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MOSINTER Chelating Agent / Biodegradable

GLDA 4Na solid

Tetrasodium Glutamate Diacetate (GLDA-4NA) — white powder, content 75% Min.

CAS No. 51981-21-6
Molecular Formula C9H9NO8Na4
Molecular Weight 351.1
Appearance White powder
pH value (1% solution) 11.0 — 12.0
Quality Assurance
In-House Production
Biodegradable

Technical specifications

Technical Specifications

Test items Standard
Content (%) 75% Min.
pH (1% Solution) 11.0 — 12.0
Appearance White powder

Basic Information

ProjectsDescription
Chemical NameTetrasodium glutamate diacetate
English NameTetrasodium Glutamate Diacetate
AbbreviationGLDA-4NA
CAS No.51981-21-6
Molecular FormulaC9H9NO8Na4
Molecular Weight351.1
AppearanceWhite powder
BiodegradabilityYes (OECD 301B test)

Product Introduction

Product Overview

Tetrasodium Glutamate Diacetate (GLDA-4NA) is a new biodegradable chelating agent. It is a white powder solid with GLDA-4NA content ≥75% and pH (1% solution) 11.0-12.0. GLDA is derived from the natural amino acid glutamic acid, offering excellent chelating ability and complete biodegradability, making it an ideal replacement for traditional chelating agents such as EDTA and NTA.

Core advantages

  • BiodegradableGLDA is fully biodegradable by microorganisms in natural environments, aligning with green and sustainable development trends
  • High-Efficiency ChelationExcellent chelating ability for metal ions including Ca²⁺, Mg²⁺, Fe³⁺, Cu²⁺, and Zn²⁺
  • High-Purity Formula75% high content, higher active ingredient concentration
  • Good SolubilityWhite powder solid, easy to dissolve and use in combination
  • Moderate AlkalinitypH 11.0-12.0, suitable for a variety of formulation systems
  • Convenient transportation and storageSolid form, good stability, easy to package and transport

Product advantage comparison

Features GLDA-4NA EDTA
Biodegradability Fully biodegradable Non-degradable
Environmental Friendliness Eco-friendly Has potential for environmental accumulation
Chelating Capacity (pH Range) Effective across a wide pH range Reduced effectiveness at pH>10
Skin Irritation Low irritation Moderate stimulation

Applicable Scenarios

Laundry washing
Dishwashing Cleaning
Personal Care
Home Cleaning

Application areas

Laundry, Dishwashing & Personal Care

Used in laundry liquid, laundry powder, dish soap, dishwasher detergent, shampoo, body wash, hand wash, and other cleaning and personal care products.

  • Chelates Ca²⁺ and Mg²⁺ ions in water to soften water quality.
  • Enhances detergent cleaning performance
  • Prevents scale deposition
  • Mild and low irritation to skin

Home Cleaning

Used in household cleaning products such as multi-purpose cleaners and floor cleaners.

  • Removes hard water stains
  • Enhances detergent performance
  • Suitable for multiple cleaning formulas
  • Eco-friendly safe formulation design
Storage and Usage Precautions
  • Store in a dry, ventilated warehouse, away from direct sunlight.
  • Stack and handle with care to avoid package damage.
  • Avoid mixing with strong acids, strong oxidizers, and other substances.
  • It is recommended to wear protective gloves during use to avoid prolonged skin contact.
  • If contact with eyes occurs, rinse immediately with plenty of water and seek medical attention.

Frequently Asked Questions

This product supports export. Available export documents include:

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

Contact our commercial team via the inquiry form for specific MOQ and packaging specifications.

Shelf life when stored sealed in original packaging in a cool, dry, well-ventilated place12 monthsStorage precautions:

  • Keep away from direct sunlight and moisture
  • Avoid contact with sharp objects to prevent package damage
  • Recommended storage temperature: 5-35°C
  • Keep packaging sealed to prevent moisture absorption and caking

GLDA-4NA is a powerful chelating agent with excellent chelating ability for various metal ions:

  • Calcium, Magnesium IonsEffectively softens water and prevents scale formation
  • Iron IonEffectively chelates trivalent iron ions even under high pH conditions, preventing discoloration and precipitation
  • Copper, Zinc IonsStable in detergent and personal care formulations.
  • Manganese IonPrevents oxidation and discoloration

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

GLDA-4NA solid dissolves easily in water with a simple method:

  • Dissolution MethodSlowly add the solid to an appropriate amount of warm water while stirring to dissolve.
  • Recommended concentrationUsually prepared as a 30-40% aqueous solution for use
  • Dissolution RateDissolves relatively quickly at room temperature; moderate heating can speed up the process.
  • PrecautionsSlight heat release may occur during dissolution, which is normal.

The solid form is easy to store and transport, and can be flexibly prepared into solutions of different concentrations as needed.

GLDA-4NA is a truly biodegradable chelating agent:

  • Degradation rate28-day biodegradation rate >80%, compliant with OECD 302B standard
  • Degradation MechanismFirst, it is broken down into glutamate and acetate intermediates under the action of enzymes.
  • Final productCompletely mineralizes into carbon dioxide, water, and nitrogen, leaving no harmful residues.
  • Environmentally FriendlyNo long-term accumulation risk to soil and water bodies, does not affect microbial activity

GLDA-4NA exhibits excellent compatibility with a wide range of surfactants

  • Anionic surfactantCompatible with LAS, AES, AOS, etc., with no negative interactions
  • Nonionic surfactantSuch as alkoxylates, good synergistic effect
  • Amphoteric surfactantStable Compatibility
  • Cationic surfactantFormula design requires attention; pre-testing is recommended.

Compared to EDTA and NTA, GLDA-4NA does not form insoluble complexes with anionic surfactants, avoiding formula turbidity and performance degradation.

This product is a white powder; slight discoloration may be due to the following reasons:

  • Storage ConditionsProlonged exposure to air may cause slight oxidation and color change
  • Temperature effectHigh temperature storage may cause slight color darkening
  • Moisture Absorption FactorMoisture absorption may affect appearance but not quality.

Slight color change does not affect performance. In laundry and cleaning formulations, the typical dosage is 0.5-2%, without affecting the final product's appearance.

GLDA-4NA itself is non-corrosive to metals, but precautions should be taken during use:

  • Storage containerPE, PP, and stainless steel 304/316 containers are recommended; avoid carbon steel and aluminum
  • Delivery SystemUse stainless steel, plastic, or pipes lined with anti-corrosion coating.
  • Compatibility NotesAvoid direct mixing with strong acids to prevent corrosion from localized low pH
  • Cleaning RecommendationsRinse the equipment with clean water after use to prevent residual solution concentration.

At normal usage concentrations (0.5-2%), GLDA-4NA is safe for materials such as stainless steel and plastics.

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