Tetrasodium EDTA, also known as tetrasodium ethylenediaminetetraacetic acid, is an important complexing agent and metal masking agent. It can be used in textile industry dyeing, water quality treatment, color sensitization, medicine, daily chemical industry, paper making and other industries.

Tetrasodium EDTA is used as water-softening agents, catalysts of synthetic rubber, printing and dyeing adjuvant, and detergent adjuvant. It is soluble in water and acid, but not soluble in alcohol and other organic solvents.