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CarCareTruth

Tetrasodium Glutamate Diacetate

  • Chelators
  • CAS 51981-21-6
  • IUPAC: Tetrasodium 2-(1,2-dicarboxylatoethylamino)pentanedioate

Tetrasodium Glutamate Diacetate (CAS 51981-21-6) appears in 5 of the 2,122 car-care products CarCareTruth tracks (as of August 2026). It is on the EPA Safer Choice list.

No GHS health hazard classifications. Non-irritating at use concentrations. EPA Safer Choice approved. Derived from a naturally-occurring amino acid.

Tetrasodium Glutamate Diacetate (trade name Dissolvine GL) is a chelating agent derived from glutamic acid, a naturally occurring amino acid. It improves cleaning performance by sequestering calcium and magnesium ions that would otherwise reduce surfactant efficiency in hard water. Unlike older chelating agents such as EDTA and NTA, tetrasodium glutamate diacetate is readily biodegradable and carries EPA Safer Choice approval. It carries no GHS health hazard classifications and poses minimal environmental risk due to its rapid biodegradation.

Health & environment profile

VOC
no
Prop 65 listed
no
Asthmagen
no
EPA Safer Choice
yes
Aquatic toxicity
no
Biodegradable
yes
Bioaccumulative
no
Persistent
no
Ozone depleting
no
Microplastic
no
PFAS
no
Env. score
5/5
Purpose: Chelating agent and builder that improves cleaning performance by binding calcium and magnesium ions

Common questions about Tetrasodium Glutamate Diacetate

What is Tetrasodium Glutamate Diacetate used for in car care?
Chelating agent and builder that improves cleaning performance by binding calcium and magnesium ions
Is Tetrasodium Glutamate Diacetate a VOC?
No. Tetrasodium Glutamate Diacetate is not classified as a volatile organic compound (VOC).
Is Tetrasodium Glutamate Diacetate on California's Proposition 65 list?
No. Tetrasodium Glutamate Diacetate is not on California's Proposition 65 list.
Is Tetrasodium Glutamate Diacetate EPA Safer Choice certified?
Yes. Tetrasodium Glutamate Diacetate is on the EPA Safer Choice list.

5 products contain this

Related

Health and environment notes translate the manufacturer Safety Data Sheet, the GHS classification, and authoritative regulatory listings (California Prop 65, EPA). Not medical advice. They describe the ingredient itself; whether a hazard applies to a finished product depends on its concentration and how it's used.