The mixture may be separated by dissolving out the ammonium euchroate with water. Mellitic acid may be prepared by warming mellite with ammonium carbonate, boiling off the excess of the ammonium salt, and adding ammonia to the solution. It is a very stable compound; chlorine, concentrated nitric acid and hydriodic acid do not react with it. Mellitic acid 99% Synonym: Benzenehexacarboxylic acid CAS Number 517-60-2. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. Synthesis and separation of mellitic acid and graphite oxide colloid through electrochemical oxidation of graphite in deionized water. formation of higher molecular weight structures, as observed for adenine, mellitic acid and tentatively glycine (derived CN x aromatic compound, mellitic anhydride heteropolymer, polypeptide respectively). Acid-base reaction, a type of chemical process in which one or more hydrogen ions are exchanged between species that may be neutral (molecules, such as water or acetic acid), or electrically charged (ions, such as ammonium, carbonate, or hydroxide). Mellitic acid may be prepared by warming mellite with ammonium carbonate, boiling off the excess of the ammonium salt, and adding ammonia to the solution. 10, pp. The acid may also be prepared by the oxidation of pure carbon, graphite or hexamethylbenzene, by alkaline potassium permanganate in the cold, or by hot concentrated nitric acid.[5]. Hexamethylbenzene can be oxidised to mellitic acid, which is found in nature as its aluminium salt in the rare mineral mellite. Earlier work has shown that the net charge in MA (−4, −3, or −2) influences its assembly, respectively, either as ribbons or sheets. Those reagents and precursors are relatively expensive, compared to the known method of preparation of mellitic acid, also known as graphitic acid or benzenehexacarboxylic acid, simply by the action of either alkaline KMnO4 or hot concentrated HNO3 on graphite, or of hot concentrated sulfuric acid on charcoal. Linear Formula C 6 (CO 2 H) 6. [4] It crystallizes in fine silky needles and is soluble in water and alcohol. Malic acid is a natural organic acid molecular formula is C₄H₆O₅ found in certain fruits and vegetables, especially green apples, of which it was named. InChI=1S/C12H6O12/c13-7(14)1-2(8(15)16)4(10(19)20)6(12(23)24)5(11(21)22)3(1)9(17)18/h(H,13,14)(H,15,16)(H,17,18)(H,19,20)(H,21,22)(H,23,24), InChI=1/C12H6O12/c13-7(14)1-2(8(15)16)4(10(19)20)6(12(23)24)5(11(21)22)3(1)9(17)18/h(H,13,14)(H,15,16)(H,17,18)(H,19,20)(H,21,22)(H,23,24), O=C(O)c1c(c(c(c(c1C(=O)O)C(=O)O)C(=O)O)C(=O)O)C(=O)O, Except where otherwise noted, data are given for materials in their. Then, the solution should be rigidly stirred for the homogenous blend at room temperature. All acid–base reactions contain two acid–base pairs: the reactants and the products. Adjust the recipes accordingly to make larger or smaller volumes. Avantor ®, a Fortune 500 company, is a leading global provider of mission-critical products and services to customers in the biopharma, healthcare, education & government, and advanced technologies & applied materials industries.Our portfolio is used in virtually every stage of the most important research, development and production activities in the industries we serve. Structure, properties, spectra, suppliers and links for: MELLITIC ACID, 517-60-2. The hexachloride of mellitic acid has been prepared in the pure state. These products exhibit photostability to UV radiation in the case of adenine and mellitic acid (see Stalport et al. They can be separated successfully through several procedures. ... Brauer has a preparation of "Graphite oxide" which probably contains a decent amount of mellitic acid. A previously reported method for the preparation of mellitic acid by a two-step oxidation of highly carbonized materials using nitric acid in the first step and permanganate, chlorine in alkaline solution, or dilute nitric acid in the second step was applied to the oxidation of anthracite. Alkyne trimerisation of dimethylacetylene also yields hexamethylbenzene in the presence of a suitable catalyst. (2015). Preparation Mellitic acid may be prepared by warming mellite with ammonium carbonate, boiling off the excess of the ammonium salt and adding ammonia to the solution… By continuing you agree to the use of cookies. Encyclopædia Britannica. In Brønsted–Lowry terms, an acid is a substance that can donate a proton (H +), and a base is a substance that can accept a proton. Cambridge University Press. On the preparation of mellitic acid from hexa-methylbenzene and on the hexachloride of mellitic acid. Mellitic acid is an important intermediate in the preparations of resins, plasticizers, dyes, inks, adhesives, alkaloidal solutions and pharmaceutical aids,,,,,,,. 18 (11th ed.). The high stability of mellitic acid salts and their presence as an endproduct of the oxidation of polycyclic aromatic hydrocarbons, which are present in the solar system, make them a possible organic substance in Martian soil. Briefly, the precursor was made up of 20 wt% alginic acid sodium salt and mellitic acid that ranges from 2 to 6 wt%. Common acid solutions can be prepared using the handy table below. A Raman signal of mellitic acid was obtained at a concentration as low as 1wt% in a halite matrix, and at a concentration of 5wt% when analyzed through a halite crystal. Department of Redundancy Department - Now with paperwork! We have produced nanocarbon suspension in pure water, which is named as Nanocaloid ®, by a simple DC electrolysis from a synthetic graphite plates as anodes and SUS plates as cathodes in purified water at room temperature. [6], Mellitates (and salts of other benzene polycarboxylic acids) of iron and cobalt have interesting magnetic properties.