How Is Sodium Tripolyphosphate Used In Detergents?

Sodium tripolyphosphate is commonly used as a builder in detergents. As a builder, it helps to soften water by binding with magnesium and calcium ions present in hard water. This reduces the amount of detergent needed to achieve effective cleaning and improves the overall cleaning performance of the detergent.

In addition to its water softening properties, sodium tripolyphosphate also helps to suspend dirt and other particles in the wash solution, preventing them from redepositing on the fabric. It can also enhance the emulsification of oils and greases, allowing them to be more easily removed during the washing process.

However, the use of sodium tripolyphosphate in detergents has come under scrutiny due to concerns over its environmental impact. When released into waterways, it can encourage the growth of algae and contribute to eutrophication, which can harm aquatic ecosystems. As a result, some countries have placed restrictions on the use of sodium tripolyphosphate in detergents or banned it altogether.