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Flame Retardant Brominated 6605 is a brominated flame retardant widely used to enhance the fire resistance of various materials.
Flame Retardant Brominated 6605 is particularly effective in thermoplastics and thermosetting resins, providing high performance in flame retardancy.
A monomer for Flame Retardant Brominated 6605, polyester and polycarboante resins.
CAS: 79-94-7
MF: C15H12Br4O2
MW: 543.87
EINECS: 201-236-9
Synonym
SAFRON 6605; Tetrabromobisphenol A (TBBPA); Tetrabromophthalic anhydride; Dibromoneopentylglycol; Brominated styrene 79-94-7;TETRABROMOBISPHENOL A CARBONATE OLIGOMER;3,5,3',5'-Tetrabromobisphenol A;3,5,3’,5’-tetrabromobisphenola;4,4’-(1-methylethylidene)bis(2,6-dibromo-pheno;4,4’-(1-methylethylidene)bis(2,6-dibromophenol);4,4’-(1-methylethylidene)bis[2,6-dibromo-pheno;4,4’-(1-methylethylidene)bis[2,6-dibromo-Phenol;Great lakes BA-59P
Flame Retardant Brominated 6605 is a bromobisphenol that is 4,4'-methanediyldiphenol in which the methylene hydrogens are replaced by two methyl groups and the phenyl rings are substituted by bromo groups at positions 2, 2', 6 and 6'.
Flame Retardant Brominated 6605 is a brominated flame retardant.
Flame Retardant Brominated 6605 is a brominated flame retardant and a bromobisphenol.
Flame Retardant Brominated 6605 is functionally related to a bisphenol A.
Flame Retardant Brominated 6605 Chemical Properties
Melting point: 178-181 °C(lit.)
Boiling point: 316 °C
Density: 2.1
Vapor pressure: 0Pa at 20℃
Refractive index: 1.5000 (estimate)
Storage temp.: 2-8°C
Solubility: Insoluble
Pka: 8.50±0.10(Predicted)
Color: White to Almost white
Water Solubility: Insoluble
BRN: 1889048
LogP: 5.903-6.31 at 12-25℃
CAS DataBase Reference: 79-94-7(CAS DataBase Reference)
IARC: 2A (Vol. 115) 2018
NIST Chemistry Reference: Phenol, 4,4'-(2,2-propanediyl) bis[2,6-dibromo]-(79-94-7)
EPA Substance Registry System: Tetrabromobisphenol A (79-94-7)
Flame Retardant Brominated 6605 is a white to pale cream or pale yellow crystalline with a moderately high molecular weight, low water solubility, and moderately high lipophilicity (as indicated by log Kow).
Only about 4% of the particles are <15 μm in diameter, and thus, little (<4%) is expected to be respirable (<10 μm in diameter) and absorbed from the lung after inhalation exposure.
Flame Retardant Brominated 6605 is a brominated flame retardant used in a variety of reactive and additive applications.
Flame Retardant Brominated 6605 is reacted (i.e., covalently bound) with epoxy, vinyl esters, and polycarbonate systems (e.g., high impact polystyrene (HIPS), and is used as an additive in acrylonitrile-butadiene-styrene (ABS) thermoplastic resins (Albemarle, 1999).
Flame Retardant Brominated 6605's primary application is in printed wire boards (PWBs) as a reactive flame retardant (BSEF, 2012).
Uses
Flame Retardant Brominated 6605 is widely used as a reactive flame retardant to produce a bromine-containing epoxy resin and polycarbonate, and as intermediates for the synthesis of other complex flame retardant, also as an additive flame retardant for ABS, HIPS, unsaturated polyester rigid polyurethane foams, adhesives and coatings.
Preparation
Flame Retardant Brominated 6605 is prepared by the bromination of bisphenol A in the presence of a solvent.
This reaction may be conducted:
in the presence of a hydrocarbon solvent only or
with water, 50 % hydrobromic acid or aqueous alkyl monoethers.
when methanol is used as the solvent, methyl bromide is formed as a by-product.
The production process is largely conducted in closed systems (WHO/IPCS, 1995).
Application
The main use of Flame Retardant Brominated 6605 is as a reactive flame retardant in epoxy resins for printed circuit boards in computers, telecommunications equipment, industrial controls and automotive electronics.
Both hydroxyl groups on Flame Retardant Brominated 6605 can be reacted with epichlorohydrin under basic conditions to form the diglycidyl ether, which is widely used in epoxy resin formulations.
Flame Retardant Brominated 6605 is also used in polycarbonate and ether polyester resins and is used as a chemical intermediate for the synthesis of tetra-bromobisphenol A allyl ether, -bis(2-hydroxyethyl ether), -carbonate oligomer, and -diglycidyl ether.
Flame Retardant Brominated 6605 is also used as a flame retardant in plastics, paper, and textiles, and as a plasticizer in adhesives and coatings.
Being covalently bound to the polymer limits exposure to unbound excess chemical used in the manufacturing process.
