2-Hydroxyphosphonocarboxylic Acid (HPAA)

HPAA professional and technical network.

HPAA introduction

Polycarboxylic antiscale and dispersant...

HPAA is chemically stable, hard to be hydrolyzed, hard to be destroyed by acid or alkali, safety in use, no toxicity, no pollution. HPAA can improve zinc solubility. Its corrosion inhibition ability is 5-8 times better than that of HEDP and EDTMP. When built with low molecular polymers, its corrosion inhibition effect is even better.

HPAA Specification:

items	index
Appearance	Dark umber transparent viscous liquid
Solid content %	47.0-50.0
Phosphorous acid（as PO33-）%	4.0 max
Density (20℃)g/cm³	1.30 min
pH(1% solution)	1.0-3.0

HPAA related content

2-Hydroxyphosphonocarboxylic Acid (HPAA)
Polyhydric alcohol phosphate ester (PAPE)
2-Phosphonobutane -1,2,4-Tricarboxylic Acid (PBTCA)
HexaMethyleneDiamineTetra (MethylenePhosphonic Acid) HMDTMPA

And the relevant papers HPAA

Construction of Helicobacter pylori HPAA nucleic acid vaccine and detection of its immunogenicity
Construction and identification of eukaryotic expression plasmid of HPAA of H.pylori
Cloning, expression and identification of HPAA gene from a clinical isolate of Helicobacter pylori
Application of HPAA Protein in Diagnosis of Helicobacter pylori Infection
Construction and identification of a recombinant attenuated Salmonella typhimurium vaccine strain expressing Helicobacter pylori HPAA gene
Construction of a recombinant attenuated Salmonella typhimurium DNA vaccine carrying Helicobacter pylori HPAA
RESTRICTION FRAGMENT LENGTH POLYMORPHISM (RFLP) OF ADHESIN GENE HPAA FROM DIFFERENT HELICOBACTER PYLORI STRAINS
Immunoprotection of mice against Helicobacter pylori infection by oral immunization with attenuated Salmonella typhimurium expressing HPAA gene of Helicobacter pylori
Construction of HPAA gene from a clinical isolate of Helicobacter pyloriand identification of fusion protein