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Features
CAS No.: | 7779-90-0 |
Linear Formula: | Zn3(PO4)2 |
Material: | Zinc Phosphate |
Appearance: | White powder and/or chunks |
Modified Zinc Phosphate Description
Zinc phosphate is an inorganic compound with the formula Zn3(PO4)2. This white powder is widely used as a corrosion resistant coating on metal surfaces either as part of an electroplating process or applied as a primer pigment. It has largely displaced toxic materials based on lead or chromium, and by 2006 it had become the most commonly used corrosion inhibitor. Zinc phosphate coats better on a crystalline structure than bare metal, so a seeding agent is often used as a pre-treatment. One common agent is sodium pyrophosphate.
Zinc phosphate has a strong condensation ability in trivalent iron ions. The root ion of this zinc phosphate reacts with the iron cation plate to form a strong protective film with iron phosphate as the main body. This dense passivation film is insoluble in water, featuring high hardness, strong adhesion. It can react with many metal ions to form chromium compounds, and has a good anti-rust effect. The coating made with zinc phosphate has good anti-rust performance that professionally replace lead and chromium.
Zinc phosphate is also a moderately water and acid soluble zinc source for uses compatible with phosphates.
Zinc Phosphate Zn3(PO4)2 Powder Specification
Specifications | Whiteness | Zn3(PO4)2·2H2O (%) | Phosphate (%) | Moisture (%) | Oil Absorption | pH | Water-soluble salt |
I | 85-90 | ≥45 | 20-30 | ≤1.5 | <35 | 6-8 | <0.5 |
II | 85-90 | ≥86 | >38 | ≤1.5 | <35 | 6-8 | <0.5 |
Zinc Phosphate Applications and Related Industries
● Coating material
● Chemical Manufacturing
● Fine Art Materials
● Pigments & Coatings
● Research & Laboratory
● Water Treatment
Chemical Identifiers
Linear Formula | Zn3(PO4)2 |
MDL Number | MFCD00036282 |
EC No. | 231-944-3 |
Beilstein/Reaxys No. | N/A |
Pubchem CID | 24519 |
IUPAC Name | trizinc; diphosphate |
SMILES | [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])(=O)[O-].[O-]P([O-])([O-])=O |
InchI Identifier | InChI=1S/2H3O4P.3Zn/c2*1-5(2,3)4;/h2*(H3,1,2,3,4);/q;3*+2/p-6 |
InchI Key | LRXTYHSAJDENHV-UHFFFAOYSA-H |
Zinc Phosphate Properties (Theoretical)
Compound Formula | O8P2Zn3 |
Molecular Weight | 386.08 |
Appearance | White powder and/or chunks |
Melting Point | 900 °C |
Boiling Point | N/A |
Density | 3.998 g/cm3 |
Solubility in H2O | Insoluble |
Refractive Index | n20/D 1.595 |
Crystal Phase / Structure | Monoclinic |
Exact Mass | 383.69117 |
Monoisotopic Mass | 381.69428 |
Zinc Phosphate Health & Safety Information
Signal Word | Warning |
Hazard Statements | H410 |
Hazard Codes | N |
Precautionary Statements | P273-P501 |
Risk Codes | 50/53 |
Safety Statements | 60-61 |
RTECS Number | TD0590000 |
Transport Information | UN 3077 9/PG III |
WGK Germany | 2 |
GHS Pictograms | GH S09 Environment
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