26099-09-2

Basic information

• Product Name: Polymaleic acid
• Synonyms: 2-Butenedioicacid(Z)-,homopolymer;poly(maleicacid)(50%aq);POLY(MALEIC ACID);(z)-2-butenedioic acid homopolymer;MALEIC ACID POLYMER;hydrolyzed polymaleic anhydride;Hydrolysed Polymaleic Anhydride;PolymaleicacidAq
• CAS NO: 26099-09-2
• Molecular Formula: (C4H404)n
• Molecular Weight: 116.07
• EINECS: 248-666-3
• Product Categories: Polymers;Water treatment
• Mol File: 26099-09-2.mol
• Article Data: 226

Chemical Properties

• Flash Point: 95 °C
• Appearance: orange transparent liquid
• Density: 1.18 (48% aq.)
• Storage Temp.: 2-8°C
• CAS DataBase Reference: Polymaleic acid(CAS DataBase Reference)
• NIST Chemistry Reference: Polymaleic acid(26099-09-2)
• EPA Substance Registry System: Polymaleic acid(26099-09-2)

Safety Data

• Hazard Codes: C,Xi
• Statements: 36-43-36/37/38
• Safety Statements: 24/25-28-36/37/39-36/37-26
• RIDADR: UN 3265
• Hazardous Substances Data: 26099-09-2(Hazardous Substances Data)

Usage

Description

Polymaleic acid is the homopolymer of maleic acid, a stable compound with excellent scale inhibition, high temperature resistance, and resistance to chlorine and other oxidizing biocides. It is synthesized through the polymerization of maleic anhydride in an aromatic hydrocarbon at temperatures ranging from 60° to 200° C.

Uses

Used in Water Desalination Plants:
Polymaleic acid is used as a scale inhibitor and high temperature resistant agent in water desalination plants, ensuring efficient operation and preventing scale buildup.
Used in Cooling Water Systems:
In high alkaline cooling water systems, polymaleic acid serves as an effective calcium carbonate antiscalant, preventing scale formation and maintaining optimal system performance.
Used in Corrosion Inhibition:
Polymaleic acid is used in combination with zinc salts as a corrosion inhibitor, protecting metal surfaces from corrosion and extending the lifespan of equipment.
Used as a Concrete Additive:
Polymaleic acid is utilized as a concrete additive, enhancing the properties of the concrete and improving its performance in various applications.
Used in Crude Oil Evaporation:
Polymaleic acid is employed in the process of crude oil evaporation, aiding in the efficient separation of oil components and improving the overall refining process.
Used as a Food Additive:
Polymaleic acid is also used as a food additive, contributing to the stability, texture, and other properties of various food products.

References

http://gg2.firstguo.com/patents/US4818795 http://www.connectchemicals.com/en/products-finder/poly-maleic-acid-26099-09-2-265/

Safety Profile

When heated to decomposition it emits acrid smoke and irritating fumes.

Upstream product

• 96-48-0 4-butanolide 
• 98-01-1 furfural 
• 98-00-0 (2-furyl)methyl alcohol 
• 108-31-6 maleic anhydride 
• 3724-65-0 2-butenoic acid 
• 88-14-2 2-furanoic acid 
• 861548-75-6 1-hexyl-2-methyl-pyrrole 
• 1066-30-4 chromium(lll) acetate 
• 20293-41-8 2,5-dimethyl-1-pentyl-1H-pyrrole 
• 124-04-9 Adipic acid 
• 513-35-9 2-methyl-but-2-ene 
• 107-01-7 butene-2 
• 617-48-1 malic acid 
• 97-67-6 (S)-Malic acid 

Downstream Products

• 51112-81-3 endo, cis-7-oxabicyclo<2.2.1>hept-5-ene-2,3-dicarboxylic acid 
• 28871-62-7 7-Oxa-bicyclo-<2.2.1>-hept-5-en-2,3-exo,exo-dicarbonsaeure 
• 6280-78-0 (+/-)-6t-Brom-5c-hydroxy-7-oxa-(1rH.4cH)-bicyclo<2.2.1>heptan-2c.3c-dicarbonsaeure-3-lacton 
• 6280-79-1 (+/-)-5endo,6exo-dibromo-7-oxa-norbornane-2exo,3exo-dicarboxylic acid 
• 20595-46-4 (Z)-3-(2,4-dichlorophenyl)acrylic acid 
• 19222-39-0 (4,4-dimethyl-2,6-dioxo-cyclohexyl)-succinic acid 
• 33176-41-9 (2-amino-4-oxo-4,5-dihydro-thiazol-5-yl)-acetic acid 
• 7153-53-9 6-oxo-2-thioxo-hexahydro-pyrimidine-4-carboxylic acid 
• 10154-76-4 3-(toluene-4-sulfonyl)propionic acid 
• 20595-48-6 2,5-dichloro-cis-cinnamic acid 
• 16091-33-1 diisoamyl maleate 
• 1115-52-2 2-(((R)-2-((S)-4-amino-4-carboxybutanamido)-3-((carboxymethyl)amino)-3-oxopropyl)thio)succinic acid 
• 6330-72-9 maleic acid bis-(2-butoxy-ethyl ester) 
• 6332-90-7 acetylsulfanyl-succinic acid 

Relevant articles and documents

Liquid hydrogenation of maleic anhydride with Pd/C catalyst at low pressure and temperature in batch reactor

Succinic acid (SA) produced from hydrogenation of maleic anhydride (MAN) is used widely in manufacturing of pharmaceuticals, agrochemicals, surfactants and detergent, green solvent and biodegradable plastic. In this study, we performed that liquid hydrogenation of MAN to SA with 5 wt% Pd supported on activated carbon (Pd/C) at low pressure and temperature. The synthesis of SA was performed in aqueous solution while varying temperature, pressure, catalytic amount and agitation speed. We confirmed that the composition of the products consisting of SA, maleic acid (MA), fumaric acid (FA) and malic acid (MLA) depends on the process. The catalytic characteristics were analyzed by TGA, TEM.

Catalyst for catalytic oxidation of furfural to prepare maleic acid and application thereof

A catalyst for catalytic oxidation of furfural to prepare maleic acid, relating to the technical field of renewable energy. The catalyst is a mixture of a bromide and a base. A method for preparing the catalyst in catalytic oxidation of furfural to prepare maleic acid. The method includes: mixing the furfural, the bromide-base, an oxidant and a solvent to carry out a reaction to obtain the maleic acid. The present invention has the advantages that the method has a relatively high conversion rate of furfural and a relatively high yield of maleic acid, the conversion rate of furfural is up to 99%, the yield of maleic acid is up to 68.04%; and the catalyst has a high catalytic selectivity and reusability.

Direct catalytic benzene hydroxylation under mild reaction conditions by using a monocationic μ-nitrido-bridged iron phthalocyanine dimer with 16 peripheral methyl groups

Direct catalytic hydroxylation of benzene under mild reaction conditions proceeded efficiently in the presence of a monocationic μ-nitrido-bridged iron phthalocyanine dimer with 16 peripheral methyl groups in an acetonitrile solution with excess H2O2. Mechanistic studies suggested that the reaction was catalyzed by a high-valent iron-oxo species generated in situ. Moreover, the peripheral methyl groups of the catalyst were presumed to have enhanced the production rate of the iron-oxo species.