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Hydroxyphosphonoacetic Acid is white crystals with a phosphorus content of 19.8% and a melting point of 165-167.5 °c.
The pH value of 1% aqueous solution is 1, which can be miscible with water in any proportion.
Hydroxyphosphonoacetic Acid, HPAA, is a powerful mild steel corrosion inhibitor for all-organic cooling water formulations.
CAS Number: 23783-26-8
EC Number: 405-710-8
IUPAC Name: 2-hydroxy-2-phosphonoacetic acid
Chemical Formula: C2H5O6P
Other names: 23783-26-8, Acetic acid, 2-hydroxy-2-phosphono-, DTXSID40865115, EC 405-710-8, Belclene 575, RefChem:147249, Acetic acid, hydroxyphosphono, Acetic acid, 2hydroxy2phosphono, DTXCID10813562, 405-710-8, 607-269-9, 2-hydroxy-2-phosphonoacetic acid, Hydroxyphosphono-acetic acid, Acetic acid, hydroxyphosphono-, 2-hydroxy-2-phosphono-acetic acid, Hydroxyphosphonoacetic Acid - 50% in water, Hydroxy(phosphono)acetic acid, MFCD01940970, Phosphono-hydroxy-acetic acid, SCHEMBL254667, 2-hydroxy phosphono acetic acid, 2-hydroxy-2-phosphonoaceticacid, .alpha.-Hydroxyphosphonoacetic acid, MFCD20638215, .alpha.-Hydroxyl phosphonoacetic acid, AKOS015892863, FH28844, SY121936, CS-0158494, Hydroxyphosphono-acetic acid - 50% in water, NS00125792, E77112, 2-Hydroxy-2-phosphonoacetic acid, 50% in water, F695161
Hydroxyphosphonoacetic Acid reduces iron fouling which improves heat transfer efficiency.
Good biodegradability of Hydroxyphosphonoacetic Acid makes it 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.
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 Acid's corrosion inhibition ability is 5-8 times better than that of HEDP and EDTMP.
When built with low molecular polymers, Hydroxyphosphonoacetic Acid's corrosion inhibition effect is even better.
Hydroxyphosphonoacetic Acid is an organic phosphine scale and corrosion inhibitor with low phosphorus content.
Hydroxyphosphonoacetic Acid's molecule contains phosphonic acid group, carboxylic acid group and hydroxyl group.
Hydroxyphosphonoacetic Acid has excellent performance in scale and corrosion inhibition, especially in soft water and high hardness water.
In addition, Hydroxyphosphonoacetic Acid has the characteristics of low phosphorus, good thermal stability, low toxicity, etc.
Hydroxyphosphonoacetic Acid can achieve good compatibility and synergy with some common water stabilizers.
Hydroxyphosphonoacetic Acid can achieve better corrosion inhibition when used with zinc salt.
Hydroxyphosphonoacetic Acid, the English name is 2-Hydroxyphosphonoacetic Acid, is a chemical substance with the chemical formula C6H15O3P.
Hydroxyphosphonoacetic Acid has good chemical stability, hard to be hydrolyzed, and hard to be damaged by acid or alkali, safe and reliable to use, non-toxic and pollution-free.
Hydroxyphosphonoacetic Acid can improve the solubility of zinc, with strong inhibition, Hydroxyphosphonoacetic Acid has better inhibition performance than HEDP, EDTMP.
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 Acid's corrosion inhibition ability is 5-8 times better than that of HEDP and EDTMP.
When built with low molecular polymers, Hydroxyphosphonoacetic Acid's corrosion inhibition effect is even better.
USES and APPLICATIONS of HYDROXYPHOSPHONO ACETIC ACID:
Hydroxyphosphonoacetic Acid is widely used in steel, petrochemical, electric power, pharmaceutical and other industries of circulating cooling water system scale inhibition, corrosion inhibition, suitable for low hardness water quality in southern China.
Hydroxyphosphonoacetic Acid is used as corrosion inhibitor.
