1-Hydroxyethylidene-1,1-diphosphonic acid powder Raw Materials CAS 2809-21-4

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1-Hydroxyethylidene-1,1-diphosphonic acid powder, also known as HEDP, is a diphosphate compound used in detergents, water purification processes, cosmetics, and pharmaceutical production. 1-Hydroxyethylidene-1,1-diphosphonic acid CAS 2809-21-4 The resulting salt has the chemical formula MnHEDP.

Applications / Functions of 1-Hydroxyethylidene-1,1-diphosphonic acid powder

1. 1-Hydroxyethylidene-1,1-diphosphonic acid Raw Materials is the main material for cyanide-free plating.
2. Phosphorylation reagent, 1-Hydroxyethylidene-1,1-diphosphonic acid powder is used for protected serine and pyranose.

Physicochemical Property of 1-Hydroxyethylidene-1,1-diphosphonic acid powder

1-Hydroxyethylidene-1,1-diphosphonic acid CAS 2809-21-4 is white crystal. Industrial product is colourless to light yellow transparent liquid. Soluble in water, soluble in methanol and ethanol.

Production methodprocess of 1-Hydroxyethylidene-1,1-diphosphonic acid powder

• 1-Hydroxyethylidene-1,1-diphosphonic acid Raw Materials can be produced by mixing phosphorus trichloride with glacial acetic acid, heating and distillation to obtain acetyl chloride (see 00510), and then reacting with phosphinic acid.
• By nucleophilic addition of diethylenetriamine to formaldehyde, the addition product is esterified with the hydrolysis product of phosphorus trichloride and neutralised to give 1-Hydroxyethylidene-1,1-diphosphonic acid powder.

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