Flame Retardant Additives

Flame Retardant Definition

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.

Group Item NameCAS No.Equivalent to Form
BromineBX FR TBBA79-94-7SAYTEX CP-2000Powder
BX FR DBDPO1163-19-5SAYTEX S-102Powder
BX FR DBDPE84852-53-9SAYTEX 8010Powder
BX FR 24525716-60-4FR 245Powder
BX FR 9332588-76-4SAYTEX BT 93Powder
PhosphorusBX FR TPP115-86-6Disflamoll TPLiquid
BX FR BC5294334-64-2BC-52Powder
BX FR BC5871342‐77‐3BC-58Powder
BX FR BDP5945-33-5FP 600Liquid
BX FR BER68928-70-1 Powder
BX FR BPS88497‐56‐7HP3010Powder
BX FR RDP57583-54-7CR-733SLiquid
BX FR TCPP13674-84-5/Liquid
BX FR TCEP51805-45-9/Liquid
BX FR APP68333-79-9484Powder
BX FR OP1230225789-38-8OP1230/1240Powder
BX FR OP935225789-38-8OP930/935Powder
BX FR OP95037640-57-6OP950Powder
BX FR OP1312225789-38-8OP1312Powder
BX FR OP1314225789-38-8OP1314Powder
BX FR OP1400225789-38-8OP1400Powder
NitrogenBX FR MPP218768-84-4Melapur M 200Powder
BX FR MCA37640‐57‐6Melapur MCAPowder
AntimonyBX FR SB231309-64-4/Powder
SiliconBX FR POSS//Powder
BX FR HES63316‐46-8HES-FRPowder
BX FR KSS63316-43-8KSS-FRPowder
BX FR 202529420-49-3.FR-2025Powder


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 applications. However, BFRs have been targeted as an environmental hazard persistence and bio-accumulation, when heated they can also form toxic by-products including 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. The 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.



Chemical name




Aluminum Diethylphosphinate

flame retardant for engineering plastics such as polyamides, polyesters



Aluminum Hypophosphite

FR for Synergistic for PE, PP, PVC, XPS, EPS



Triaryl phosphates

TPP Is a Halogen Free Flame Retardant Plasticizer For Phenolic Resin, Vinyl Resin, And Rubber.



Bisphenol-A bis(diphenyl phosphate)

BDP A Halogen Free Bisphosphate Flame Retardant Used For PC/ABS, PPO/HIPS, and Epoxy Resins. Synonym BAPP



Resorcinol bis(diphenyl phosphate)

RDP is a Halogen Free Phosphate Ester Flame Retardant Used For PC/ABS, PPO/HIPS. Replace FP 600




TCPP Flame Retardant Is Used In the Production of Acetate Fiber, PVC, PU Foams, EVA, and 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, and 3167




Melamine Polyphosphate Flame Retardant Is Mainly Used In PA And PBT, Especially PA6, and PA66.



Piperazine Pyrophosphate

FR for polyolefins, PP



Tris(2-butoxy ethyl) phosphate

Plasticizers, FR



Tris(2-chloroethyl) phosphate

FR for fabrics and cellulose acetate



tris(1,3-dichloropropyl) phosphate

FR for unsaturated polyester, polyurethane foam,


Antimony trioxide flame retardant 

Antimony oxide produces vapor-phase radical scavengers while used as a flame retardant. 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 additives 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 a 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


Flame Retardant Additives by Application

Resin TypeNameTestsApplication
GWFI 960°C
PP products, such as warm air blowers, electrical sockets, wind turbines, and wind drum
PPFR PP V0 AUL94 V-0, DIN 4102 B1, BS 5852,
GB 5455
PP products, also adhesives or sealants, Papers, Coating fabrics
PPFR PP V0 NAUL94 V-0, UL1581 VW-1, GWIT750°C, GWFI 960°CWire, Headphone cable, Plug, Power cable, Rice cooker, Toilet lid, Interior accessories of Bullet train
PPFR PP V2UL94 V-2, GWIT 750°C, GWFI 850°CElectronic appliance socket and structure, auto parts
PPFR PP V2 MBUL94 V-2, GWIT 750°C, GWFI 850°CElectronic appliance socket and structure, auto parts
PEFR PE MB PE extrusion
PAFR PA V0UL94 V-0, GWFI 850°CGlass fiber-reinforced nylon products, such as electrical tools
PBTFR PBT V0UL94 V-0, GWIT 750, GWFI 960°CElectrical socket, Switch, Junction box, etc. made from PBT with FR
TPEFR TPE V0UL1581 VW-1Communication cables, Computer wires, Cell phone charging lines, Earphone wires, Automotive wires, etc.
TPUFR TPU V0UL1581 VW-1Communication cables, Computer wires, Cell phone charging lines, Earphone wires, Automotive wires, etc.
Epoxy EesinFR EP V0UL94 V-0epoxy resin
Fabric CoatingFR FC V0GB 17591 B1,
GB 8965.1 A,
GB 50222 B1,
BS 5852, GB 5455
Fabric coatings, etc.
PaperFR P B1B1Paper, leatherwear, fabric, wood


Click to view and download.

Flame retardant brochure baoxu chemical

plastic additive brochure baoxu chemical


External links

Flame Retardant wikipedia

UL 94 Wikipedia