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Product Description

Houghto-Prep 5469 is a liquid iron phosphate product specifically formulated for a spray wand or immersion cleaning-phosphatizing system requiring higher salt spray resistance. It possesses a blend of biodegradable surfactants that will quickly and completely remove contaminants from iron, steel, galvanized, and aluminum while simultaneously depositing a high quality iron phosphate coating. Houghto-Prep 5469 is a complete, one package system. It requires no pH adjustment or other additives. The control factors built into HoughtoPrep 5469 are essential in eliminating or controlling flash rust.

Houghto-Prep 5469 is used at 1 - 3% by volume at the nozzle for spray wand phosphatizing and 4 to 6% in immersion applications. At these concentrations, the pH of the solution will automatically be in the most effective range. Streaking and flash rusting will be held to a minimum. Product should be used only in areas with adequate ventilation.

Houghto-Prep 5469 can be used in mild steel or better processing equipment.

The solution is controlled in immersion applications using a drop test kit with the following procedure

1. Take a 15 mil sample in a clean beaker or cylinder 
2. Add 3 to 5 drops phenolphthalein indicator. 
3. Titrate with 1.0 N NaOH from clear to pink, counting the drops required to change color. Be sure to swirl the solution while titrating. 
4. See table below for percent Houghto-Prep 5469 in solution

Features & Benefits

  • Multi accelerated for best performance
  • Multi-metal capability
  • Free Rinsing
  • One package system for both cleaning and coating
  • Flash rust is controlled or eliminated