Tetrasodium EDTA

The main function of tetrasodium EDTA is to decrease reactivity of metal ions in a product, making it an essential ingredient for soap-making. This ingredient is used to make hard water, soft. It can also be used as a preservative in personal care products, preventing the growth of mold and bacteria. It is useful in formulating dry products where total water content needs to be kept to a minimum. Due to its crystallized form it contains less impurities than Versene 100 chelating agent.

Sources

http://www.naturalwellbeing.com/learning-center/tetrasodium_edta/

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