HEDP (1-hydroxyethyl-1,1-diic acid) and EDTMPA (ethyleine tetharine) are two commonly used chelated agents, which are widely used in scaling and scale resistant agents. Although they all have good chelating performance, in different application scenarios, their effects may be different:
HEDP: HEDP is an organic acid dirt -resistant agent, which is characterized by its strong chelating ability for calcium, magnesium, and other metal ions, and is still effective under hard water and high temperature conditions. Therefore, HEDP is usually better in preventing stains in heating, boiler, cooling water and other systems. In addition, HEDP also has a certain inhibitory effect on accumulation of carbonate dirt, iron hydroxide.
EDTA: EDTA is a multifunctional chelating agent, which is mainly used for chelating of calcium and magnesium. It can form a stable complex with metal ions to prevent the formation of stain accumulation. EDTA is widely used in the fields of cleaner, detergent, water treatment agent and other fields. In addition, EDTA can also be used to chelate heavy metal ions to help the metal ions in water treatment removing and stabilizing.
You need to choose HEDP or EDTA according to the specific application scenarios and types of stains. In some cases, the two can also be combined to achieve better dirt. It is worth noting that the correct dosage, method and maintenance measures are equally important for the effectiveness and effect of chelating agents. It is recommended to follow the suggestions of the manufacturer and conduct appropriate experiments and monitoring to determine the stool resistant and methods that are most suitable for your specific needs.