HYDROXYPHOSPHONOACETIC ACID
HYDROXYPHOSPHONOACETIC ACID
Hydroxyphosphonoacetic acid = 2-Hydroxy Phosphonoacetic Acid = HPAA
Molecular Formula: C2H5O6P
Molecular weight: 156
CAS No.: 23783-26-8
EC No.: 405-710-8
Sometimes HPAA can even replace molybdate and its derivatives.
The good efficiency at low concentration enables HPAA usually used at the PPM level.
Hydroxyphosphonoacetic acid is water-soluble and can increase Zn solubility.
Hydroxyphosphonoacetic acids effect can be further improved when built with Zn salts or polymer.
HPAA has superior performance than those commonly used phosphonates like HEDP and EDTMP (5-8 times better).
Hydroxyphosphonoacetic acid is chemically stable, hard to be hydrolyzed, hard to be destroyed by acid or alkali, safety in use, no toxicity, no pollution.
Hydroxyphosphonoacetic acid can improve zinc solubility.
Hydroxyphosphonoacetic acids corrosion inhibition ability is 5-8 times better than that of HEDP and EDTMP.
When built with low molecular polymers, Hydroxyphosphonoacetic acids corrosion inhibition effect is even better.
Hydroxyphosphonoacetic acid Properties:
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.
HPAAS corrosion inhibition ability is 5-8 times better than that of HEDP and EDTMP.
When built with low molecular polymers, Hydroxyphosphonoacetic acids corrosion inhibition effect is even better.
The main HPAA production route is as follows.
Phosphorus acid solution reacts with glyoxylic at 100-110°C for 4-10hours.
And then input water to prepare HPAA aqueous solution.
This reaction can be 1-step forward and starts from PCl3 hydrolysis.
Some research is studying to use microwave irradiation to replace the heating process for reducing energy consumption and reaction time.
Hydroxyphosphonoacetic acid Usages:
Hydroxyphosphonoacetic acid is mainly used as a cathode corrosion inhibitor in the oilfield refill water system in fields such as steel & iron, petrochemical, power plant, and medical industries.
When built with zinc salt, the effect is even better.
As a corrosion inhibitor, Hydroxyphosphonoacetic acid is mainly applied in the cooling water/industrial water system of oilfield, petrochemical plant and power plant.
Hydroxyphosphonoacetic acid is also used for metal surface treatment in steel.
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.
Hydroxyphosphonoacetic acids corrosion inhibition ability is 5-8 times better than that of HEDP and EDTMP.
When built with low molecular polymers, Hydroxyphosphonoacetic acids corrosion inhibition effect is even better.
Hydroxyphosphonoacetic acid Usages:
HPAA is mainly used as cathode corrosion inhibitor in oilfield refill water system in fields such as steel & iron, petrochemcal, power plant and medical industries.
When built with zinc salt, the effect is even better.
Hydroxyphosphonoacetic acid Usages:
Hydroxyphosphonoacetic acid is mainly used as cathode corrosion inhibitor in oilfield refill water system in fields such as steel & iron, petrochemcal, power plant and medical industries.
When built with zinc salt, the effect is even better.
HPAA is a powerful mild steel corrosion inhibitor for all-organic cooling water formulations.
HPAA reduces iron fouling which improves heat transfer efficiency.
Good biodegradability of HPAA makes Hydroxyphosphonoacetic acid suitable in areas where the molybdenum discharge rate is regulated at very low levels.
Hydroxyphosphonoacetic acid can be easily monitored by a standard organophosphonate test kit.
HPAA is an environmentally acceptable corrosion inhibitor for carbon steel in cooling water systems.
Hydroxyphosphonoacetic acid gives better corrosion protection for carbon steel when used in conjunction with zinc or other phosphonates.
HPAA reduces iron fouling, thus improving heat transfer efficiency and reducing system maintenance costs.
HPAA is biodegradable and especially suitable in applications where the molybdate discharge is regulated OR all organic cooling water treatment is desired.
Hydroxyphosphonoacetic acid is expected to be susceptible to halogen attack.
Hydroxyphosphonoacetic acid (HPAA) will be delivered as a 50% aqueous solution.
Hydroxyphosphonoacetic acid is considered being a mild steel corrosion inhibitor and is mainly used in the water treatment industry.
Hydroxyphosphonoacetic acid shows superior performance in all organic formulations compared to commonly used Phosphonates.
In certain formulations Hydroxyphosphonoacetic acid can replace Molybdate or its derivatives.
Hydroxyphosphonoacetic acid Appearance: Dark umber liquid
Solid content: % 50.0 min
Total phosphonic acid(as PO43-)%: 25.0 min
Phosphoric acid (as PO43- )%: 1.5 max
Density (20℃) g/cm3: 1.30 min
pH(1% water solution): 3.0 max
A coordination-induced film-forming method was developed to construct 2-hydroxyphosphonoacetic acid (HPAA)-Zn²⁺ complex conversion layer (HPAA-Zn²⁺ layer for short) on cold-rolled steel (CRS) substrate.
Moreover, the incorporation of Mo component into the HPAA-Zn²⁺ layer can significantly improve the uniformity and anticorrosion properties.
The results showed that Mo-incorporated HPAA-Zn²⁺ layer displayed the best anticorrosion performance when the molar ratio of HPAA/Zn²⁺ was 1:1, the film-forming time was 10 min, and the concentration of molybdate was 0.1 wt%.
