Manganese Dihydrogen Phosphate

Molecular formula：Mn(H₂PO₄)₂
Molecular weight：248.91
CAS No：18718-07-5
Properties：A light pink crystalline powder that dissolves in water and undergoes hydrolysis to form a flocculent precipitate. The solution is acidic, insoluble in alcohol, and hygroscopic.
Application： Mainly used as a phosphating agent for rust prevention of steel, especially suitable for rust prevention of large mechanical equipment, and used as a lubricating layer and protective layer for various weapons in the national defense industry. Used for phosphating treatment of steel products, especially large mechanical equipment, as a phosphating agent, it can have a rust prevention effect. Used as a lubricating and protective layer for various weapons in the defense industry. Fluorescent powder sensitizer.

Indicator Description	Standard Indicators	Inspection Results
Mn %≥	14.5	15.3
Phosphoric acid and phosphate（Calculated as P₂O₃） %≤	46.0-52.0	49.86
SO₄^2- %≤	0.07	0.05
Fe %≤	0.2	0.1
Loss on drying Mn(H₂PO₄)₂ %≤	19.0	18.2
Total acidity % ≥	26.0	26.2
water solubility（3% concentration）	Clear and transparent without impurities	Clear and transparent without impurities

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