Tetrasodium glutamate diacetate (GLDA)

  • CAS No.- 51981-21-6
  • INCI.- Tetrasodium glutamate diacetate

Tetrasodium Glutamate Diacetate is a chelating agent produced from a naturally occurring amino acid. Tetrasodium Glutamate Diacetate is readily biodegradable with a high level of solubility over a wide pH range and is thus a greener alternative to many other chelates.
Tetrasodium glutamate diacetate is an NTA-free, powerful chelating agent made from natural, biodegradable, renewable raw materials. It can be used as a more sustainable alternative to phosphonates and commonly used chelating agents (NTA and EDTA) in a wide number of applications.

Tetrasodium glutamate diacetate can be used to replace EDTA in a 1:1 ratio in many applications and products. It also does not sensitize human skin and provides enhanced biocidal/preservative boosting power when compared to commonly used boosters such as EDTA and NTA.
It is suitable to be used in personal care and cosmetics products and due to the strong chelating ability of calcium and transition metal ions it can prolong the shelf life of many products.

Dosage level

Recommended concentration 0.1 – 0.5%

Solubility completely soluble in water at all proportions

We suggest adding at the end of formulation or to the water phase


AspectLight yellow liquid
Content%38.0 minimum
pH (1% water solution)11 - 12

Tetrasodium glutamate diacetate is not considered a preservative itself but can act as a preservative booster in many preservative systems.

• Readily biodegradable
• Easy to use
• EDTA and NTA free / non-hazardous / non-toxic



  • Skin Care
  • Toiletries
  • Hair Care
  • Sun Care
  • Makeup
  • Baby Care
  • Oral Care



Natural extracts