Item	Industrial Grade	Daily Chemical Grade	Spray Tetrasodium	Tetrasodium Dihydrate
Purity (%)	≥99.0	≥99.5	≥99.3	107-109
Chloride (Cl) (%)	≤ 0.01	≤ 0.01	≤ 0.01	≤ 0.01
Sulfate (SO₄, %)	≤ 0.05	≤ 0.05	≤ 0.03	≤ 0.05
Heavy Metals (Pb, %)	≤ 0.001	≤ 0.001	≤ 0.001	≤ 0.001
Iron (Fe, %)	≤ 0.001	≤ 0.001	≤ 0.0005	≤ 0.001
Loss on Drying (%)	≥ 220	≥ 220	≥ 220	≥ 234
Chelation Value (mg CaCO₃/g)	10.5-11.5	10.5-11.5	10.5-12.5	10.5-11.5
NTA (%)	≤ 1.0	≤ 0.1	≤ 3.0	——
Density (g/L)	——	——	600-800	——
Appearance	White Crystal Powder	White Crystal Powder	White Powder	White Crystal Powder

Appearance: Tetrasodium Ethylenediaminetetraacetic acid is typically a white crystalline powder, and the specific appearance can vary slightly depending on the grade.
Chelation Value: Tetrasodium EDTA is a strong chelating agent, and its ability to form stable complexes with metal ions is crucial in various applications such as water treatment, agriculture, and cosmetics.
Purity: The purity of this compound ranges from 99.0% to 99.5%, with the industrial-grade material typically offering the lowest purity level, and the daily chemical grade having higher purity requirements.
Chemical Composition: It contains sodium (Na) and ethylenediaminetetraacetic acid (EDTA), and in the form of dihydrate, it includes water molecules that aid in its solubility and stability.

Tetrasodium EDTA is widely used across various industries due to its chelating properties:

Water Treatment: It helps in softening water by binding to metal ions like calcium and magnesium, preventing scaling and corrosion.
Cosmetics and Personal Care: Used as a stabilizer and preservative by sequestering metal ions that could cause product degradation.
Detergents: It improves the effectiveness of surfactants by binding to metal ions in the water.
Agriculture: In fertilizers, EDTA is used to make micronutrients more available to plants by binding to trace metals.
Industrial Cleaning: It can enhance the cleaning process by removing metal ions from surfaces or solutions.

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