In addition, energy dispersive spectroscopic (EDS) and X-ray photoelectron spectroscopic (XPS) results demonstrated that the Mo-incorporated HPAA-Zn²⁺ layer was mainly composed of ZnO and HPAA-Zn²⁺ complex and also confirmed that Mo-O-P bonds occurred between molybdate anion and HPAA molecule.
Synonyms:
HPAA;HPA;
Hydroxyphosphonoacetic acid;
Hydroxyphosphono-acetic acid;
2-HYDROXY PHOSPHONOACETIC ACID
The invention provides a method for preparing 2-hydroxyphosphonoacetic acid (HPAA).
The method comprises the following step of: reacting phosphorous acid and glyoxylic acid under microwave radiation, wherein the microwave power is 200-600W, and the reaction time is 30-60 minutes, so that an aqueous solution of HPAA is obtained.
The method is high in reaction yield up to over 95 percent generally, simple in process flow and low in cost, the reaction is easily controlled, three wastes are avoided, pollution is avoided, and the method is suitable for industrial production
CAS No.: 23783-26-8
Molecular Formula: C2H5O6P
The role of hydroxy phosphonoacetic acid (HPA) in the inhibition of mild steel corrosion in aqueous systems, has been elucidated by the use of a range of physicochemical techniques.
In particular, surface analytical studies have clarified the form and the structure of the protective layer.
Molecular Formula: C2H5O6P
Molecular weight: 156
Structural Formula:
HOPOOHCHOHCOOH
Formula
C2H5O6P
CAS No.: 23783-26-8
EC No.: 405-710-8
Synonyms: 2-Hydroxy-2-phosphono-acetic acid; 2-hydroxy-2-phosphonoacetic acid; 2-hydroxy-2-phosphono-ethanoic acid; Acetic acid, hydroxyphosphono-; alpha.-Hydroxyl phosphonoacetic acid; alpha.-Hydroxyphosphonoacetic acid
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.
HPAAs corrosion inhibition ability is 5-8 times better than that of HEDP and EDTMP.
When built with low molecular polymers, Hydroxyphosphonoacetic acids corrosion inhibition effect is even better.
Hydroxyphosphonoacetic acid
2-[hydroperoxy(hydroxy)phosphoryl]acetic acid
2-(Hydroperoxy(hydroxy)phosphoryl)acetic acid
hydroxyphosphono acetic acid
SCHEMBL560738
ZINC100443591
DB-029902
Hydroxyphosphono-acetic acid; 2-Hydroxy phosphono acetic acid; HPA; HPAA
Acetic acid, hydroxyphosphono-
2-hydroxy-2-phosphonoacetic acid
2-Hydroxyphosphonoacetic Acid
Acetic acid, 2-hydroxy-2-phosphono-
2-hydroxy-2-phosphono-acetic acid
Phosphono-hydroxy-acetic acid
SCHEMBL254667
Hydroxyphosphonoacetic acid
DTXSID40865115
.alpha.-Hydroxyphosphonoacetic acid
.alpha.-Hydroxyl phosphonoacetic acid
AKOS015892863
VZ34695
FT-0694552
EC 405-710-8
23783-26-8 [RN]
3604142 [Beilstein]
Acetic acid, 2-hydroxy-2-phosphono- [ACD/Index Name]
Acetic acid, hydroxyphosphono- [ACD/Index Name]
Acide hydroxy(phosphono)acétique [French] [ACD/IUPAC Name]
Hydroxy(phosphono)acetic acid [ACD/IUPAC Name]
Hydroxy(phosphono)essigsäure [German] [ACD/IUPAC Name]
Hydroxyphosphonoacetic acid
QVYQPQQO [WLN]
2-Hydroxy-2-phosphonoacetic acid [ACD/IUPAC Name]
2-Hydroxyphosphonoacetic acid
2-Phosphoglycolic acid
HPAA
MFCD20638215 [MDL number]
α-Hydroxyphosphonoacetic acid
hpaa | hpse1 | heparanase-1 | hpse | snailagglutinin | phosphonoglycolic acid | heparanase [precursor] | endo-glucoronidase | hpa | belcor 575
hydroxyphosphono-aceticaci
2-HYDROXY PHOSPHONOACETIC ACID
Acetic acid, hydroxyphosphono-
2-Hydroxy Phosphonoacetic Acid (HPA)
HYDROXYPHOSPHONEACETICACID
HPA
HPAA
Hydroxyphosphono-acetic acid
2-HYDROXY PHOSPHONOACETIC ACID (HPA 0.5
2-Phosphonoglycolic acid
Belcor 575
Carboxyhydroxymethylphosphonic acid
Phosphonoglycolic acid
Hydroxyphosphonoacetic acid (HPAA)
ANTI-HEPARANASE (N-TERM) antibody produced in rabbit
Endo-glucoronidase
Heparanase [Precursor]
2-Hydroxy Phosphonoacetic Acid(HPAA)
Snailagglutinin
Acetic acid, 2-hydroxy-2-phosphono-
Heparanase-1
HPSE
HPSE1
2-Hydroxy-2-phosphonoacetic acid
Hydroxyphosphono-acetic acid-50% in H2O
Chemical auxiliary agent HPAA and Corrosion inhibitor HPAA
Hydroxy(phosphonooxy)acetic acid
2-Hydrophosphonylacetic acid
Hydroxyphosphono-acetic acid fandachem
23783-26-8
28884-83-2
C2H5O6P
Water treatment
Phosphonate antiscalant
Industrial/Fine Chemicals