●(1)Molecular Weight ＆ Chemical Structure: 156 (OH)2 P - C H-COOH ‖ | O O H ●(2)Properties: ①HPAA could be dissolved and separated in two forms of [HPAA]2-和[HPAA]3- in water of PH 7-9. It could collate with Ca2+、Zn2+ to form a protection membrane of 1:1 chelate complex in the surface of metals. It is usually complexed with Zn2+ to act as corrosion inbibitor. Also,it is a very good scale inhibitor. ②The COD value is 0.34gO2／g. When the cooling water contains dissociative chlorine, it will be oxided; When confronted with oxidant, it will dissolve quickly.Its thermal stability could indicate 160℃ with PSC. ●(3) Specification: Appearance Dark brown liquid Solid content ≥50% Phosphorous (as PO3) ≤3.0% Density(20℃ g/cm3) 1.35—1.42 pH(1% water solution) 1.0~2.5 After detected with 31P—NMP。It is concluded that this NC-208 has the content of more than 85％. It is in accordance with Belcor 575 of Ciba-Geigy Company.
HPAA could be widely used as scale inhibitor and corrosion inhibitor in cooling water circulation system for steel & iron, petro-chemitry, power and medical industry. It is usually scale inhibitor when complexed with zinc salt.It is a scale inhibitor spec

CAS NO:23783-26-8;4721-24-8

EC NO:

Molecular Formula:C₆H₁₃O₃P

Molecular Weight:164.1405

Synonyms:;Hydroxyphosphono-acetic acid;N-HEXYLPHOSPHONIC ACID;LABOTEST-BB LT00408920;hpaa;n-Hexylphosphonicacid;2-Hydroxyphosphonocarboxylic Acid;2-Hydroxy Phosphonoacetic Acid;2-Hydroxy Phosphonic Acetic AcidStructure;hexylphosphonic acid;hexylphosphonate;

Molecular Structure: