Application and production process

intro
Hydroxyethylenediphosphonic acid, also known as HEDP, is a diphosphonate compound used in dish soap, water purification processes, cosmetics and pharmaceutical production. The salt produced by this acid has the formula MnHEDP (M is the cation and n is the number of M, up to 4).
Toxicity
The product is low toxicity, and the LD50 of subcutaneous injection in mice is 486.4mg/kg.
Chemical property
Pure product is white crystal. Industrial products are colorless to light yellow transparent liquid. Soluble in water, soluble in  ethanol. Hydroxyethylenediphosphonic acid is a chemical raw material commonly used in industrial water treatment, household cleaning products and personal care products.
use
This product is the main material for cyanide-free electroplating. The solution of cyanide-free electroplating copper is prepared, and the bonding force of copper layer directly electroplating on sodium iron is good. Smooth coating and good color. General dosage 60% content is 100 ~ 120ml/L. The dosage of copper sulfate is 15 ~ 20g/L. In addition, before electroplating, the plated part is dipped in 1% ~ 2% solution of the product, so that the electroplated part is converted to an activated state, and then electroplating can improve the effect. use Hydroxyethylenediphosphonic acid (HEDP) is a new Chemicalbook type chlorine-free complexing agent, which is used as the main agent for water quality stability in circulating cooling water system and plays the role of corrosion inhibition and scale inhibition. This product is one of the organic polyphosphonic acid class of water pelleting agents, the domestic production of such products there are some varieties, such as amino trimethylphosphonic acid (ATMP) : [CH2PO (OH) 2]3N  tetramethylene  (EDTMP) and so on. Organic polyphosphonic acid is a kind of water treatment agent developed in the late 1960s and identified around the 1970s. The emergence of this kind of treatment agent has made water schistosity technology a big step forward. Compared with organic polyphosphates, organic polyphosphonic acid has the characteristics of chemical stability, hydrolysis resistance, high temperature resistance, small dosage, and scaling reduction. It is a kind of cathodic corrosion inhibitor and a kind of non-chemical equivalent scale inhibitor. When combined with other water treatment agents, it shows an ideal synergistic effect. It has excellent chelation ability for many metal ions such as calcium, magnesium, copper, zinc, etc., and even has a good deactivation effect on inorganic salts such as CaSO4, CaCO3, MgSiO3, etc., so it is widely used in water treatment technology.
use
Phosphorylated reagent for protected serine and pyranose.