Hydroxyphosphonoacetic Acid can be widely used in steel, petrochemical, electric power, the scale inhibition and corrosion inhibition of circulating cooling water system in medicine and other industries are generally compounded with zinc salt to form corrosion inhibitor, which is suitable for low hardness water quality in Southern China and has scale inhibition effect.
Hydroxyphosphonoacetic Acid has excellent corrosion inhibition performance, especially for low hardness, low alkalinity, strong corrosive water, showing a strong corrosion inhibition.
Hydroxyphosphonoacetic Acid has a good chelating effect with divalent ions, which can be used as a metal ion stabilizer to effectively stabilize Fe2, Fe3, Mn2 and Al3 plasma in water and reduce corrosion and scaling.
Hydroxyphosphonoacetic Acid can significantly reduce the deposition of calcium carbonate and silicon dioxide, and has good scale inhibition performance, but the scale inhibition performance of Hydroxyphosphonoacetic Acid on calcium sulfate scale is slightly poor.
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.
In order to avoid the decomposition of Hydroxyphosphonoacetic Acid by the oxidizing bactericide, the protective agent can be used, but the residual chlorine (0.5~1-0 mg/L) is less affected in the intermittent chlorination cooling water system.
The combination of Hydroxyphosphonoacetic Acid and zinc salt has obvious synergistic corrosion inhibition effect.
The recommended concentration is generally 5 to 30mg/L.
Acid corrosion resistance shall be provided for each medicine.
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.
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.
Cooling water systems / industrial water treatment
Metal surface treatment as corrosion inhibitor for steel
Hydroxyphosphonoacetic Acid- 50% in water (cas# 23783-26-8) is used in preparation method of salt-resistant calcium-magnesium resistant polymer colloid system and Hydroxyphosphonoacetic Acid's application in oil reservoir oil displacement.
pH regulators and water treatment products.
Hydroxyphosphonoacetic Acid reduces iron fouling, thus improving heat transfer efficiency and reducing system maintenance costs.
Hydroxyphosphonoacetic Acid 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.
Hydroxyphosphonoacetic Acid 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 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 is mainly used as a cathodic corrosion inhibitor for metals.
Hydroxyphosphonoacetic Acid is widely used as a corrosion and scale inhibitor for recirculating cooling water systems in steel, petrochemical, power, and pharmaceutical industries.
Hydroxyphosphonoacetic Acid can also be combined with common organic phosphine, polymer and other monomers to form scale and corrosion inhibitors.
In combination with zinc salt, the performance of corrosion inhibition will be better.
The organic corrosion inhibitors of which Hydroxyphosphonoacetic Acid combines with low molecular weight polymer have excellent performance.
When built with zinc salt, the effect is even better.
Hydroxyphosphonoacetic Acid has good chemical stability, hard to be hydrolyzed, and hard to be damaged by acid or alkali, safe and reliable to use, non-toxic and pollution-free.
Hydroxyphosphonoacetic Acid is mainly used as the cathodic corrosion inhibitor for metals, but also widely used to realize corrosion inhibition and scale inhibition in circulating cooling water system of steel, petrochemical, electric power, pharmaceutical and other industries.
Hydroxyphosphonoacetic Acid is specially suitable for low hardness and easy-corrosive water quality.
Hydroxyphosphonoacetic Acid (HPA or HPAA) is used as antiscalant and corrosion inhibitor in cooling water systems.
Hydroxyphosphonoacetic Acid is widely used for scale and corrosion inhibition of circulating cooling water systems in steel, petrochemical, electric power, medicine and other industries, and is suitable for low-hardness water quality in southern country; Hydroxyphosphonoacetic Acid can be widely used in circulating cooling water systems in steel, petrochemical, electric power, medicine and other industries.
Scale and corrosion inhibition, generally compounded with zinc salt as a corrosion inhibitor, suitable for low-hardness water quality in southern country, and has the effect of scale inhibition.
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.
THE MAIN HYDROXYPHOSPHONO ACETIC ACID PRODUCTION ROUTE IS AS FOLLOWS:
Phosphorus acid solution reacts with glyoxylic at 100-110°C for 4-10hours.
