High-purity tetrasodium glutamate diacetate (GLDA) is an outstanding and environmentally friendly green chelating agent.
Characteristics and Advantages
High-purity GLDA is favored because of its unique advantages:
Green and environmentally friendly, derived from nature: The main raw material for the synthesis of GLDA comes from the natural amino acid - L-glutamic acid, which means that over 48% of the carbon in its products comes from renewable resources. Its most prominent advantage is its excellent biodegradability, which can be rapidly and thoroughly degraded in the natural environment, avoiding the problem of persistent residue of traditional chelating agents (such as EDTA) in the environment [ccitation:10].
Strong chelating ability: The GLDA molecule has four carboxylic acid groups and can form stable complexes with various metal ions such as calcium (Ca²⁺), magnesium (Mg²⁺), and iron (Fe²⁺/³⁺). Its chelating ability is even superior to that of traditional EDTA. More importantly, it can maintain high solubility and high activity within a wide pH range from acidic to alkaline.
Safe and gentle: High-purity GLDA has extremely low irritation to the skin and eyes and is far less corrosive than many traditional chelating agents, which makes it safe to be used in personal care products.
Project | High-purity grade standard (applicable to cosmetics, pharmaceuticals, etc.) |
|---|---|
Chemical name | Tetrasodium Glutamate Diacetate |
Molecular formula | |
Molecular weight | ≈ 351.1 g/mol |
Appearance | White crystalline powder |
Main content | ≥ 98% |
pH value (1% aqueous solution) | 10.5 - 12.0 |
Heavy metals (calculated as Pb) | ≤ 5 ppm |
Biodegradability | > 90% (OECD 301 standard, easily degradable) |
Main application fields
With the above-mentioned characteristics, high-purity GLDA plays a significant role in multiple fields that have high requirements for the purity and safety of raw materials:
Personal care and cosmetics: As a mild chelating agent in shampoos, skin care products, etc., it is used to stabilize the formula, prevent deterioration caused by metal ions, and improve the usage experience in hard water.
Household and industrial cleaners: Used in high-end detergents, dishwashers, etc., they can effectively soften hard water and remove dirt, and are highly favored for their environmentally friendly features.
Water treatment and agriculture: Used in water treatment systems to prevent scale formation; In agriculture, as a chelating agent for trace element fertilizers, it enhances the absorption efficiency of nutrients by plants.
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