Flame Retardant Chemicals

Combustion could occur when a substance is heated to its flammable temperature in the presence of oxygen. Flame retardants are generally designed to provide a particular level of resistance to ignition or flame spread. This is achieved by suppressing oxygen availability, building up of char at the surface, inhibiting the combustion reaction within the flame area, or by other mechanisms. Nearly all the present-day commercial FRs and smoke suppressants can be divided into several chemical groups as the table below.

Brominated flame retardant

Halogen flame retardant works in a gas phase and reacts with the radicals formed during the combustion. Chlorine and bromine are the only halogens used as FRs in synthetic plastic formulations since fluorine and iodine are unsuitable for this application. Brominated flame retardants (BFRs) are by far the most widely used FRs as they are more effective, cost less and have wider application. However, BFRs have been targeted as an environmental hazard persistence and bio-accumulation, when heated they can also form toxic by-products includes CO and smoke.

NameCAS No.Chemical nameFeature
TBBA79-94-7Tetrabromobisphenol ATBBA Is A Reactive Flame Retardant Used For Epoxy Resin, ABS, HIPS, etc.
Replace FR-1524, SAYTEX CP-2000, BA-59
TBBPA94334-64-2etrabromobisphenol A
Carbonate Oligomer
TBBPA is a brominated, Aromatic Flame Retardant Used In
PBT, PET, PET/PBT Blends. Replace FR-52, BC-52
DBDPO Is A High Bromine Content Fire Retardant Used In HIPS, PE, PP,
ABS, PBT, UPE, Epoxy, Nylon6, Textiles Etc. Replace FR-1210, DE-83, SAYTEX S-102
DBDPE is A High Bromine Content Flame Retardant for HIPS, PE, PP, ABS,
PBT, UPE, Epoxy. Replace FR-1410,SAYTEX 8010, Firemaster 2100
FR 24525713-60-42,4,6-tris 2,4,6-
tribomophenoxy1,3,5 triazine
FR 245 is a Brominated Cyanurate Flame Retardant,
Mainly Used Is ABS And HIPS.
FR 9332588-76-4Ethylene
Ethylenebistetrabromophthalimide is A White Color FR
With Good Thermal & UV Stability, Non‐Blooming. Replace Saytex BT 93

Nitrogen flame retardant

Nitrogen-containing flame retardants may act by the release of inert gases like ammonia and nitrogen into the gas phase or by condensation reactions in the solid phase.

NameCAS No.Feature
MCA37640-57-6Melamine Cyanurate Is a Halogen‐Free Flame-Retardant For Polyamide Used In
Electrical & Electronic Application. Grade MCA8, MCA15, MCA25

Phosphorus-based flame retardant

PFRs not only react with the radicals like BFRs but are also able to act in the condensed phase by enhancing char formation, yielding intumescence (foaming-up) or formation of inorganic glasses. In fact, PFRs are most commonly known as char formers, because during the burning process they produce phosphoric acids, which, reacting with the substrate, produce a char that acts as a protection of the substrate itself. Most used PFRs are as the table below, their main area of application is in polyamides(PA), polyesters(PET/PBT), polyolefins, and polystyrene (PS) formulations, especially in electrical and electronic insulation components.

NameCAS No.Chemical nameFeature
TPP115-86-6Triaryl phosphatesTPP Is a Halogen Free Flame Retardant For
Phenolic Resin, Vinyl Resin, And Rubber.
BDP5945-33-5Bisphenol-A bis(diphenyl
BDP A Halogen Free Bisphosphate Flame Retardant Used For
PC/ABS, PPO/HIPS, Epoxy Resins. Synonym BAPP
RDP57583-54-7Resorcinol bis(diphenylphosphate)RDP is a Halogen Free Phosphate Ester Flame Retardant Used For
PC/ABS, PPO/HIPS. Replace FP 600
TCPP Flame Retardant Is Used In Production of
Acetate Fiber, PVC, PU Foams, EVA, Phenolics Materials. Replace PCF
APP Is An Ammonium Polyphosphate Flame Retardant Mainly Used In
Plastic, Paint, Coating, Laminates, And Reinforced Materials.  Replace 484, 486, C60, C30, 3167
//Microencapsulated Red
Phosphorus Flame
This Product Has High Ignition Point, High Comparative Tracking Index (CTI Value),
No Frosting, No Moving, And No Corrosion Of Mould.
Melamine Polyphosphate  Flame Retardant Is Mainly Used In
PA And PBT, Especially PA6, PA66.

Antimony trioxide flame retardant 

AAntimony oxide produces vapor-phase radical scavengers while used as flame retardants. Antimony halides appear to form an important link in the radical scavenging cycle during flame retardancy. Antimony trioxide(Sb2O3) and pentoxide(Sb2O5)  are used along with halogen flame retardant additive or halogenated polymers due to their synergistic interaction arising from the formation of antimony trihalide
NameCAS No.Chemical nameFeature
Sb2O31309-64-4antimony trioxide
Sb2O3 Is Used As A Fire Retardant In Rubber, Plastics,
Wire & Cable And Other Composites, Various Purity,

Silicon flame retardant

organo-layered silicate with the ability to incorporate polymers between the layer structures by intercalation or exfoliation. They do not act as flame retardants on their own, but may, together with other flame retardants, enhance the charring and reduce the heat release of the polymer. The only commercial application to date is the cable sector.

NameCAS No.Chemical nameFeature
POSS/Polyhedral Oligomeric
POSS Flame Retardant Is A Silsesquioxane With Excellent Heat Resistance,
Hydrolysis And Weather Resistance.
//Nano siliconeNano-Silicone Is A New Type Of Flame Retardant Treated By Ultra-Fine Nano
Surface Treatment. Excellent Heat, Flame and Hydrolysis Resistance. Recommended For PC, PC/ABS.

Sulfonate flame retardant

KSS FR is the potassium salt of a complex of diphenyl sulfone sulfonate and diphenyl sulfone sulfonate. HES FR is specifically designed for the most effective translucent and opaque PC. It is not intended for transparent PC.

NameCAS No.Chemical nameFeature
HES/sulfonatesHES- FR Is An Efficient Sulfosalt Flame Retardant, Mainly Used In PC, PC/ABS. Replace HES-FR.
KSS63316-43-8Potassium 3-(phenylsulfonyl)
KSS Is An Eco-Friendly Halogen-Free Flame Retardant For PC And PC Alloys. Replace KSS-FR

External links

Flame Retardant wikipedia

UL 94 wikipedia

flame retardant brochure baoxu chemical