Dissolvine® GL-38 is glutamic acid, N,N-diacetic acid, tetrasodium salt (GLDA), widely utilized as a chelating agent in various cleaning applications. It is featured in home care and industrial cleaning products including automatic dishwashers, bathroom cleaners, detergents, disinfectants, hard surface cleaners, and metal cleaners.

Chemical Name: Tetrasodium Glutamate Diacetate

CAS Number: 51981-21-6

Labeling Claims: Biodegradable, NTA-free

Technical Data Sheet

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Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses

Markets
Applications
Applicable Processes
Home Care Applications
I&I Cleaning Applications
Product Applications
  • Boosting agent for disinfecting products (with low skin irritation) Improved detergency at high water hardness Hard surface cleaning performance is improved in combination with gluco(hepto)nates Scale removal at high pH Scale inhibitor in laundering and dishwashing applications.
  • Booster for stain removal in dishwashing detergents better than citrates and phosphates Scum inhibitor in bathroom cleaners Improved cleaning & foaming in shampoo applications.
  • Storage stabilization of bleaching agents (perborates/percarbonates) and unsaturated alkyl chain based surfactants. Transport cleaners: Oil and Iron removal at high pH replacement for NTA

Properties

Physical Form
Appearance
Clear liquid
Odor
Slightly ammonia like
Miscible in
Water, low pH, ethylene glycol, 5M NaOH (at 20°C)
Characteristics
ValueUnitsTest Method / Conditions
NTA Contentapprox. 2.5wt%-
Viscosity (at 20°C)approx. 41mPa·s-
Freezing Pointmax. -15°C-
Chemical Oxygen Demand280 - 310mg/g-
Specifications
ValueUnitsTest Method / Conditions
Molecular Weight351.1--
Assaymin. 38.0%Fe-Sequestering Capacity
Densityapprox. 1360kg/m³-
pH (at 1% w/v Aqueous Dilution)11.0 - 12.0--
Theoretical Properties
ValueUnitsTest Method / Conditions
Sequestering Values (Calcium ion, at pH 6 - 14)approx. 45mg metal/g-
Sequestering Values (Copper ion, at pH 2-12)approx. 70mg metal/g-
Sequestering Values (Ferric ion, at pH 2-8)approx. 60mg metal/g-
Sequestering Values (Magnesium ion, at pH 5-10)approx. 25mg metal/g-
Sequestering Values (Manganese ion, at pH 5-10)approx. 60mg metal/g-
Sequestering Values (Zinc ion, at pH 3-12)approx. 70mg metal/g-

Technical Details & Test Data

Density Data

Liquid density The density of the liquid can be used as a quick reference to check the concentration of the material. See Figure 1.

Figure 1: Density of Dissolvine® GL plotted against GLDA-Na4 concentration based on GL-38, GL-47-S and GL Premium.
Dissolvine® GL Premium - Density Data - 1

 

Viscosity Data

Viscosity is an important parameter for handling products and is dependent on concentration and temperature. Figure 2 shows the viscosity of various concentrations of GLDA-Na4 solutions as a function of temperature.

Figure 2: Graph of the viscosity of various concentrations of Dissolvine® GL at different temperatures compared to the viscosity of Dissolvine® GL Premium.
Dissolvine® GL Premium - Viscosity Data - 1

Packaging & Availability

Distribution Rights
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Storage & Handling

Storage & Retest Information

Store in original packing or in PVC, PP, PE, stainless steel or bituminized tanks. Avoid contact with aluminum, zinc, nickel, copper and copper alloys. It is advised to re-test the material after three years of storage.