Eco-Friendly Dishwasher Detergents: The Rise of GLDA & MGDA

In the realm of household appliances, automatic dishwashers have become increasingly common, reflecting a significant market for automatic dishwasher detergents. As of 2013, this market had already reached 2.5 billion Euros, with a vast variety of detergents weighing in at 300,000 tons.

Cleaning efficacy hinges on four critical factors: time, temperature, mechanical action, and chemical action. Among these, the chemical action in automatic dishwasher detergents is more intensive than in hand-washing detergents due to the comparatively lesser mechanical action in automatic dishwashers. This necessitates the inclusion of stronger agents and chelators in automatic dishwasher detergents to achieve desired cleaning outcomes.

In the quest for phosphate-free formulas and considering the adverse effects of EDTA and NTA on the environment and human health, GLDA (Glutamic Acid Diacetic Acid) and MGDA (Methylglycinediacetic Acid) have emerged as optimal choices. These biodegradable chelators excel in removing calcium-bound grease and stains, crucial for eliminating dishware grime.

Substituting STPP (Sodium Tripolyphosphate) involves more than just chelating; it requires synergistic agents like dispersants. When combined with the dispersant Alcoguard 4160, a polyacrylic acid polymer, GLDA achieves the brightest results. Aiming for greener solutions, pairing GLDA with the second-generation dispersant Alcoguard 5941, which boasts a 65% biodegradability rate and maintains efficacy, enhances both sustainability and performance.

This shift towards eco-friendly and efficient dishwasher detergents marks a significant step in reducing environmental impact while maintaining high cleaning standards, with GLDA and MGDA leading the charge.