Flame Retardants
REACH
Tetrabromobisphenol a
CAS Number
79-94-7
EC Number
201-236-9
Abbreviation
TBBPA
What is Tetrabromobisphenol a?
Tetrabromobisphenol A (CAS 79-94-7), commonly abbreviated as TBBPA, is the most commercially produced brominated flame retardant in the world.
Where is Tetrabromobisphenol a used?
- Electronics: reacted into epoxy resin matrices for FR-4 printed circuit boards, becoming a permanent part of the cured laminate
- Automotive and aerospace: TBBPA-containing polymers meet flammability standards in interior panels, housings and structural parts
- Building and construction: incorporated into ABS, HIPS and polycarbonate compounds for insulation panels, cable sheathing and electrical enclosures
- Plastics compounding: precursor to TBBPA-based epoxy oligomers and carbonate oligomers
- It functions as a reactive or additive flame retardant in polymer systems.
Good to know: The chemical interrupts combustion cycles to prevent ignition and limit fire spread in finished materials.
Commercial specifications
- Technical-grade material, purity typically 97% or higher
- Bulk bags and fiber drums
Other Names (Synonyms)
4,4'-Isopropylidenebis(2,6-dibromophenol)|4,4'-(2,2-propanediyl) bis[2,6-dibromo]phenol|4,4'-(1-Methylethylidene)bis(2,6-dibromophenol)|2,6-dibromo-4-[2-(3,5-dibromo-4-hydroxyphenyl)propan-2-yl]phenol|2,6-dibromo-4-[1-(3,5-dibromo-4-hydroxyphenyl)-1-methylethyl]phenol|2,2-Bis(3,5-dibromo-4-hydroxyphenyl)propane|2,2',6,6'-Tetrabromobisphenol A|3,3',5,5'-Tetrabromobisphenol A|TBBPA
What are the physical properties of Tetrabromobisphenol a?
Melting Point 179-181 °C
Boiling Point 316 °C
Density 220 g/cm³ @ Temp: 4 °C
Appearance white to pale cream or pale yellow crystalline
Color White to Almost white
Form neat
Water Solubility Insoluble
Vapor Pressure 0Pa@20°C
Refractive Index 1.5000 (estimate)
Log P 5.903-6.31 at 12-25℃
How is Tetrabromobisphenol a classified and handled safely? Learn More
Danger
GHS08· Health Hazard GHS09· Environmental Hazard GHS07· Irritant
Hazard Statements
H315 Causes skin irritation
H319 Causes serious eye irritation
H332 Harmful if inhaled
H335 May cause respiratory irritation
Precautionary Statements
P203 Obtain, consult and follow expert instructions for use.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P263 Avoid contact during pregnancy and while nursing.
Which trade and regulatory codes apply to Tetrabromobisphenol a?
HS Code 29081990
UN Number 3077
ADR Class 9
Packing Group III
Storage Class 11 - Combustible Solids
WGK (Germany) 1