Sodium percarbonate crystal modifying agent and preparation process thereof

Abstract

A crystallizing modifier of sodium percarbonate is prepared through dissolving phosphate in water, adding Na2EDTA, hydroxyethylene diphosphonic acid, ethyldiamine tetramethylene phosphonic acid and sodium polyacrylate, and stirring.

Description

technical field

[0001] The invention relates to a sodium percarbonate crystal modifier and a preparation method thereof, belonging to the technical field of fine chemicals. Background technique

[0002] Sodium percarbonate (SPC for short), also known as sodium percarbonate, has a molecular formula of 2Na 2 CO 3 ·3H 2 o 2 , is a white, loose, fluid granule or powder solid, odorless, non-toxic, soluble in water. It is a new type of oxygen-based bleaching agent, which not only has the function of bleaching, but also has the functions of disinfection, sterilization, and degreasing. It is a fine chemical product with a wide range of uses and broad development prospects. Sodium percarbonate is usually prepared by the reaction of sodium carbonate and hydrogen peroxide. The preparation method is divided into dry process and wet process according to the state of sodium carbonate participating in the reaction, but the final product sodium percarbonate is mostly crystallized into p...