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Ain’t 1% or 2% EDTA too much?
In these formulas
All purpose cleaner
Tetrasodium EDTA 2%
http://docs.pilotchemical.com/QMS/Public_Formulary/hc-apc-0002.pdfEconomy laundry detergent
Tetrasodium EDTA 1%
http://docs.pilotchemical.com/QMS/Public_Formulary/hc-ld-0001.pdfEconomy laundry detergent
and 1% each of … tetrasodium EDTA (Versene 220—Dow Chemical)
https://www.happi.com/contents/view_features/2012-04-02/formulating-liquid-laundry-detergentsAin’t 1, 2% EDTA too much?
Does EDTA serve a function other than chelating the few metal ions in the formula? -
2 Replies
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I’m not sure but it seems like in laundry detergent you have a relatively small amount of product diluted by a large amount of water. You’ll probably need a good slug of EDTA to deal with the metal ions in the laundry water.
In cosmetics chelating agents are added to tie up the metal ions in the formula and maybe have a small effect on the water while using the product. In laundry products, the chelators are a part of the cleaning process. At least that’s my guess.
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Imagine a location with hard water, I would presume it could lead to a lot of calcium and magnesium buildup in the machine and on the clothes. Also formation of soap scum from lipase cleavage of triglycerides.
the EDTA or other chelators are of course also needed to allow the detergents to function properly.
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