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What is theBest ratio of surfactant:STTP in liquid laundry detergent if wash water is extremely hard
Which of these three combinations will work in terms of cleaning power if wash water is extremely hard?
Formula A
SLS powder in active 10%
STTP 5%
pH 11Formula B
SLS power in active 7.5%
STPP 7.5%
pH 11Formula C
SLS powder in active 5%
STPP 10%
pH 11Or are you suggesting any other ratio of surfactant/STTP?
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2 Replies
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STPP work as water hardness reducer by capture calcium and magnesium ion, to avoid reacting with your surfactant, so it’s not anti redeposition, just make to sure your surfactant can works
more hard water more STPP,
Just try maximum combination and you can see effectiveness by how much foam can be formed during application, more foam indicate more surfactant still works -
ariepfadli said:STPP work as water hardness reducer by capture calcium and magnesium ion, to avoid reacting with your surfactant, so it’s not anti redeposition, just make to sure your surfactant can works
more hard water more STPP,
Just try maximum combination and you can see effectiveness by how much foam can be formed during application, more foam indicate more surfactant still worksSTPP is soluble up to 14% in water. Do you suggest i use 14% STPP?
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