PRODUCTS

HYDROLYZED POLYMALEIC ANHYDRIDE (HPMA)

CAS NUMBER: 26099-09-2

EC NUMBER: 203-742-5

MOLECULAR FORMULA: C4H2O3

MOLECULAR WEIGHT: 98.06

IUPAC NAME: (Z)-but-2-enedioic acid

Hydrolyzed Polymaleic Anhydride (HPMA) has been developed as a calcium carbonate inhibitor in industrial water systems and other related applications.
Hydrolyzed Polymaleic Anhydride (HPMA) is the most effective calcium carbonate antiscalant for high hardness, high alkalinity, and high temperature cooling water systems, in the industry.

Hydrolyzed Polymaleic Anhydride (HPMA) is suitable for Scale control in sugar evaporators
Hydrolyzed Polymaleic Anhydride (HPMA) is compatible with all organic cooling water programs

Hydrolyzed Polymaleic Anhydride (HPMA) has excellent calcium carbonate crystal dictortion results in non-adherent crystals.
Hydrolyzed Polymaleic Anhydride (HPMA) maintains clean heat exchangers even in high calcium waters.
Hydrolyzed Polymaleic Anhydride (HPMA) can be used as a stand-alone calcium carbonate inhibitor or as a multifunctional formulation support agent in cooling water formulations and other related applications.

Hydrolyzed Polymaleic Anhydride (HPMA) is a colorless crystalline solid having a faint odor.
Hydrolyzed Polymaleic Anhydride (HPMA) is combustible though it may take some effort to ignite.

Hydrolyzed Polymaleic Anhydride (HPMA) is soluble in water.
Hydrolyzed Polymaleic Anhydride (HPMA) is used to make other chemicals and for dyeing and finishing naturally occurring fibers.

Hydrolyzed Polymaleic Anhydride (HPMA) is an organic salt or ester of maleic acid that could be conjugated to free base compounds/drugs to improve the physiochemical properties including stability, solubility and dissolution rate.
Hydrolyzed Polymaleic Anhydride (HPMA) is a butenedioic acid in which the double bond has cis- (Z)-configuration.

Hydrolyzed Polymaleic Anhydride (HPMA) has a role as a plant metabolite, an algal metabolite and a mouse metabolite.
Hydrolyzed Polymaleic Anhydride (HPMA) is a conjugate acid of a maleate(1-) and a maleate.

Hydrolyzed Polymaleic Anhydride (HPMA) is a phosphorus-free water treatment chemical.
Hydrolyzed Polymaleic Anhydride (HPMA) forms a chelate with calcium and magnesium ions in water.
Hydrolyzed Polymaleic Anhydride (HPMA) can cause lattice distortion.

After the anion is adsorbed by the calcium carbonate nucleus, the nucleus can be charged.
Hydrolyzed Polymaleic Anhydride (HPMA) is compatible with other low-phosphorus corrosion and scale inhibitors such as ATMP and PBTC.
The formed composite corrosion and scale inhibitor can be widely used in the treatment of circulating cooling water, boiler water, oil field water injection, industrial water.

Hydrolyzed Polymaleic Anhydride (HPMA) Structural Analysis:
Hydrolyzed polymaleic anhydride (HPMA) is the product of partial hydrolysis of polymaleic anhydride.
Hydrolyzed Polymaleic Anhydride (HPMA) has been determined that about 60% to 70% of the polymaleic anhydride is hydrolyzed to a carboxylic acid.
That is not completely hydrolyzed.

Hydrolyzed Polymaleic Anhydride (HPMA) is shown by the study of the structure-effect relationship of molecular microstructure.
The increase in the degree of hydrolysis is advantageous for HPMA chemical improvement in scale inhibition performance.
Therefore, a large degree of hydrolysis is ensured as much as possible during the synthesis of hydrolyzed polymaleic anhydride.

From hydrolyzed polymaleic anhydride structural analysis, its carboxyl group in the molecule can form compounds with calcium and magnesium ions in water.
And Hydrolyzed Polymaleic Anhydride (HPMA) can promote lattice distortion and turn the precipitation into a loose slag with good fluidity.

