Ferric Phosphate

Iron (III) phosphate or Ferric phosphate is the inorganic compound with the formula FePO4. Ferric phosphate is used on iron nutritional supplement, it is widely used in egg products, rice products and paste products, etc. It is used as raw materials of ceramic metal glaze, black glaze, antique glaze, etc. It is also used in the manufacture of cathode material of Lithium iron phosphate battery and electro-optic material, etc. Is used in steel and metal manufacturing processes, catalyst and pesticide. Use in food is restricted in some countries.

General Properties and Specifications of Ferric phosphate or Iron (III) phosphate:
Appearance: Yellow-brownish powder.
Content (as Fe) %: 26% to 29% in dihydrate.
Loss on ignition: 20% maximum.
Chloride (as Cl): 3.55% maximum.
Arsenic (as As): 3 ppm maximum.
Lead (as Pb): 4 ppm maximum.
Mercury (as Hg): 3 ppm maximum.
Relative density: about 3.06 anhydrous and 2.87dihydrate.
Melting point: 250C anhydrous.

Ferric Phosphate FCC Food Grade:
Iron Phosphate; Ferric Orthophosphate
FePO4·xH2O --- Formula weight, anhydrous 150.82
CAS: 10045-86-0

DESCRIPTION
Ferric Phosphate occurs as a yellow-white to buff colored powder. It contains from one to four molecules of water of hydration. It is insoluble in water and in glacial acetic acid, but is soluble in mineral acids.
Function: Nutrient.

REQUIREMENTS
Identification: Dissolve 1 g of sample in 5 mL of 1:2 hydrochloric acid, and add an excess of 1 N sodium hydroxide. A red-brown precipitate forms. Boil the mixture, filter to remove the iron, and strongly acidify a portion of the filtrate with hydrochloric acid. Cool, mix with an equal volume of magnesia mixture, and treat with a slight excess of 6 N ammonium oxide. An abundant white precipitate forms. This precipitate, after being washed, turns green-yellow when treated with a few drops of silver nitrate.
Assay: Not less than 26.0% and not more than 32.0% of Fe.
Arsenic: Not more than 3 mg/kg.
Fluoride: Not more than 0.005%.
Lead: Not more than 4 mg/kg.
Loss on Ignition: Not more than 32.5%.
Mercury: Not more than 3 mg/kg.

The Ferric phosphate or Iron (III) phosphate soluble with sodium citrate will have about 11.5 to 15% Fe(III).

Certifications :
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