What does STPP do for laundry?

I should hasten to add that STPP can function not only to prevent the deposition of hard water mineral precipitates on clothes and washer internals, but also to help break away and hold in suspension many of the same hard water minerals that are integral to soil on fabrics – you know, stuff like garden dirt.

What is STPP in detergent powder?

In household cleaning products, sodium tripolyphosphate is used most widely as builder. In conjunction with surfactants, it allows detergents to perform efficiently in all washing conditions. It is widely used in laundry detergents, dishwasher detergents, industrial and institutional detergents.

What is STPP used for?

STPP is a preservative for seafood, meats, poultry, and animal feeds. It is common in food production as E number E451. In foods, STPP is used as an emulsifier and to retain moisture.

What is the purpose of adding sodium tripolyphosphate STPP to laundry detergents?

Sodium tripolyphosphate (STPP) is the most widely used builder and, in conjunction with surfactants, allows modern detergents to perform efficiently in all washing conditions, allowing the use of other essential ingredients to be minimised.

How do you use STPP in liquid soap?

Dissolve the STPP (Sodium Tripolyphosphate) in 1 litre of water before production and keep aside too. (Some people don’t use STPP for whatever reasons best known to them) Mix the Texapon and Sulphonic Acid together. Mix very well and dissolve further with 2 litres of water.

Is washing soda a phosphate?

That said, let’s look at the most obvious differences between sodium carbonate (washing soda) and STPP (complex phosphate). The main problem with sodium carbonate is that it will form a precipitate when it combines with hard water minerals, which is then deposited back on the laundry or on washer parts.

How does STPP look like?

STPP appears to be white or colorless crystals that are water-soluble and flow very well. It is a phosphate chemical that has been used worldwide in both food and industrial grades.

Why are polyphosphates added to detergents?

The most significant feature for the use of PSTP in detergents is its ability to form soluble and strong complexes with calcium and magnesium ions. This provides a strong synergism with regard to detergency when PSTP is used in combination with synthetic surfactants.

Is sodium tripolyphosphate a surfactant?

Sodium Tripolyphosphate is a white powder and is soluble in water. It is a surfactant and is a good emulsifier to lubricants and fat. Sodium Tripolyphosphate is used for water softening, leather making, as a deflocculating agent, food additive, and texturizer.

What are the procedure for making liquid soap?


  1. Add caustic soda solution into the texapon and stir till the whole salt is fully dissolved.
  2. Add the sulphonic acid little at a time till all is added to it.
  3. Continually add water to it and stir until the mixture turns whitish.
  4. Add the dissolved STPP and keep stirring.
  5. Add the dissolved SLS to the content and stir.