Freiclean 41LF is a mild alkaline water-based liquid cleaner and rust inhibitor designed for in-process metal fabrication operations. Freiclean 41LF emulsifies soils and leaves a residue that prevents vapor phase corrosion and leaves a non-hazardous film that can be handled by operators without rinsing. This mild cleaner contains no caustics, phosphates, nitrates or nitrites, or chelators, or Sara 313 reportable ingredients. Freiclean 41LF is ideal for cleaning after machining to remove metal working fluids, stamping lubricants, oils, metal chips and fines. Freiclean 41LF may be used by spray or immersion.
Freiclean 41LF is a mild alkaline water-based liquid cleaner and rust inhibitor designed for in-process metal fabrication operations. Freiclean 41LF emulsifies soils and leaves a residue that prevents vapor phase corrosion and leaves a non-hazardous film that can be handled by operators without rinsing.
Fill the tank ¾ full with water, add the required amount of Freiclean 41LF to reach the desired operating concentration, and fill to the operating level with water. Freiclean 41LF is typically used at 2% to 5% by volume (between 2- 10 gallons/100 gallons). Mix and heat to the operating temperature. For spray applications, the operating temperature is between 80o-170oF with treatment times of 1-2 minutes. For immersion processes, the operating temperature is 130o-175oF with treatment times of 1-10 minutes. Parts should be dried without being rinsed after processing to maintain corrosion protection.
When used as a cleaner, the Freiclean 41LF concentration may be checked by the following free alkali determination.
|Test Parameter||Sample Size||Indicating Solution / Endpoint||Testing Solution||Control Range|
|Free Alkali||10 ml Bath||5 drops IS #3
pink to absence of pink color
|2.4 – 6.0
Add 5 drops of Indicating Solution 3 to the 10ml bath sample and titrate with Testing Solution 20 until the pink color is removed.
% Freiclean 41LF = 0.83 x mL’s. Testing Solution 20
An addition on 300mls of per 100 gallons of working solution will raise the free alkalinity by 0.1 points.
A 4 % solution of Freiclean 41LF will give a reading of approximately 5.0 mL’s.
Freiclean 41LF weighs 8.8 lbs/gal and has a specific gravity of 1.05
Spray: 80-170F Immersion: 130-175F
Cleaning, Metal Protection
Spray or Immersion
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