardant properties. This additive is crucial for enhancing the fire safety of various polymer systems without significantly compromising their physical characteristics. It is specifically engineered for use in industries requiring high-performance flame retardancy, such as engineering plastics, textiles, and epoxy resin formulations.

Application

• As a highly effective flame retardant additive for engineering thermoplastics like polycarbonate (PC), acrylonitrile butadiene styrene (ABS), and their blends.
• In the formulation of fire-resistant epoxy resins and coatings for electronic circuit boards and construction materials.
• For enhancing the fire safety of thermoset polyester resins used in fiberglass-reinforced plastics.
• As a key component in flame-retardant masterbatches and compounds for wire and cable insulation.
• In the production of fire-resistant textiles and fabrics for protective clothing and upholstery.
• For use in high-impact polystyrene (HIPS) and other styrenic polymers requiring improved fire performance.
• As a reactive or additive flame retardant in polyurethane (PU) foams and elastomers.

Basic Information

Product Name	Octabromobisphenol-S
CAS No.	42757-55-1
Molecular Formula	C12H2Br8O4S
Molecular Weight	929.59 g/mol
Synonyms	OBPS; Tetrabromobisphenol S Bis(2,3-dibromopropyl) Ether; 2,2',3,3',5,5',6,6'-Octabromo-4,4'-sulfonyldiphenol; 4,4'-Sulfonylbis(2,3,5,6-tetrabromophenol); Phenol, 4,4'-sulfonylbis[2,3,5,6-tetrabromo-; Flame Retardant OBPS
EINECS	255-889-4

Quality Control

Our Octabromobisphenol-S is manufactured under a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including assay, bromine content, and thermal stability verification, to meet exacting industry specifications. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee product integrity and support your quality assurance protocols.

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 oxidizers and heat sources.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Bromine Content	≥ 68.5%
Melting Point	280 - 310 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Particle Size (Typical)	Pass through 200 mesh

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