Hydrolyzed Polymaleic Anhydride (HPMA) is the same as a polymer having a hydroxyl group or a sulfonic acid group.
Hydrolyzed Polymaleic Anhydride (HPMA) can be dissociated into hydrogen ions and acid anions after being dissolved in water.
The chain molecules are then negatively charged.

This long-chain negatively charged anion is adsorbed by calcium carbonate nucleus and fine crystal grains.
Then bring HPMA with a more negative charge.

Hydrolyzed Polymaleic Anhydride Characteristics:
Hydrolyzed Polymaleic Anhydride (HPMA) chemical is a class of polycarboxylic acid scale inhibitors.
Hydrolyzed Polymaleic Anhydride (HPMA) can be matched with other corrosion and scale inhibitors.

The molecular weight of Hydrolyzed Polymaleic Anhydride (HPMA) is about 600~1200.
The aqueous solution is brownish yellow or brownish red, viscous, acidic liquid.

Hydrolyzed Polymaleic Anhydride (HPMA) is chemically stable.
Hydrolyzed Polymaleic Anhydride (HPMA) can be used at temperatures below 350 °C.

Hydrolyzed Polymaleic Anhydride (HPMA) has excellent scale inhibition performance for carbonate and phosphate.
Hydrolyzed Polymaleic Anhydride (HPMA) has significant solubility effects and significant dispersion effects.
Hydrolyzed Polymaleic Anhydride (HPMA) can be adapted to water quality at different pH values.

Hydrolyzed Polymaleic Anhydride (HPMA) chemical is phosphorus-free, non-toxic and environmentally friendly.
Hydrolyzed Polymaleic Anhydride (HPMA) can be degraded by microorganisms in the natural environment.
The degradation products have no effect on the ecological environment.

Hydrolyzed Polymaleic Anhydride (HPMA) Scale Inhibition Performance:
The Hydrolyzed Polymaleic Anhydride (HPMA) has the following scale inhibition characteristics.

*Hydrolyzed Polymaleic Anhydride (HPMA) is quite effective for calcium carbonate scale.
At the same time, Hydrolyzed Polymaleic Anhydride (HPMA) has both lattice distortion and threshold effect (ie, unidirectional conductivity).
Even if it is scaled, it is relatively loose.
Hydrolyzed Polymaleic Anhydride (HPMA) is easily washed away by water and not formed into a hard scale.

*Hydrolyzed Polymaleic Anhydride (HPMA) has high-temperature resistance.
Decomposition usually occurs above 350 °C.
Hydrolyzed Polymaleic Anhydride (HPMA) can be used at high temperatures.

*Hydrolyzed Polymaleic Anhydride (HPMA) has a certain ability to disperse calcium carbonate, calcium phosphate, calcium sulfate and the like.

*Hydrolyzed Polymaleic Anhydride (HPMA) can be compounded with a zinc salt.
There is a synergistic effect on corrosion inhibition of carbon steel.

*Hydrolyzed Polymaleic Anhydride (HPMA) is non-toxic.
No significant impact on the environment.

Applications:
Hydrolyzed Polymaleic Anhydride (HPMA) provides the formulator:
- Superior calcium carbonate scale inhibition in severe service conditions, where the LSI approaches 3.0
- Both threshold inhibition and crystal modification
- Better results for phosphonate based programs than when phosphonates used alone
- Easy on-site testing using Bel-Trak test kit

Benefits:
Hydrolyzed Polymaleic Anhydride (HPMA) is suitable for Scale control in sugar evaporators
Hydrolyzed Polymaleic Anhydride (HPMA) is compatible with all organic cooling water programs

Properties:
Hydrolyzed Polymaleic Anhydride (HPMA) is a solvent-based poly-maleic acid, with obvious threshold inhibition and crystal modification, and average molecular weight around 1000.
Hydrolyzed Polymaleic Anhydride (HPMA) is the superior calcium carbonate inhibitor in high hardness, high alkalinity, and high temperature severe water conditions and a multifunctional formulation support agent in industrial water systems and other related applications.

Hydrolyzed Polymaleic Anhydride (HPMA) is widely used in desalination plant of flash vaporization equipment, low pressure boiler, steam locomotive, crude oil evaporation, petroleum pipeline, and industrial circulating cooling water systems.
Hydrolyzed Polymaleic Anhydride (HPMA) has better performance when combined with phosphonates than when phosphonates used alone.

