Tetrasodium EDTA is an additive that enhances the ability of preservatives. Generally used in soapmaking as a water softener to prevent soap scums and bathtub rings by locking up the calcium and magnesium in water.

Same as sodium EDTA. It's a chelating agent (sequestrant – a remover/separator) that reacts with sodium, calcium and magnesium salts found in hard water and makes them water-soluble. Water softener. A bonding agent that links with minerals to prevent them from causing microbial growth.

Preservative that also acts as a sequestering and chelating agent. (Chelating like a claw grabs onto color etc.)

Chelates metal ions.

Used as a chelator to improve formula stability.

Same as sodium EDTA or Na - EDTA. It's a chelating agent (sequestrant) that reacts with sodium, calcium and magnesium salts found in hard water and "makes" them water soluble. Reduces build - up.