European formulators are under pressure. EDTA and phosphonates are facing stricter regulations under REACH and the EU Green Deal. The challenge is finding a chelate that performs as well but disappears from the environment afterwards.

MGDA-Na₃ (Methylglycine diacetic acid) is the answer. It works hard, breaks down completely, and carries no hazardous labelling. Here is what you need to know.

What Is MGDA-Na₃?

MGDA-Na₃ is an amino-acid-based chelating agent built on a natural alanine backbone.

Key specifications:

Why MGDA Stands Out

1. Readily Biodegradable

MGDA passes OECD 301 tests with >60% degradation within 28 days—often >80% in 14 days. EDTA shows virtually no degradation over the same period. For EU Ecolabel and Nordic Swan, this is non-negotiable.

2. Excellent Chelating Performance

MGDA forms strong complexes with calcium, magnesium, iron, copper, and zinc. Recent research in ACS Omega (2025) showed MGDA outperforming GLDA, DTPA, and HEDP for calcium sulphate scale removal.

3. Stable Across pH 2–14

One chelator handles acidic descalers, neutral cleaners, and alkaline laundry liquids.

4. Thermally Stable Above 90°C

Perfect for automatic dishwashing and industrial cleaning.

5. Non-Toxic and Non-Irritating

No hazardous labelling under EU CLP. LD₅₀ >2000 mg/kg. Non-irritating to skin and eyes.

Main Application Areas

Automatic Dishwashing (ADW): MGDA replaces phosphates. It prevents filming on glassware and removes starch and protein soils effectively.

Laundry Detergents: Prevents soap scum, removes blood and milk stains, and works with enzymes.

Industrial & Institutional Cleaning: Descaling (beerstone, milk scale), brewery and dairy equipment.

Water Treatment: Phosphorus-free scale inhibitor for cooling systems.

Oil & Gas: CaSO₄ scale removal (proven in peer-reviewed studies).

The NTA Issue: Why It Matters

NTA (nitrilotriacetic acid) is chemically similar to MGDA but is classified as a suspected carcinogen (H351) under EU CLP. Some MGDA production processes leave trace NTA as an impurity.

For EU Ecolabel, Nordic Swan, or retailer standards (Lidl, Carrefour, Aldi), even trace NTA is unacceptable.

Yuanlian Chemical: NTA-Free MGDA

Yuanlian Chemical produces MGDA-Na₃ with non-detectable levels of NTA. Their manufacturing process eliminates this impurity entirely.

For buyers, this means:

• No regulatory surprises

• No eco-label rejection

• No future reformulation

MGDA vs Traditional Chelators

Practical Formulation Tips

Typical use levels:

• Laundry liquids: 1–5%

• ADW liquids/powders: 2–8%

• Industrial descalers: 5–16%

Compatibility: Works with anionic/non-ionic surfactants, enzymes, preservatives, and bleaches.

Form: Choose liquid for easy blending, powder/granule for dry mixes.

Sourcing MGDA: What to Ask Suppliers

Before buying, request:

1. OECD 301 biodegradability data

2. NTA impurity analysis (non-detectable for eco-labels)

3. REACH registration confirmation

4. Certificate of Analysis (heavy metals, active content)

Yuanlian Chemical at a Glance

Shandong Yuanlian Chemical specialises in biodegradable chelates: MGDA, GLDA, IDS, and PASP.

Advantages for European buyers:

• NTA-free MGDA as standard

• Full REACH documentation

• Competitive pricing (direct from manufacturer)

• Liquid, powder, and granular forms

• Technical support for formulation

The Bottom Line

MGDA-Na₃ is a proven, biodegradable chelating agent that performs as well as EDTA—without the environmental persistence or regulatory headaches.

For European formulators, the key is finding a supplier who offers consistent quality, full compliance documentation, and NTA-free product.

Yuanlian Chemical delivers on all three.