Hydrolyzed Polymaleic Anhydride (HPMA) is compatible with organic phosphonic and quaternary ammonium compounds, while not affected by chlorine or other oxidizing biocides under normal use conditions.
Hydrolyzed Polymaleic Anhydride (HPMA) has no toxicity

Hydrolyzed Polymaleic Anhydride (HPMA) is soluble in water
Hydrolyzed Polymaleic Anhydride (HPMA) has high chemical and thermal stability

Hydrolyzed Polymaleic Anhydride's decomposed temperature above 330℃.
Hydrolyzed Polymaleic Anhydride (HPMA) has obvious threshold effect under high temperature (350℃) and high pH（8.3）level

Hydrolyzed Polymaleic Anhydride (HPMA) is suitable to be used in alkaline water system or built with agents.
Hydrolyzed Polymaleic Anhydride (HPMA) has good scale inhibition against carbonate and phosphate scales under temperature 300℃ with effective time as long as 100 hours.

Due to its good scale inhibition and high temperature tolerance properties, HPMA is widely used in:
-desalination plant of flash vaporization equipment,
-low pressure boiler,
-steam locomotive,
-crude oil evaporation,
-petroleum pipeline,
-industrial circulating cool water systems

In addition, Hydrolyzed Polymaleic Anhydride (HPMA) has good corrosion inhibition effect when used together with zinc salt.
Hydrolyzed Polymaleic Anhydride (HPMA) can also used as additives for cement.

Chemical reactivity/compatibility:
Hydrolyzed Polymaleic Anhydride (HPMA)is not affected by chlorine or other oxidising biocides under normal use conditions.
Test for compatibility with long chain nitrogen compounds, aliphaticamine and quaternary ammonium compounds

PHYSICAL PROPERTIES:

-Molecular Weight: 116.07

-XLogP3: -0.3

-Exact Mass: 116.01095860

-Monoisotopic Mass: 116.01095860

-Topological Polar Surface Area: 74.6 Å²

-Physical Description: Colorless or white solid

-Color: Colorless

-Form: crystals

-Odor: Faint acidulous odor

-Taste: Characteristic repulsive, astringent taste

-Boiling Point: 275 °F

-Melting Point: 130.5 °C

-Flash Point: 127 °C

-Density: 1.590 g/cu cm

-Vapor Density: 4.0

-Vapor Pressure: 0.0000359

Hydrolyzed Polymaleic Anhydride (HPMA) is compatible with all organic cooling water programs
Hydrolyzed Polymaleic Anhydride (HPMA) has excellent calcium carbonate crystal dictortion results in non-adherent crystals.

Hydrolyzed Polymaleic Anhydride (HPMA) maintains clean heat exchangers even in high calcium waters.
Hydrolyzed Polymaleic Anhydride (HPMA) can be used as a stand-alone calcium carbonate inhibitor or as a multifunctional formulation support agent in cooling water formulations and other related applications.
Hydrolyzed Polymaleic Anhydride (HPMA) is a colorless crystalline solid having a faint odor.

CHEMICAL PROPERTIES:

-Hydrogen Bond Donor Count: 2

-Hydrogen Bond Acceptor Count: 4

-Rotatable Bond Count: 2

-Heavy Atom Count: 8

-Formal Charge: 0

-Complexity: 119

-Isotope Atom Count: 0

-Defined Atom Stereocenter Count: 0

-Undefined Atom Stereocenter Count: 0

-Defined Bond Stereocenter Count: 1

-Undefined Bond Stereocenter Count: 0

-Covalently-Bonded Unit Count: 1

-Compound Is Canonicalized: Yes

Hydrolyzed Polymaleic Anhydride (HPMA) is combustible though it may take some effort to ignite.
Hydrolyzed Polymaleic Anhydride (HPMA) is soluble in water.
Hydrolyzed Polymaleic Anhydride (HPMA) is used to make other chemicals and for dyeing and finishing naturally occurring fibers.

Hydrolyzed Polymaleic Anhydride is an organic salt or ester of maleic acid that could be conjugated to free base compounds/drugs to improve the physiochemical properties including stability, solubility and dissolution rate.
Hydrolyzed Polymaleic Anhydride is a butenedioic acid in which the double bond has cis- (Z)-configuration.

