The Ultimate Buying Guide for Tetrasodium Glutamate Diacetate (GLDA): Choosing the Right Supplier

Introduction

In the evolving landscape of sustainable chemistry, Tetrasodium Glutamate Diacetate (GLDA) has emerged as the premier eco-friendly alternative to traditional chelating agents like EDTA and NTA. As industries from personal care to industrial cleaning shift toward biodegradable solutions, understanding how to source high-quality GLDA is crucial for your product's performance and compliance.

In this guide, we will break down the essential factors to consider when purchasing GLDA and why Yuanlian Chemical stands at the forefront of this green revolution.

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What is Tetrasodium Glutamate Diacetate (GLDA)?

Tetrasodium Glutamate Diacetate ($C^9{H}^{9}NN{a}^4{O}^8$), commonly known as GLDA-Na4, is a high-purity, readily biodegradable chelating agent derived from L-glutamic acid—a natural amino acid.

Unlike legacy sequestrants, GLDA offers:

• High Solubility: Exceptional performance across a wide pH range (from 2 to 14).

• Thermal Stability: Maintains effectiveness even in high-temperature industrial processes.

• Eco-friendly Profile: Non-toxic, phosphate-free, and fully biodegradable.

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4 Key Factors to Evaluate When Buying GLDA

1. Concentration and Purity Levels

Commercial GLDA is typically available in two forms: Liquid (approx. 47%-50% active) and Powder (95%+ active).

• Buyer’s Tip: Always request a COA (Certificate of Analysis) to verify the NTA (Nitrilotriacetic acid) content. High-quality GLDA, such as those produced by Yuanlian Chemical, ensures NTA levels are kept below detectable limits, meeting strict EU and North American safety standards.

2. Chelation Value (Sequestration Power)

The effectiveness of GLDA is measured by its ability to bind metal ions like $C{a}^{2+}$ and $M{g}^{2+}$.

• Check the Calcium Chelation Value (mg $CaC{O}^3$/g). A higher value indicates better efficiency in softening water and boosting surfactant performance.

3. Regulatory Compliance and Certifications

For international trade, compliance is non-negotiable. Ensure your supplier adheres to:

• REACH Registration: Essential for the European market.

• ISO 9001/14001: Demonstrates consistent quality management and environmental responsibility.

• Yuanlian Chemical Advantage: Our production lines are fully certified, ensuring that every batch exported meets global regulatory requirements for personal care and industrial applications.

4. Packaging and Logistics Stability

Since GLDA liquid is highly alkaline (pH 11-12), the packaging must be durable (HDPE drums or IBC tanks). For bulk buyers, the stability of the supply chain is critical. Partnering with a manufacturer like Yuanlian Chemical provides the benefit of direct factory pricing and optimized logistics for sea freight.

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Technical Comparison: GLDA vs. EDTA