Molecular Formula: C7H8NO6Na3
Molecular Weight: 271.1
INCI Name: Trisodium Dicarboxymethyl Alaninate
Chemical Names: Methylglycine N,N-diacetic acid, trisodium salt; Trisodium 2-[bis(carboxylatomethyl)amino]propanoate
Product Description
MGDA-Na3, the abbreviation for Trisodium Methylglycinediacetate, is a low molecular weight chelating agent. Its structure is similar to NTA, but it is non-toxic and readily biodegradable. As a novel, phosphorus-free, green, and degradable chelating agent, MGDA-Na3 serves as an excellent replacement for traditional phosphonates, EDTA, and NTA. It is widely suitable for applications including cleaning agents, detergents, the electroplating & electronics industry, oilfield chemical additives, pulping & papermaking additives, textile auxiliaries, daily chemicals, and personal care products.
Physical and Chemical Properties
Applications in Cleaning and Washing
MGDA-Na3 is biodegradable and enhances the cleaning performance of both household and industrial detergents and cleaners.
Fabric Detergents
In heavy-duty laundry detergents, liquid laundry detergents, and soap-based detergents, MGDA is particularly effective against stubborn stains such as natural oils, sebum, blood, milk, ink, dust, and protein.
In formulations containing fatty acids and soap, calcium soap scum can easily form with water hardness ions, depositing on fabric surfaces, causing odor, and reducing wettability. MGDA effectively addresses stains formed by calcium soap and prevents its redeposition.
Phosphorus-Free Dishwasher Detergents
Following global phosphorus restrictions, various phosphate replacement additives have emerged. Phosphorus-free automatic dishwashing detergent formulations can suffer from reduced filming and stain removal performance. Using MGDA helps bridge this performance gap.
For stubborn stains like food starch and protein, MGDA has proven highly effective in commercial phosphorus-free formulations, offering efficient rinsing and superior starch stain removal, especially against tea stains.
Cleaning of Inorganic Deposits
MGDA converts poorly soluble compounds into water-soluble substances, demonstrating excellent dissolving power for inorganic precipitates, with particularly good efficacy on old, dry calcium stains.
1.Cleaning Calcium Carbonate Scale: While acids (e.g., hydrochloric, citric) remove scale by generating CO₂, they are unsuitable for closed or corrosion-sensitive systems. Chelators like MGDA form soluble complexes without these issues and help prevent new scale formation.
2.Cleaning Calcium Phosphate Scale: Insoluble calcium phosphate precipitates, common in dairy processing, are difficult to clean. MGDA's complexing ability for such scale exceeds that of other biodegradable chelating agents.
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