BurnEx® ADP494 is a nano-dispersible dry powder colloidal antimony pentoxide formulated for use as synergists with halogenated flame retardants in polymers, solvents, and adhesives.

Chemical Family: Antimony & Antimony Compounds, Oxides

Compatible Polymers & Resins: Acrylonitrile Butadiene Styrene (ABS)

Features: Chemical Stability, Cost Effective, Ease of Handling, Easy Handling, Excellent Chemical Stability, Excellent Penetration, Flame Retardant, Free Flowing, Free-Flowing, Free-flowing, Good Chemical Stability, Good Penetration, Good Suspension Properties, High Capacity of Penetration, High Consistency, Improved Consistency, Improves Consistency, Suspension Stability

Synonyms: Antimonic oxide, Antimony oxide, Antimony oxide (Sb2O5), Antimony pentoxide (Sb2O5), Antimony(V) oxide, Diantimony pentaoxide, Diantimony pentoxide

Technical Data Sheet

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Enhanced TDS

Identification & Functionality

Chemical Family
Chemical Name
CASE Ingredients Functions
Industrial Additives Functions
Plastics & Elastomers Functions
Product Families
Product Form
  • BurnEx® ADP494 is a powder made by spray-drying aqueous solutions of colloidal antimony pentoxide.
  • It is surface-treated to aid dispersion to colloidal size.
  • The product is free-flowing agglomerates.
Product Function
  • BurnEx® ADP494 act as synergist with halogen flame retardant.
  • The nano-sized antimony pentoxide allows greater retention of the original physical properties in most systems.

Features & Benefits

CASE Ingredients Features
Industrial Additives Features
Materials Features
Advantages Over Conventional Antimony Trioxide Systems
  • Low chemical reactivity will not interfere with electroless plating solutions.
  • Non-pigmenting for light transmission and mass tone colors.
  • Disperses to nano-size particles.
  • Free-flowing particles provide exceptional consistency, better mixing and easy processing.
  • Better penetration of the substrate.
  • Less pigmenting or whitening effect for deep mass tone colors.
  • Easier handling and processing: Liquid dispersions will not clog spray guns.
  • High flame retardant efficiency for minimal added weight or change in hand.
  • Greater cost effectiveness and improved color matching in mass tone colors.
  • Translucency for applications such as coatings, films, and laminates.
  • Suspension stability in low viscosity systems.
  • Maintenance of physical properties in thin films and fine denier fibers.

Applications & Uses

Compatible Polymers & Resins
Adhesive & Sealant End Applications
Industrial Additives End Use
Product Uses
  • Solution-spun fibers
  • Epoxy-ketones
  • ABS
  • Surface treatment: Triethanolamine
Handling And Compounding
  • Stable and non-settling dispersions are formed in solvents with gentle mixing. Polymer solutions can be blended with such dispersions and will yield transparent films when dried.
  • BurnEx® ADP480 can be blended into ABS, HIPS and polypropylene in compounding equipment such as a twin screw extruder.
  • BurnEx® ADP480 contain some free and chemically bonded water, it is important that the compounding equipment be vented. In hot melt adhesive applications, some foaming may occur during the initial melt blending.
  • Epoxy resins can be blended with BurnEx ADP494 dissolved in a ketone, and used to completely impregnate a reinforcement to produce a transparent laminate.
Usage Level
  • The usage level of the various grades depends on the material being treated, the test procedure, the ratio of halogen to antimony oxide, and other ingredients being used.
  • It is not possible to predict flame retardance performance; therefore, experimental evaluation is required.
  • Typical ratios of halogen to antimony are 5:1 to 2:1.
  • Typical use levels of antimony pentoxide are 1.5-8%, with a halogen use level range of 5-20%.


Physical Form
White powder
Compatible with
Polar solvents such as acetone, DMAC and DMF
Dispersible in
Non-polar hydrocarbons such as hexane and toluene, Thermoplastics such as polypropylene
Typical Properties
ValueUnitsTest Method / Conditions
Antimony Pentoxide Content74.0wt.%-
Agglomerate Size10 - 40micron-
Ultimate Particle Size0.04micron-
Surface TreatmentEthoxylated amine--

Packaging & Availability

Packaging Type
Packaging Information
  • Size: 15-gallon / 56-liter fiber drum
  • Weight: 150 lb. net/68 kg.