maleic acid

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ma·le·ic acid

A colorless crystalline acid, the cis-isomer of C4H4O4, used in textile processing and as an oil and fat preservative.

[From French acide maléique, alteration of acide malique, malic acid; see malic acid.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

maleic acid

(Elements & Compounds) a colourless soluble crystalline substance used to synthesize other compounds. Formula: HOOCCH:CHCOOH. Systematic name: cis-butanedioic acid
[C19: from French maléique, altered form of malique; see malic acid]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

ma•le′ic ac′id

(məˈli ɪk)
a colorless, crystalline, water-soluble solid, C4H4O4, used to make synthetic resins and to dye textiles.
[1870–75; < French maléique, alter. of malique malic]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.maleic acid - a colorless crystalline compound found in unripe fruit (such as apples or tomatoes or cherries) and used mainly to make polyester resinsmaleic acid - a colorless crystalline compound found in unripe fruit (such as apples or tomatoes or cherries) and used mainly to make polyester resins
acid - any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt
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References in periodicals archive ?
The others segment includes palmitic acids, stearic acids, and maleic acid, which hold less than one-fourth of the global market share.
salicylic acid, nicotinamide (NIC), glutaric acid, malonic acid, benzoic acid, tartaric acid, oxalic acid, citric acid, urea, succinic acid, saccharine sodium, Pluronic 68 AR, magnesium stearate, crotonic acid, P-hydroxy benzoic acid, caffeine, 3,5 dihydroxy benzoic acid, piperazine citrate, cinnamic acid, adipic acid, hydroquinone, isonicotinic acid, acetamide, maleic acid, and ascorbic acid.
The polymer is esterified on one of the maleic acid portion of the polymer resulting in a half-ester anionic polymer.
After maintaining the temperature below 10 AdegC, maleic acid (12.5 g) was added.
'Food safety crises among them, milk found tainted with melamine in China, the use of maleic acid in producing bubble tea, baby formula manufactured in New Zealand contaminated with clostridium botulinum, have sparked global concern,' he said at a ceremony to hand over the letter of award for the NCFS project here today.
Modern orthodontic bonding has evolved through different phases.5 The conventional primers consist of bis-phenol A glycidal methacrylate (Bisgma) resins, which are hydrophobic in nature,6 while moisture insensitive primers consists of hydrophilic components, such as hydroxyethyl methacrylate (HEMA) and maleic acid dissolved in acetone,7,8 that works efficiently even in moist conditions.
Key metabolites: 1, leucine; 2, valine; 3, threonine; 4, alanine; 5, lysine; 6, acetic acid; 7, proline; 8, 4-hydroxyisoleucine; 9, succinic acid; 10, malic acid; 11, asparagine; 12, choline; 13, phosphorylcholine; 14, betaine; 15, sucrose; 16, [beta]-glucose; 17, vasicine; 18, [alpha]-glucose; 19, maleic acid; 20, harmine; 21, harmaline; 22, vasicinone; 23, formic acid.
The advantages of using dicarboxylic acid for the preparation of NCs are that (1) carboxyl groups are introduced on the surface of CNCs and CNFs, as ester group could have been formed by the reaction of dicarboxylic acids with cellulose [92]; (2) solid dicarboxylic acid (e.g., oxalate and maleic acid) is of low corrosion to equipment and could be fully recovered by using crystallization technology; (3) the resultant CNCs and CNFs are thermally stable which is beneficial for the manufacture of composite.
The study considered the negative equilibrium constants (pK) of various reactions including chelation of cations by maleic acid and itaconic acid versus the P-precipitation reactions between P and the cations in soils.
They are based on either maleic acid esters of tall oil rosins or, much less frequently, gum rosins or hydrocarbon resins.