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Technical specifications
GLDA-4Na 38% specification
| Test parameters | Standard |
|---|---|
| Content (%) | 38% Min. |
| pH (10g/L, 25℃) | 11.0 — 12.0 |
| NTA (%) | ≤ 0.1% Max. |
| Appearance | Light Yellow Clear Liquid |
GLDA-4Na 47% specification
| Test parameters | Standard |
|---|---|
| Content (%) | 47% Min. |
| pH (10g/L, 25℃) | 11.0 — 12.0 |
| NTA (%) | ≤ 0.1% Max. |
| Appearance | Light Yellow Clear Liquid |
Basic Information
| Parameter | Description |
|---|---|
| Chemical Name | N,N-bis(carboxymethyl)-L-glutamic acid, tetrasodium salt. |
| English name | Tetrasodium Glutamate Diacetate |
| Abbreviation | GLDA-4NA |
| CAS No. | 51981-21-6 |
| Molecular Formula | C9H9NO8Na4 |
| Molecular weight | 351.1 |
| Appearance | Light Yellow Clear Liquid |
| Biodegradability | Yes (OECD 301B test) |
Product description
Product overview
Tetrasodium glutamate diacetate (N,N-bis(carboxymethyl)-L-glutamate tetrasodium, abbreviated GLDA-4Na) is a new biodegradable chelating agent. Product is a clear light-yellow liquid available in two variants: GLDA-4Na content 38% and 47%, pH (10 g/L, 25°C) 11.0-12.0, NTA ≤0.1%. Molecular formula C9H9NO8Na4, molecular weight 351.1, CAS 51981-21-6. GLDA is derived from natural amino acid glutamate, offering excellent chelating ability and complete biodegradability, making it an ideal substitute for traditional chelating agents such as EDTA and NTA.
Key Advantages
- BiodegradableGLDA is completely degraded by microorganisms in the natural environment, consistent with the trend of eco-friendly development.
- High-performance chelationPossesses excellent chelating ability for various metal ions such as Ca²⁺, Mg²⁺, Fe³⁺, Cu²⁺, Zn²⁺.
- Low NTA ContentNTA content ≤0.1%, significantly lower than traditional products, safer and more environmentally friendly.
- Available in Two VariantsAvailable in two concentrations: 38% and 47%, meeting various application needs.
- Good SolubilityLight yellow transparent liquid, easy to mix and use.
- Moderate AlkalinitypH 11.0-12.0, suitable for various formulation systems.
Product advantage comparison
| Characteristics | GLDA-4NA | EDTA |
|---|---|---|
| Biodegradability | Fully biodegradable | Hardly degradable |
| Environmental safety | Eco-friendly | Risk of environmental accumulation |
| Chelating capacity (pH range). | Effective over a wide pH range | Reduced effectiveness at pH >10. |
| Skin irritant effect | Low irritancy | Moderate Irritation |
Area of application
Application recommendations
Laundry, dishwashing and personal care products
Applied in cleaning and personal care products such as liquid and powder laundry detergents, dishwashing liquids, dishwasher detergents, shampoos, shower gels, liquid soaps.
- Chelation of Ca²⁺ and Mg²⁺ ions in water for softening.
- Improves detergency of laundry products
- Scale deposit prevention
- Mild and low-irritating effect on skin
Recommended Dosage:Recommended dosage of GLDA-4Na in laundry powder: 0.5%-2%.
Housekeeping
Used in multi-purpose cleaners, floor cleaners, and other household cleaning products.
- Removal of limescale from hard surfaces
- Enhancement of Detergent Efficiency
- Suitable for various cleaning formulations
- Environmentally friendly formulation
Recommended Dosage:Recommended dosage of GLDA-4Na in household cleaning products: 0.3%-1.5%.
- Store in a dry, well-ventilated area, protected from direct sunlight.
- Stack neatly, handle with care to avoid package damage.
- Packaging: 250 kg drum, 1250 kg IBC container, or as per customer request.
- Avoid storing together with strong acids, strong oxidizers, and other substances.
- When using, it is recommended to wear protective gloves and avoid prolonged skin contact.
- In case of eye contact, immediately flush with plenty of water and seek medical advice.
Frequently asked questions
This product is available in two versions:
- GLDA-4NA 38%Content 38% min., suitable for regular detergent formulations.
- GLDA-4NA 47%Content 47% min., high-concentration version, suitable for applications requiring higher active ingredient content.
Selection recommendation: according to your formulation requirements and application scope, choose the appropriate specification; the high-concentration version can reduce transportation and storage costs.
Product is suitable for export. Provided export documents include:
- Commercial Invoice
- Packing List.
- Certificate of Origin (CO)
- SDS/MSDS (Multilingual Versions)
- Certificate of Analysis (COA).
Specific minimum order quantities (MOQs) and packaging options can be confirmed by contacting our commercial team via the inquiry form.
Shelf life when stored in original sealed packaging in a cool, dry, well-ventilated place is12 monthsStorage conditions:
- Store in a dry, well-ventilated area protected from direct sunlight.
- Careful stacking, gentle handling to avoid packaging damage
- Recommended storage temperature: 5–35 °C
GLDA-4NA has the following advantages over traditional EDTA:
- BiodegradableGLDA is completely biodegradable by microorganisms, aligning with green and eco-friendly development trends, while EDTA is difficult to degrade.
- Environmental friendlinessNo risk of environmental accumulation.
- Low irritancyLess irritating to skin, suitable for personal care products.
- High pH adaptabilityMaintains effective chelating ability over a wide pH range.
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