Powder detergent formulations have changed over the years, but STPP remains an important raw material in many formulations.
One reason is its ability to work with hard water. Calcium and magnesium ions can affect cleaning performance, while STPP can help control these ions during washing.
Of course, detergent formulations are not the same in every market. Cost, local regulations, product positioning and formulation requirements all influence the choice of builder.
For buyers, this means STPP specifications should be considered together with the final detergent formula rather than treated as a simple commodity purchase.
The right product is the one that fits the formulation and production process.