Tetrasodium Glutamate Diacetate (GLDA) – Chelating Agent

Tetrasodium Glutamate Diacetate (GLDA), also known as the green chelating agent GK-GC, is a high-performance, environmentally friendly complexing agent. It is produced from renewable plant-based L-glutamate, making it a sustainable alternative to traditional chelators such as EDTA, NTA, and DTPA.

Key Specifications

• CAS Number: 51981-21-6

• Molecular Formula: C₉H₁₄NNaO₈

• EINECS Number: 257-573-7

• Molecular Weight: 351.1 g/mol

• Appearance: Slightly yellowish liquid

• Purity: ≥ 99% (active content)

Performance Features

• Broad pH compatibility: Fully soluble and stable in both acidic and alkaline media, ensuring reliable performance in diverse formulations.

• Excellent thermal stability: Retains chelating activity even at elevated temperatures.

• High chelating capacity: Forms stable, water-soluble complexes with metal ions. Typical values: 45 mg Ca²⁺/g, 72 mg Cu²⁺/g, and 75 mg Zn²⁺/g of GLDA.

• Synergistic effect: Enhances the efficacy of fungicides and biocides in various systems.

• Mild and safe: Does not irritate skin or eyes, making it suitable for personal care and household products.

• Biodegradable: Readily degrades in the environment, posing no toxic risks to aquatic life.

Applications
GLDA is a versatile ingredient used in:

• Detergents and cleaning agents (liquid and powder)

• Pulp and paper processing auxiliaries

• Textile and printing auxiliaries

• Household chemicals and industrial cleaners

• Personal care products (shampoos, soaps, cosmetics)

• Retarders for gypsum and concrete setting

• Water treatment, boiler cleaning, and oilfield applications

• Aquaculture and pharmaceutical intermediates

Recommended Use Level
Typically 0.5–5% of the total formulation, depending on the required metal ion sequestration.

Packaging & Storage

• Standard packing: 250 kg net per drum (custom packaging available upon request).

• Shelf life: 10 months when stored in a cool, shaded, and dry place.

Safety & Handling
The product is a mild alkaline solution. Avoid contact with eyes and skin. In case of accidental contact, rinse thoroughly with plenty of water. For industrial use only; refer to the Safety Data Sheet (SDS) for detailed precautions.

Why Choose GLDA?
As a green chelating agent, GLDA offers the perfect balance of high performance and environmental responsibility. It meets the growing demand for sustainable chemistry without compromising on efficacy, making it the ideal replacement for less eco-friendly chelators in modern formulations.