Ammonium polyphosphate is an inorganic salt of polyphosphoric acid and ammonia containing both chains and possibly branching. Its chemical formula is [NH4 PO3]n(OH)2 showing that each monomer consists of an orthophosphate radical of a phosphorus atom with three oxygens and one negative charge neutralized by an ammonium cation leaving two bonds free to polymerize. In the branched cases some monomers are missing the ammonium anion and instead link to three other monomers.
The properties of ammonium polyphosphate depend on the number of monomers in each molecule and to a degree on how often it branches. Shorter chains (n1000),[1] but short polymer chains (e.g. pyro-, tripoly-, and tetrapoly-) are more soluble and show increasing solubility with increasing chain length.
Ammonium polyphosphate can be prepared by reacting concentrated phosphoric acid with ammonia. However, iron and aluminum impurities, soluble in concentrated phosphoric acid, form gelatinous precipitates or "sludges" in ammonium polyphosphate at pH between 5 and 7.[3] Other metal impurities such as copper, chromium, magnesium, and zinc form granular precipitates.[4] However, depending on the degree of polymerization, ammonium polyphosphate can act as a chelating agent to keep certain metal ions dissolved in solution.
Ammonium Polyphosphate
We are a leading supplier of electroplating chemicals, industrial polishing and welding consumables, water treatment, powder coating, fertilizers. We stock and carry an extensive range of ready to use chemicals. We deal with so many different chemicals and we would like you to contact us for more information about our different chemicals and products.
We are a leading supplier of electroplating chemicals, industrial polishing and welding consumables, water treatment, powder coating, fertilizers. We stock and carry an extensive range of ready to use chemicals. We deal with so many different chemicals and we would like you to contact us for more information about our different chemicals and products.
Is a nitrogen containing halogen-free environmentally friendly flame retardant, which is a type II polyphosphate. This product has a high degree of polymerization, good thermal stability, low moisture absorption, and low addition amount, can help reducing costs. It is different from halogenated flame retardants. During the combustion process, the product expands the carbon layer to achieve heat insulation and air isolation, to achieve the flame retardant effect. It is low smoke, low toxicity, and no melting droplets. It is an efficient inorganic environmentally friendly flame retardant material. The pH value is close to neutral, without corrosion to production equipment, reducing equipment maintenance costs. It can work synergistically with aluminum hydroxide, resulting in better results Type II polyphosphate has a wide range of applications, including fireproof coatings for buildings, ships, trains, and cables. It is also the main raw material for compounding flame retardants such as plastics and rubber. It is also suitable for materials such as plastics (PP, PE, PVC, etc.), polyester, rubber, and various high-end intumescent fireproof coatings.
It is a nitrogen containing halogen-free environmentally friendly flame retardant, which is a type II polyphosphate. This product has a high degree of polymerization, good thermal stability, low moisture absorption, and low addition amount, can help reducing costs. It is different from halogenated flame retardants. During the combustion process, the product expands the carbon layer to achieve heat insulation and air isolation, to achieve the flame retardant effect. It is low smoke, low toxicity, and no melting droplets. It is an efficient inorganic environmentally friendly flame retardant material. The pH value is close to neutral, without corrosion to production equipment, reducing equipment maintenance costs. It can work synergistically with aluminum hydroxide, resulting in better results Type II polyphosphate has a wide range of applications, including fireproof coatings for buildings, ships, trains, and cables. It is also the main raw material for compounding flame retardants such as plastics and rubber. It is also suitable for materials such as plastics (PP, PE, PVC, etc.), polyester, rubber, and various high-end intumescent fireproof coatings.
Commodity : ammonium Polyphosphate Specification : Appearance : White Powder P Content (wt% ) : 31 Min. N Content (wt% ) : 14 Min. Average Polymerization Degree , n : 1,000 Min Viscosity ( 10% Suspensio, 25oC ), mPa.s : 50 Max PH Value (10% Aqueous Suspension ) : 5.5-7.5 Particle Size (
Ammonium polyphosphate(phase-ii) (cf-app201) Molecular formula : (nh4po3)n n>1000 Cas no.: 68333-79-9 Einecs no.: 269-789-9 Model no.: cf-app201 Ammonium polyphosphate(phase ii) is a non-halogen flame retardant. It acts as flame retardant by intumescence mechanism. When app-ii is exposed to fire or heat, it decomposes to polymeric phosphate acid and ammonia. The polyphosphoric acid reacts with hydroxyl groups to form a nonstable phosphateester. Following dehydration of the phosphateester, a carbon foam is built up on the surface and acts as an insulation layer. Use : In plastics(pp, pvc, pe, etc. ), polyester, rubber, and expandable fireproof coatings. Packing : 25kg woven bag with plastic liner. 25kg woven bag with plastic liner.
Ammonium polyphosphate Appearance White powder Whiteness (reflectance), % 92.0 min Ph, 10% slurry, 25¦ 6.0-7.5 Acid value, mgkoh/1gapp 1.0max Solubility in water , 25¦, g/100mlh2o 0.50 max Total nitrogen, % 14.0-15.0 Phosphorus (as p2o5), % 72.0-74.0 True density, g/cm3 About 1.9 Bulk density, g/cm3 0.6-0.7 Viscosity, 10% slurry, 25¦, mpa.S 80 max Degree of polymerization 1000 min Thermal decomposition onset, scan rate 30¦/min, ¦ 285 min Average particle size, 50%pass, um 5-25 Particle size, 98%pass, um 10-43 Key properties: 1, low water solubility gd-app101 has low water solubility which makes it useful in application where the product is exposed to high humidity conditions or water. 2, high phosphorus content -gd-app101 contains 72.5% phosphorus (as p2o5) which makes it a very effective fire retardant. 3, nearly neutral ph-gd-app101 can be neutralized or brought to the alkaline side by the addition of small amounts od ammonium hydroxide. 4, non-halogen-gd-app101 is a highly effective non-halogen fire retardant. Applications: Gd-app101 is an effective fire retardant for applications such as: 1, intumescent latex and solvent based paints. 2, intumescent mastic, caulks and putties. 3, polymer systems such as polyethylene, polypropylene, polyurethane, 4, rubbers, acrylics, polyterephthalate. 5, building materials such as wall coverings, ceiling tiles, roofing products, wall panels, wood chip board. Fiber drum, kraft bag, woven pvc bag(polyethylene liner)
Ammonium polyphosphate Specification: Phosphorus %(w/w) f31 Nitrogen %(w/w) f14 Ph value (10%suspension) 5.5-7.0 Water content %(w/w) f0.25 Thermal decomposition f+ f275 Density at 25f+ kg/l 1.9 Apparent density kg/l 0.7 Viscosity(25f+ in 10% suspension) mpa.S f100 Solubility in water (g/100cm3) %(w/w) f0.5 Average particle size +m f15 The package is 25kg woven bag inner-lined with pe bag or on customer's request and can be loaded 17.5mt with pallet in one full 20fcl. Hazards identification
Nitrogen %(w/w)14.0 P2O5 %(w/w) 71.0 pH (10% suspension) 5.5 Water %(w/w) f_ 0.25 Decomposition temperature 270 Density 25f¬ g/cm3 f_ 1.9 iscosity (25f¬, 10% suspension) mPa.s f_ 100 Aqueous solubility (g/100cm3water)f_ 0.6 Particle size m f_ 18 PE lined plastic woven bag, net weight 25Kg or PE lined plastic woven bagffcomposite with kraft paper,net weight 25kg.
