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Zinc phosphate

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Zinc phosphate Basic information
Zinc phosphate Chemical Properties
  • Melting point:900°C
  • Density 3.99
  • solubility H2O: insoluble(lit.)
  • form Powder
  • color White
  • OdorOdorless
  • Water Solubility Insoluble in water
  • Merck 14,10151
  • Solubility Product Constant (Ksp)pKsp: 32.04
  • CAS DataBase Reference7779-90-0(CAS DataBase Reference)
  • EPA Substance Registry SystemTrizinc phosphate (7779-90-0)
Safety Information
  • Hazard Codes N
  • Risk Statements 50/53
  • Safety Statements 60-61
  • RIDADR UN 3077 9/PG 3
  • WGK Germany 2
  • RTECS TD0590000
  • TSCA Yes
  • HazardClass 9
  • PackingGroup III
  • ToxicityLD50 intraperitoneal in mouse: 552mg/kg
Zinc phosphate Usage And Synthesis
  • Chemical PropertiesWhite powder.Soluble in acids and ammonium hydroxide; insoluble in water.
  • UsesDental cements; phosphors; conversion coating of steel, aluminum, and other metal surfaces.
  • UsesZinc phosphate (ZP), barium metaborate, and strontium chromate pigments are also common ingredients in corrosion-inhibiting coatings. Thin wash-inhibiting primers are often formulated with chromate or phosphate pigments that are introduced in a synthetic polymeric binder such as a vinyl chloride copolymer. The variety of inorganic corrosion-inhibiting pigments includes also lead carbonate, strontium chromate, zinc oxide, and ZP.
    Zinc phosphate (ZP) is the most commercially successful non-toxic inhibitive pigment used in paint formulations. Furthermore, the use of phosphates does not represent an excessive cost, and their application is even easier than other proposed alternatives for chromate pigments. This is the anticorrosive pigment most frequently used in paints. The massive use of nontoxic and environmentally acceptable ZPs developed an immense pressure for regulations that prohibited the use of red lead and chromated anticorrosion pigments. Experimental results suggest that ZP and all phosphate-based pigments (zinc-aluminum polyphosphate, ZP modified with organic corrosion inhibitor, etc.) exhibit improved anticorrosion efficiency when their concentration is increased.
  • Safety ProfileModerately toxic by intraperitoneal route. When heated to decomposition it emits acrid smoke and irritating fumes.
Zinc phosphate Preparation Products And Raw materials
Zinc phosphate(7779-90-0)Related Product Information
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