Synthesis of EDTA by the sodium cyanide method
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Water, liquid caustic, and ethylenediamine are added to the reaction vessel, while sodium cyanide and formaldehyde are added drop by drop. The reaction temperature is maintained at 100°C. During the reaction, there are competitive reactions between ammonia (produced during the hydrolysis process), formaldehyde, sodium cyanide, and formaldehyde. It is necessary to control these reactions in order to reduce the reactions involving ammonia and formaldehyde, thereby increasing the chances of reactions between formaldehyde and sodium cyanide and improving the yield of EDTA.
There are also rules to follow when copying text; at the very least, the font size should be made consistent. I guess you’re just a person with nothing in your head; even copying is done so poorly by you.