And then input water to prepare Hydroxyphosphonoacetic Acid 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.
PHYSICAL and CHEMICAL PROPERTIES of HYDROXYPHOSPHONO ACETIC ACID:
Molecular Weight: 156.03
Appearance: Liquid
Color: Dark brown
Specific Gravity @ 25°C: 1.32-1.42
pH (1%) solution: < 2
Active Content Approx. 50%
Solubility: Miscible in water
Density: 2.1±0.1 g/cm3
Appearance: Dark brown liquid
Solid content (%): 48.0 - 52.0
pH (1% solution): 2.0 max.
Density (20 °C, g/cm3): 1.32 - 1.42
Boiling Point: 557.7±60.0 °C at 760 mmHg
Vapour Pressure: 0.0±3.4 mmHg at 25°C
Enthalpy of Vaporization: 96.5±6.0 kJ/mol
Flash Point: 291.1±32.9 °C
Index of Refraction: 1.579
Molar Refractivity: 24.3±0.3 cm3
#H bond acceptors: 6
#H bond donors: 4
#Freely Rotating Bonds: 2
Polar Surface Area: 125 Å2
Polarizability: 9.6±0.5 10-24cm3
Surface Tension: 143.0±3.0 dyne/cm
Molar Volume: 73.2±3.0 cm3
Boling Point: 299.7°C at 760 mmHg
Flash Point: 135°C
Vapor Presure: 0.000278mmHg at 25°C
Physical and Chemical Properties
Density 1.37 (50% aq.)
Appearance: Liquid
Odor: Slight
Color: Dark Brown
pH: 2.5 max (1% solution)
Melting Point: -12 ᵒC
Freezing Point: -5 °C
Boiling Range: 101 - 103 °C @ 760 mm hg
Thermal Decomposition : >160
Specific Gravity: 1.30 - 1.50 @ 20ᵒC
Solubility: Soluble
Partition Coefficient
n-octanol/water : <0
Viscosity : max 75 cps @ 25° C
Molecular Weight:156.03
XLogP3-AA: -2
Hydrogen Bond Donor Count: 3
Hydrogen Bond Acceptor Count: 6
Rotatable Bond Count: 3
Exact Mass: 155.98237487
Monoisotopic Mass: 155.98237487
Topological Polar Surface Area: 104 Ų
Heavy Atom Count: 9
Complexity: 151
FIRST AID MEASURES of HYDROXYPHOSPHONO ACETIC ACID:
-Eyes :
Remove any contact lenses.
Get medical aid/attention immediately.
-Skin :
Remove contaminated clothing.
Wash skin with plenty of running water and soap.
-Ingestion :
Give large amount of water to drink.
-Inhalation :
Keep warm and at rest.
Get medical attention/consult a physician.
-Note to Physician :
Treat symptomatically.
ACCIDENTAL RELEASE MEASURES of HYDROXYPHOSPHONO ACETIC ACID:
-Protective Gear for Personnel:
--For Small Spill :
Wear safety glasses.
-Spill Clean-up Procedures:
--For Small Spill :
Do not let chemical/waste enter the environment.
--For Large Spill :
Do not let chemical/waste enter the environment.
-Environmental Precaution :
*Water spill: use appropriate containment to avoid run off or release to sewer or other waterways.
*Land spill: use appropriate containment to avoid run off or release to ground.
EXPOSURE CONTROLS/PERSONAL PROTECTION of HYDROXYPHOSPHONO ACETIC ACID:
-Personal Protective
--Equipment:
*Eyes and face:
Wear safety glasses.
HANDLING and STORAGE of HYDROXYPHOSPHONO ACETIC ACID:
-Handling :
Wash hands thoroughly with soap and water after use.
-Storage :
Store in a cool, dry well-ventilated area.
Keep containers closed when not in use.
Do not store in Carbon Steel containers.
STABILITY and REACTIVITY of HYDROXYPHOSPHONO ACETIC ACID:
-Stability :
The product is stable under recommended storage and handling conditions.
-Hazardous Polymerization :
Polymerization will not occur.
