The Core of Green Chemistry: Tetrasodium Aspartyl Diacetate (ASDA)

Amid tightening environmental regulations and the global shift toward sustainable chemistry, traditional chelating agents face unprecedented challenges. Phosphorus-induced eutrophication and persistent pollutants like EDTA/NTA have accelerated demand for eco-friendly alternatives. Tetrasodium Aspartyl Diacetate (ASDA), with its phosphorus-free, readily biodegradable, and high-efficiency chelation properties, emerges as the next-generation solution for green manufacturing.

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I. What is ASDA? Decoding the Science

Tetrasodium Aspartyl Diacetate (CAS: 34612-80-1), also known as Tetrasodium Iminodisuccinate or ASDA, is synthesized from L-aspartic acid—a natural amino acid. Its molecular formula (C₈H₇NNa₄O₈) underpins exceptional environmental safety.

Key Attributes:

• Physical Profile: Yellowish transparent liquid; Density ≥1.20 g/cm³ (20°C); ≥55% solid content; pH ≥7 (1% aqueous solution).

• Eco-Advantage: Zero phosphorus, >90% biodegradability (OECD 301B), no bioaccumulation.

• Performance: Broad pH stability (1–14), chelates Ca²⁺/Mg²⁺/Fe²⁺ at 550 mg CaCO₃/g.

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II. Applications: Powering Sustainable Industries

ASDA replaces EDTA, DTPA, and STPP across sectors:

1. Home & Personal Care

• Hard water tolerance: Prevents soap scum in detergents.

• Foam stabilization: Enhances lather longevity in shampoos.

• Eco-compliance: Meets EU Detergent Phosphorus Regulation (EC 648/2004).

2. Industrial Cleaning & Water Treatment

• Scale inhibition: Protects RO membranes, boilers, and cooling towers.

• Bleach activator: Stabilizes peroxides in textile cleaning.

• Metal passivation: Reduces corrosion in automotive/industrial fluids.

3. Textile Processing

• Metal ion control: Prevents dye oxidation for uniform coloration.

• Oligomer dispersion: Minimizes fabric contamination during dyeing.

4. Emerging Uses

• Agriculture: Micronutrient chelation in fertilizers.

• Construction: Concrete set retarder.

• Electronics: Wafer cleaning agent in semiconductor fabrication.

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III. Market Outlook: The Rise of Green Chelators

The global chelating agents market (valued at $2.8B in 2022) will reach $3.3B+ by 2028, driven by biodegradable alternatives. China’s 38,000-ton L-aspartic acid output (2022) positions it as a key ASDA supplier. Regulatory tailwinds—including EPA wastewater guidelines and REACH restrictions on EDTA—further boost ASDA adoption.

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IV. Yuanlian Chemical: Innovating Sustainable Solutions

Shandong Yuanlian Chemical delivers high-purity ASDA with:

• ≥550 mg CaCO₃/g chelation capacity

• Non-GMO raw materials

• ISO 14001-certified production

Our green chelator portfolio includes:

• GLDA 

• MGDA 

• IDS

We provide custom formulation support to help brands achieve sustainability targets without compromising performance.

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Conclusion: ASDA—Where Performance Meets Planet

From lab to real-world applications, Tetrasodium Aspartyl Diacetate (ASDA) proves that industrial efficiency and ecological responsibility coexist. As industries worldwide phase out legacy chelators, ASDA offers a future-proof pathway.

Yuanlian Chemical empowers your green transition:
Cleaning redefined. Chemistry respected. Future secured.