+86-18668977520
+86-18668977520
 |
| Quantity: | |
|---|---|
Chemical Name: Manganous Dihydrogen Phosphate
Chemical Synonyms: Mazhef Salt; Acid Manganese Phosphate; Manganese Dihydrogen Phosphate; Manganese Bis(dihydrogen Phosphate)
CAS No.: 18718-07-5
Molecular Formula: Mn(H₂PO₄)₂·2H₂O (dihydrate)
Molecular Weight: 248.91 g/mol (anhydrous) / 284.94 g/mol (dihydrate)
Manganous Dihydrogen Phosphate (CAS 18718-07-5), also widely known as Mazhef Salt or Acid Manganese Phosphate, is an inorganic phosphate salt primarily used as a phosphating agent for steel and iron surfaces. It forms a corrosion-resistant manganese phosphate coating that improves paint adhesion and extends the service life of machinery and components. It is also used as a micro-nutrient fertilizer (manganese source) and in ceramic/glass applications. Available in industrial grade with consistent manganese and phosphate content.
Parameter | Specification |
|---|---|
Product Name | Manganous Dihydrogen Phosphate |
Synonyms | Mazhef Salt; Acid Manganese Phosphate; Manganese Dihydrogen Phosphate; Manganese Bis(dihydrogen Phosphate) |
CAS Number | 18718-07-5 |
Molecular Formula | H₄MnO₈P₂ (anhydrous basis) / Mn(H₂PO₄)₂·2H₂O (dihydrate) |
Molecular Weight | 248.91 g/mol (anhydrous) / 284.94 g/mol (dihydrate) |
EC No. | 242-520-2 |
Appearance | White to pale pink crystalline powder or granules |
Manganese (Mn) Content | ≥14.5% |
P₂O₅ Content | 46–52% |
Water Insoluble Matter | ≤0.1% (high-purity grade) / ≤6% (technical grade) |
pH (1% solution) | 2.5–4.0 |
Grade | Industrial Grade / Technical Grade |
Storage | Cool, dry place, sealed and protected from moisture |
Steel Phosphating (Primary Use): Forms a dense manganese phosphate conversion coating on steel and iron surfaces for corrosion protection and improved paint/coating adhesion. Especially suitable for large machinery and equipment .
Rust Prevention & Lubrication Layer: The phosphating film acts as a lubricating and protective layer for weapons, gears, and moving parts in defense and mechanical industries .
Micro-Nutrient Fertilizer: Manganese source for correcting manganese-deficient soils in agriculture .
Catalyst & Specialty Chemicals: Used as a catalyst or auxiliary in certain organic reactions and as a sensitizer in phosphor production .
Consistent Phosphating Performance: Controlled Mn and P₂O₅ content ensures uniform coating formation and reproducible bath performance.
Cost-Effective Rust Protection: Manganese phosphate coatings offer excellent corrosion resistance and oil-holding capacity, extending component service life.
Multiple Grades Available: Technical grade for general phosphating; higher-purity grades for specialty applications.
Full Documentation: COA and MSDS available upon request.
Hazard Classification: Classified with H315 (skin irritation), H319 (serious eye irritation), and H371/H373 (may cause damage to organs through prolonged or repeated exposure) per some SDS sources .
Handling: Use in a well-ventilated area. Wear protective gloves, eye protection, and face protection. Avoid dust formation and inhalation.
Transport: Generally classified as NONH (not regulated as dangerous goods) for transport .
Standard Packaging: 25 kg / 50 kg in PP woven bags or fiber drums with inner liners, or customized packaging upon request .
Storage Conditions: Store in a tightly closed container in a cool, dry place, protected from moisture. Avoid contact with alkaline substances .
Shelf Life: 24 months under proper storage conditions.
