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Coatings Ingredients
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Coatings Ingredients
by SpecialChem
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FR CROS® 487

Technical Datasheet | Supplied by Budenheim
FR CROS® 487 by Budenheim is a phosphorus-based, flame retardant. It is a long-chain ammonium polyphosphate phase II. Above temperatures of 300 °C, it decomposes to polyphosphoric acid and forms a gas layer which minimizes the amount of oxygen available to the substrate. The residual polyphosphate dehydrates polyols, carbohydrates, ROH or RNH containing substances. Subsequently, a heat-protective barrier (intumescence) is foamed up. FR CROS® 487 is used as a catalyst for solvent- and water-based intumescent coatings. These coatings are the ideal fire-protection solution for applications such as paints and coatings on the steel structures of buildings. Ammonium polyphosphates (APP) are key ingredients for intumescent coatings. It has very low solubility in water and is insoluble in organic solvents.
Product Type
Flame Retardants / Fire Retardants > Phosphorus-based
Chemical Composition
Long chain ammonium polyphosphate
CAS Number
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