Chelating Agents
REACH
Tetrasodium glutamate diacetate
CAS Number
51981-21-6
EC Number
257-573-7
Abbreviation
GLDA
What is Tetrasodium glutamate diacetate?
Tetrasodium glutamate diacetate (CAS 51981-21-6) is a biodegradable chelating agent derived from glutamic acid.
Where is Tetrasodium glutamate diacetate used?
- Personal care: deactivates trace metals that degrade active ingredients
- Industrial and institutional cleaning: boosts surfactant efficiency and prevents mineral scale redeposition
- Water treatment: controls metal ion concentrations and inhibits scale formation
- Food-contact and agricultural cleaning: biodegradability supports compliance with environmental regulations
- It binds and sequesters calcium, magnesium, iron, and manganese to prevent interference in formulations.
Good to know: A more sustainable alternative to EDTA and NTA. Specifications vary by supplier; confirm active content, pH range, and impurity limits.
Commercial specifications
- Liquid solution at 47% active content
Other Names (Synonyms)
Tetrasodium N,N-Bis(carboxymethyl)-L-glutamate|5EHL50I4MY|Tetrasodium N,N-bis(carboxylatomethyl)-L-glutamate|DISSOLVINE GL|CHELEST CMG-40|L-Glutamic acid, N,N-bis(carboxymethyl)-, sodium salt (1:4)|L-Glutamic acid, N,N-bis(carboxymethyl)-, tetrasodium salt|N,N-Bis(carboxymethyl)glutamic acid tetrasodium salt|GLDA
What are the physical properties of Tetrasodium glutamate diacetate?
Density 1.466[at 20℃]
Color Light orange to Yellow to Green
Form Colourless Solution
Water Solubility 650g/L at 21℃
Vapor Pressure 80Pa at 20℃
How is Tetrasodium glutamate diacetate classified and handled safely? Learn More
Warning
GHS05· Corrosive GHS07· Irritant
Hazard Statements
H290 May be corrosive to metals
H319 Causes serious eye irritation
H335 May cause respiratory irritation
Precautionary Statements
P234 Keep only in original packaging.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P271 Use only outdoors or in a well-ventilated area.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
Which trade and regulatory codes apply to Tetrasodium glutamate diacetate?
HS Code 2922.49.8000