Ferric Sodium Pyrophosphate

Ferric sodium pyrophosphate or Iron sodium pyrophosphate or Sodium ferric pyrophosphate is used as a nutrient and/or dietary supplement food additive. It is also used to some extent as an iron-enrichment compound in food formulations in animal drugs, feeds, and related products is generally recognized as safe when used in accordance with good manufacturing or feeding practice.

General Properties and Specifications of Ferric sodium pyrophosphate or Iron sodium pyrophosphate or Sodium ferric pyrophosphate:
Appearance: White to yellowish powder.
Assay: 99% minimum.
Relative density: 1.4 to 1.6
Solubility: Insoluble in water. Soluble in hydrochloric acid.

Sodium Ferric Pyrophosphate FCC Food Grade:
Sodium Iron Pyrophosphate
Na8Fe4(P2O7)5·xH2O Formula weight, anhydrous 1277.02
CAS: 1332-96-3

DESCRIPTION
Sodium Ferric Pyrophosphate occurs as a white to tan powder. It is insoluble in water, but is soluble in hydrochloric acid.
Function: Nutrient.

REQUIREMENTS
Identification: Dissolve 500 mg of sample in 5 mL of 1:2 hydrochloric acid, and add an excess of 1 N sodium hydroxide. A red-brown precipitate forms. Age the solution for several minutes, and then filter, discarding the first few milliliters. Add 1 drop of bromophenol blue to 5 mL of the clear filtrate, and titrate with 1 N hydrochloric acid to a green color. Add 10 mL of a 1:8 zinc sulfate solution, and readjust the pH to 3.8 (green color). A white precipitate forms (distinction from orthophosphates).
Assay: Not less than 14.5% and not more than 16.0% 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 8.0%.
Mercury: Not more than 3 mg/kg.

Certifications :
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