EDTA tetrasodium salt 99+% Extra Pure

Ethylenediaminetetraacetic acid tetrasodium salt tetrahydrate

What is EDTA Tetrasodium Salt?

Tetrasodium EDTA is the salt formed by the neutralization of ethylenediaminetetraacetic acid with four equivalents of sodium hydroxide (or one equivalent of sodium base). It is a white solid that is readily soluble in water. Commercial samples are often hydrated, e.g. Na4EDTA.4H2O. The properties of solutions produced from the anhydrous and hydrated form are the same, provided they have the same pH.

It is used as a source of the chelating agent EDTA4-. A 1% aqueous solution has a pH of about 11.3. When dissolved in neutral water, it is partially converted to H2EDTA2-. Ethylenediaminetetraacetic acid is produced commercially through the intermediary of tetrasodium EDTA.

The substance is also known as Dissolvine E-39. It is a salt of edetic acid. It has been known since at least 1954. It is sometimes used as a chelating agent.

It is mainly used in cosmetics and hair and skin care products.

It has been used to help formulate a rust, corrosion and scale removal product from ferrous metal, copper, brass and other surfaces.

At a concentration of 6%, it is the main active ingredient in some types of engine cooling system flushes.

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Technical data

EDTA-Na4, EDTA tetrasodium salt
Empirical formula C10H12N2Na4O8 · 4H2O
Molar mass (M) 452.24 g/mol
WCK 1
CAS no. 13235-36-4
EC-No. 603-569-9

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hazard statements
H302 Harmful if swallowed
H318 Causes serious eye damage

Precautionary statements - prevention
P280 Wear protective gloves/protective clothing/eye protection/face protection Precautionary statements - response
P301+P312 IF SWALLOWED: Call a doctor if you feel unwell
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuous ringing