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Disodium salt EDTA
Product introduction
Disodium salt EDTA
Product name: EDTA disodium salt, dihydrate
English name: English name: EDTA-2Na (EDTA Na2,EDTA Disodium Salt)
CAS NO.: 6381-92-6; 139-33-3
Molecular formula: C10H14N2Na2O8·2H2O
Molecular weight: 372.2
Structural formula:
Technical index
Item | Index(industrial grade) | Index(food and medical grade) |
Appearance | white crystal powder | white crystal powder |
purity % | ≥99.0 | ≥99.5 |
chelating capacity(mgCaCO3/g, PH=11) | ≥260 | ≥267 |
PH(50g/L 25℃) | 4.0-5.0 | 4.0-5.0 |
sulfate(SO42-)% | ≤0.1 | ≤0.01 |
heavy metal(as Pb)% | ≤0.01 | ≤0.001 |
copper Cu % | ≤0.025 | ≤0.0025 |
ferrum Fe% | ≤0.01 | ≤0.001 |
chlorided (Cl)% | ≤0.01 | ≤0.001 |
Nitrilotriacetic acid NTA% | -- | ≤0.1 |
Properties: It is white crystal powder; hardly soluble in organic solvents, for example, ethyl alcohol and diethyl ether.
Uses: EDTA-2Na is important complexing agent. It is used as fixing bath for bleaching, dyeing auxiliary agent, fiber treatment agent, cosmetics additive, blood anticoagulation, detergent, stabilizing agent, synthetic rubber, polymerization initiator and quantitative analysis agent of heavy metal.
Packaging: 25kg white woven bag lined with inner plastic bag or on demand; avoid unlight, moisture and fire in storage