Amino Trimethylene Phosphonic Acid CAS 6419-19-8 ATMP

ATMP has good chelating, low-limit inhibition and lattice distortion effects. Someone once tested that adding 1mg/L ATMP to water with a calcium hardness of 95mg/L can keep it stable for 24 hours at a temperature of 85 degrees. precipitation. According to the comparison of test data, ATMP is one of the best antiscaling agents for calcium carbonate in the methylene phosphonic acid type, so ATMP is especially used for inhibiting calcium carbonate scale. The concentration of ATMP as antiscalant alone is less than 10mg/l, the concentration of ATMP as corrosion inhibitor alone is more than 100mg/l; the concentration of ATMP and low molecular weight antiscalant is less than 5mg/l. Dosing mass concentration (active component) is generally 1-20mg/l. If it exceeds the above range, it will cause the formation of scale within a certain value. Usually in industrial use, in order to better exert its anti-scaling effect, it often works together with polycarboxylic acid.

ATMP is also used in thermal power plants, circulating cooling water in oil refining plants, and oil field reinjection water systems. Because ATMP has a corrosive effect on copper and its alloys, when using ATMP scale inhibitors, attention should be paid to the material of the circulation system, and azoles should be added Copper corrosion inhibitor can also be compounded with conventional chelating agents such as EDTA or NTA to achieve a synergistic and economical effect. ATMP can also compound with zinc salt, which can obviously improve the corrosion resistance of carbon steel. The optimal content of zinc in the formula is 30%-60%. Since zinc forms a complex with it, the solubilization and stability of zinc are added, so adding zinc The antiscalant of salt is not sensitive to the change of water quality, and the effect is more ideal.

In industrial use, due to certain specific environments, acidic substances are not allowed to be added. Usually ATMP is neutralized with sodium hydroxide to prepare ATMP sodium salt to achieve the purpose of scale and corrosion inhibition.