EDTA Disodium Powder

Disodium ethylenediaminetetraacetate, also known as EDTA-2Na, is a good chelating agent in chemistry. Its chemical formula is C10H14N2Na2O8, with a molecular weight of 336.206. It has six coordinating atoms and the complex formed is called a chelate. EDTA is often used in complexometric titration, mainly for determining the content of metal ions. EDTA has important applications in industries such as dyes, food, and pharmaceuticals.

Products Description

Chemical name: Sodium disodium ethylenediaminetetraacetic acid
English name: Ethylenediaminetetraacetic acid disodium salt
Alternative names: Ethylenediaminetetraacetic acid disodium; EDTA disodium
Chemical formula: C10H14N2Na2O8
Molecular weight: 336.206
CAS number: 139-33-3
EINECS number: 205-358-3
Melting point: 248 ℃
Water solubility: Soluble in water
Density: 1.01 g/cm³
Appearance: White crystalline powder
Flash point: 325.2 ℃
Applications: Dyes, food, medicines
pH value of aqueous solution: 5.3

Disodium ethylenediaminetetraacetate is a tasteless, odorless or slightly salty white or milky white crystalline or granular powder. It is odorless and tasteless. It can dissolve in water but is extremely insoluble in ethanol. It is an important chelating agent that can chelate metal ions in solutions. It can prevent discoloration, deterioration, turbidity caused by metals and the oxidation loss of vitamin C. It can also enhance the antioxidant properties of oils (trace metals in oils such as iron and copper can promote the oxidation of oils).

Items	Specifications	Analysis results
Appearance	White crystal powder	White crystal powder
Content, %	99.0~101.0	99.7
PH value	4.3~4.7	4.6
Calcium(Ca)	Pass	Pass
Lead(as Pb), mg/kg	≤10	<10
Nitrilotriacetic acid, %	≤0.1	<0.1

Products Application

Among the salts of ethylenediaminetetraacetic acid, the di-sodium salt is the most important. It is an important complexing agent. It is used in chemical copper plating, gold plating, lead-tin alloy plating, electrochemical polishing of steel parts, and the solution before silver plating of copper parts. It can also be replaced by EDTA-Na. It is also used in detergents, liquid soaps, shampoos, agricultural chemical sprays, color-sensitive material rinsing processing bleaching fixing solutions, water purifiers, pH regulators, anti-settling agents, etc. In the polymerization reduction initiation system of styrene-butadiene rubber, EDTA di-sodium serves as a component of the active agent and is mainly used to complex ferrous ions to control the reaction rate of polymerization.

Products Details

EDTA 1

EDTA 4

EDTA 5

Products Qualification

1-25

2-25-tic

4-tic

7-2-tic

11-tic

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