Solid tetrasodium GLDA salt

Product is suitable for export. Provided export documents include:

• Commercial Invoice
• Packing List
• Certificate of Origin (CO)
• SDS/MSDS (Multilingual Version)
• Certificate of Analysis (COA)

Specific minimum order quantities and packaging options can be clarified by contacting our commercial team via the inquiry form.

Store in original packaging, tightly sealed, in a cool, dry place with good ventilation; shelf life is...12 monthsPrecautions for storage:

• Avoid direct sunlight and moisture
• Avoid contact with sharp objects to prevent damage to the packaging.
• Recommended storage temperature 5–35°C
• Keep the packaging tightly sealed to prevent moisture absorption and caking of the product.

GLDA-4Na is a powerful chelating agent with excellent ability to chelate many metal ions:

• Calcium and Magnesium IonsEffectively softens water, prevents scale formation.
• Iron ionEspecially under high pH conditions, it still effectively chelates ferric ions, preventing discoloration and precipitation.
• Copper and zinc ionsStable in detergent and personal care formulations.
• Manganese ionPrevention of oxidation and discoloration

Its stability constant (log K) is approximately 13–14, providing excellent chelating effect for most divalent and trivalent metal ions.

Solid GLDA-4NA dissolves easily in water, dissolution method is simple:

• Dissolution MethodSlowly add solid to moderately warm water with stirring until dissolved.
• Recommended concentrationTypically used as a 30-40% aqueous solution.
• Dissolution rateDissolves rapidly at room temperature; for faster dissolution, gently warm.
• Safety PrecautionsSlight heat generation may occur during dissolution; this is normal.

The solid form is convenient for storage and transportation, allowing flexible preparation of solutions of various concentrations as needed.

GLDA-4NA is a truly biodegradable chelating agent:

• Degree of DecompositionBiodegradation level exceeds 80% in 28 days, meeting OECD 302B standard.
• Decomposition MechanismFirst decomposes under enzyme action into glutamic acid and acetate intermediates
• Final productFully mineralizes to carbon dioxide, water, and nitrogen, leaving no harmful residues.
• Eco-friendlyPoses no long-term cumulative risk to soil and water bodies, does not affect microbial activity.

GLDA-4NA has excellent compatibility with various surfactants:

• Anionic surfactantFor example, LAS, AES, AOS, etc. Good compatibility, no negative interaction.
• Nonionic surfactantFor example, alkoxylates, good synergistic effect
• Amphoteric SurfactantCompatibility and stability
• Cationic surfactantMust be considered during formulation development; preliminary testing is recommended

Compared to EDTA and NTA, GLDA-4NA does not form insoluble complexes with anionic surfactants, preventing formulation turbidity and reduced efficacy.

This product is a white powder; slight color change may be caused by the following reasons:

• Storage FactorsProlonged exposure to air may cause slight oxidation and discoloration.
• Temperature effectStorage at high temperatures may cause slight darkening of color.
• Hygroscopicity factorHygroscopicity may affect appearance but not quality.

Slight color change does not affect efficacy. In laundry and cleaning formulations, the typical dosage is 0.5-2%, which does not affect the appearance of the final product.

GLDA-4Na itself does not cause metal corrosion, but when used, the following should be considered:

• Storage TankIt is recommended to use containers made of PE, PP, or stainless steel 304/316; avoid using carbon steel and aluminum.
• Transport systemUse stainless steel, plastic, or internally lined pipes to prevent corrosion.
• Mixing PrecautionsAvoid direct mixing with strong acids to prevent local pH drop and corrosion.
• Cleaning recommendationsAfter use, rinse equipment with clean water to prevent concentration of residual solution.

At normal use concentrations (0.5–2%), GLDA-4NA is safe and harmless to materials such as stainless steel and plastic.