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Anti-rust effect of aluminum tripolyphosphate in solution with different pH values,13939-25-8

Anti-rust effect of aluminum tripolyphosphate in solution with different pH values,13939-25-8

Anti-rust effect of aluminum tripolyphosphate in solution with different pH values,13939-25-8
Anti-rust effect of aluminum tripolyphosphate in solution with different pH values,13939-25-8 Anti-rust effect of aluminum tripolyphosphate in solution with different pH values,13939-25-8

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Product Details:
Place of Origin: HEBEI,CHINA
Brand Name: MEI YU
Certification: REACH,SGS,ISO9001
Model Number: 13939-25-8
Payment & Shipping Terms:
Minimum Order Quantity: 5 Tons
Packaging Details: The product is lined with woven or composite kraft paper bags of 25 kg net each.
Delivery Time: 5-8 work days
Payment Terms: L/C, T/T,
Supply Ability: 1000 tons per week
Detailed Product Description
MF: AlH2P3O10 CAS No.: 13939-25-8
EINECS No.: 237-714-9 Molecular weight: 311.8989
Grade Standard: Industrial Classification: Polyphosphate
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aluminium tripolyphosphate

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13939-25-8

Anti-rust effect of aluminum tripolyphosphate in solution with different pH values

 

1.Property:

Aluminum tripolyphosphate can release tripolyphosphate ions (P3O105-) with strong chelating ability. It has a high chelating ability for divalent and trivalent iron ions, forming the main body of iron tripolyphosphate. Complex protective film. This phosphate protective film is difficult to dissolve in water, has high hardness, and has strong adhesion to the substrate metal. It can provide excellent corrosion protection even in the most rusty metal cutting parts; on the other hand, coating The aluminum tripolyphosphate in the membrane reacts with the penetrating water to depolymerize and transform into low-molecular compounds and orthophosphate. The active phosphate ions generated during the depolymerization process can also phosphatize and passivate the surface of the steel metal again. Produce the same excellent passivation protective film. The response is as follows:

Anti-rust effect of aluminum tripolyphosphate in solution with different pH values,13939-25-8 0

2.Usage:

Aluminum tripolyphosphate has different application effects in different pH solutions. Under acidic conditions, it is beneficial to the stability of P3O105-, but at the same time there is also the corrosion reaction of H+ on the iron base, and the corrosion reaction speed is greater than the film formation rate of P3O105- on the iron base, so the iron base cannot be effective for a long time. protection. Alkaline conditions are conducive to the stability of PO43-, and the formed ferrous phosphate (ferrous) passivation film is far less powerful than that of ferrous tripolyphosphate (ferrous), and the effective (covered) area is also smaller. At the same time, there is a competitive reaction of OH-corrosion to iron, so the iron base cannot be effectively protected for a long time.

 

3.Aluminium tripolyphosphate dihydrogen Quality standard:

 

 

Item Data
Whiteness% ≥90
Moisture% ≥2.5
Residueon sieve%(325mesh) ≤0.05
PH 6-7.5
Oil absorption 30±5
P2O5% 48-52
Al2O3% 11-15
SiO2% -----
ZnO% 18-22
Pb % ≤0.01
Cd % ≤0.003
Cr % ≤0.003
Standard Q/84XS02-2015
 
 
Anti-rust effect of aluminum tripolyphosphate in solution with different pH values,13939-25-8 1

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