C12H22MnO14 (anhydrous) --- 445.23
Bis(D-gluconato-O1,O2) manganese.
Manganese D-gluconate (1:2).
Dihydrate --- 481.27
Manganese Gluconate is dried or contains two molecules of water of hydration. It contains not less than 98.0 percent and not more than 102.0 percent of C12H22MnO14, calculated on the anhydrous basis.
Identification—
A: A solution (1 in 20) responds to the tests for Manganese.
B: Chromatographic plate test.
Water: Where labeled as the dried form: between 3.0% and 9.0%, the determination being performed by stirring the mixture containing the Test preparation, maintained at a temperature of 50 , for 30 minutes before titrating with the Reagent. Where labeled as the dihydrate: it is between 6.0% and 9.0%.
Chloride: A 1.0-g portion shows no more chloride than corresponds to 0.70 mL of 0.020 N hydrochloric acid (0.05%).
Sulfate: A 2.0-g portion shows no more sulfate than corresponds to 4.0 mL of 0.020 N sulfuric acid (0.2%).
Limit of lead: To pass the test (0.001%).
Heavy metals: the limit is 20 @g per g.
Reducing substances: the limit is 1.0%.
Manganese Gluconate FCC Food Grade
C12H22MnO14·2H2O Formula wt, dihydrate 481.27
C12H22MnO14 Formula wt, anhydrous 445.24
CAS: [6485-39-8]
DESCRIPTION
Manganese Gluconate occurs as a slightly pink powder. The anhydrous form is obtained by spray-drying, and the dihydrate is obtained by crystallization. It is very soluble in hot water and is very slightly soluble in alcohol.
Function: Nutrient.
REQUIREMENTS
Identification:
A. A 1:20 aqueous solution gives positive tests for Manganese.
B: Chromatographic plate test.
Assay: Not less than 98.0% and not more than 102.0% of C12H22MnO14, calculated on the anhydrous basis.
Arsenic: Not more than 3 mg/kg.
Lead: Not more than 2 mg/kg.
Reducing Substances: Not more than 1.0%.
Water: Anhydrous: Between 3.0% and 9.0%; Dihydrate: Between 6.0% and 9.0%.