Hydrolyzed Polymaleic Anhydride (HPMA) forms a chelate with calcium and magnesium ions in water.
Hydrolyzed Polymaleic Anhydride (HPMA) can cause lattice distortion.

Hydrolyzed Polymaleic Anhydride (HPMA) is shown by the study of the structure-effect relationship of molecular microstructure.
Hydrolyzed Polymaleic Anhydride (HPMA) can be dissociated into hydrogen ions and acid anions after being dissolved in water.
Hydrolyzed Polymaleic Anhydride (HPMA) chemical is a class of polycarboxylic acid scale inhibitors.

The molecular weight of Hydrolyzed Polymaleic Anhydride (HPMA) is about 600~1200.
The aqueous solution is brownish yellow or brownish red, viscous, acidic liquid.

Hydrolyzed Polymaleic Anhydride (HPMA) is chemically stable.
Hydrolyzed Polymaleic Anhydride (HPMA) can be used at temperatures below 350 °C.

The degradation products have no effect on the ecological environment.
Hydrolyzed Polymaleic Anhydride (HPMA) has high-temperature resistance.
Hydrolyzed Polymaleic Anhydride (HPMA) can be used at high temperatures.

Hydrolyzed Polymaleic Anhydride (HPMA) can be compounded with a zinc salt.
Hydrolyzed Polymaleic Anhydride (HPMA) is non-toxic.

Hydrolyzed Polymaleic Anhydride (HPMA) is the superior calcium carbonate inhibitor in high hardness, high alkalinity, and high temperature severe water conditions and a multifunctional formulation support agent in industrial water systems and other related applications.
Hydrolyzed Polymaleic Anhydride (HPMA) is widely used in desalination plant of flash vaporization equipment, low pressure boiler, steam locomotive, crude oil evaporation, petroleum pipeline, and industrial circulating cooling water systems.

Hydrolyzed Polymaleic Anhydride (HPMA) has better performance when combined with phosphonates than when phosphonates used alone.
Hydrolyzed Polymaleic Anhydride (HPMA) is compatible with organic phosphonic and quaternary ammonium compounds, while not affected by chlorine or other oxidizing biocides under normal use conditions.

Hydrolyzed Polymaleic Anhydride (HPMA) has no toxicity
Hydrolyzed Polymaleic Anhydride (HPMA) is soluble in water
Hydrolyzed Polymaleic Anhydride (HPMA) has high chemical and thermal stability

Hydrolyzed Polymaleic Anhydride's decomposed temperature above 330℃.
Hydrolyzed Polymaleic Anhydride (HPMA) has obvious threshold effect under high temperature (350℃) and high pH（8.3）level

SYNONYMS:

HPMA
Hydrolyzed Polymaleic Anhydride
poly(maleicacid)
Polymaleic Acid
MALEIC ACID POLYMER
Polymaleic Acid
(2Z)-but-2-enedioic acid
2-Butenedioic acid (2Z)-
2-Butenedioic acid (Z)-
cis-1,2-Ethylenedicarboxylic acid
(Z)-Butenedioic acid
Kyselina maleinova
(Z)-2-Butenedioic acid
Butenedioic acid, (Z)-
2-Butenedioic acid, (Z)-
1,2-Ethylenedicarboxylic acid, (Z)
cis-2-Butenedioic acid
cis-but-2-enedioic acid
2-Butenedioic acid (2Z)-, monocastor oil alkyl esters
(2Z)-but-2-enedioate
(2Z)-2-Butenedioic acid
Cis-butenedioate
2-Butenedioate
(z)-butenedioate
cis-2-Butenedioate
bis-hydrogen maleate
cis-but-2-enedioate
Maleic acid (8CI)
Maleic anhydride, mono(castor oil) ester
(2Z)-2-Butenedioate
Butenedioic acid,(Z)-
(2Z)-Butene-2-dioate
(2Z)-Butene-2-dioic acid
4-02-00-02199 (Beilstein Handbook Reference)
2-butenedioic acid, (2Z)-
(2Z)-2-Butenedioic acid
1-(o-Tolyl)piperazinehydrochloride
1,2-Ethylenedicarboxylic acid, cis-
2-Butenedioic acid (2Z)- (9CI)