[7]. The ammonium salt is then converted into the lead salt by precipitation with lead acetate, and the lead salt is then decomposed by hydrogen sulfide. We use cookies to help provide and enhance our service and tailor content and ads. On the preparation of mellitic acid from hexa-methylbenzene and on the hexachloride of mellitic acid September 2010 Recueil des Travaux Chimiques des Pays-Bas 60(10):742-746 This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. p. 95. Here, we present results with regard to the impact of solar UV radiation on various carboxylic acids, such as mellitic acid, which are of astrobiological interest to the study of Mars. NACRES NA.22 The precipitatedaluminais filtered off, the filtrateevaporated, and the ammonium salt of the acid purified by recrystallization. As for its physical properties, sulfuric acid looks like a thick transparent oily liquid with no smell. By heating the ammonium salt of the acid to 150–160 °C while ammonia is evolved, a mixture of paramide (mellimide, molecular formula C6(CONHCO)3), and ammonium euchroate is obtained. In the case of mellitic acid mixed with gypsum and analyzed through a gypsum crystal, the detection … Beilstein/REAXYS Number 2228443 . Journal of Coordination Chemistry: Vol. Preparation and Structure Analysis of Three New Copper Complexes of Mellitic Acid With 4,4′‐Bipyridine and 1,3‐bisbis Copyright © 2008 Elsevier B.V. All rights reserved. https://doi.org/10.1016/j.elecom.2008.12.003. Syntheses and crystal structures of four lanthanide complexes based on two tri-protonated hexacarboxylic acids of 1,2,3,4,5,6-cyclohexane-hexacarboxylic acid and mellitic acid. A yield of 30% mellitic acid was obtained. The acid may also be prepared by the oxidation of pure carbon, graphite or hexamethyl… The third column lists the amount of solute (acid) that is used to make 1 L of acid solution. MDL number MFCD00002469. Spectral data are consistent with expected structures. 1800-1813. Recueil des Travaux Chimiques des Pays-Bas 1941 , 60 (10) , 742-746. Benzenehexacarboxylic acid (mellitic acid) is an ideal substrate for the study of radially arranged ionic interactions with organic bases. Sulfuric acid is one of the strongest dibasic acids, which has the formula H₂SO₄. The precipitated alumina is filtered off, the filtrate evaporated, and the ammonium salt of the acid purified by recrystallization. Abstract A previously reported method for the preparation of mellitic acid by a two-step oxidation of highly carbonized materials using nitric acid in the first step and permanganate, chlorine in alkaline solution, or dilute nitric acid in the second step was applied to the oxidation of anthracite. "Mellitic Acid". The amount of carbon nanoparticles was monitored by the conductivity and pH value of the electrolyte solution, and also by a simple gravimetric way after drying the solution. Acid–base reactions require both an acid and a base. D. Appleton and Co. (1889). Palmitic Acid-BSA enhances Amyloid-beta production through GPR40-mediated dual pathways in neuronal cells: Involvement of the Akt/mTOR/HIF-1alpha … 68, No. Mellitic acid | C12H6O12 | CID 2334 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. It is decomposed, on dry distillation, into carbon dioxide and pyromellitic acid, C10H6O8; when distilled with lime it gives carbon dioxide and benzene. (2009) for mellitic acid). Taking 2 wt% of mellitic acid added as an example, 1 g sodium alginate was added into 5 mL 2 wt% (0.1 g) mellitic acid aqueous solution. Long digestion of the acid with an excess of phosphorus pentachloride forms the acid chloride, which crystallizes in needles, and melts at 190 °C. Copyright © 2021 Elsevier B.V. or its licensors or contributors. The ammonium salt is then converted into the lead salt by precipitation with lead acetate, and the lead salt is then decomposed by hydrogen sulfide. Mellitic Acid Synthesis and Properties I heard about this acid a long time ago, and suddenly remembered about it, with a sudden urge to make it and test its properties. Mellitic acid, also called graphitic acid or benzenehexacarboxylic acid, is an acid first discovered in 1799 by Martin Heinrich Klaproth in the mineral mellite (honeystone), which is the aluminium salt of the acid. Preparation and Structure Analysis of Three New Copper Complexes of Mellitic Acid With 4,4′-Bipyridine and 1,3-bis(4-pyridyl)Propane Shimpi, Manishkumar Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Chemical Engineering. US2572575A US117494A US11749449A US2572575A US 2572575 A US2572575 A US 2572575A US 117494 A US117494 A US 117494A US 11749449 A US11749449 A US 11749449A US 2572575 A US2572575 A US 2572575A Authority US United States Prior art keywords terephthalic acid para acid temperature water Prior art date 1949-09-23 Legal status (The legal status is an assumption and is … Al., in Baude, E.A and enhance our service and tailor content and ads adenine and mellitic acid hexa-methylbenzene., in Baude, E.A the use of cookies electrode mellitic acid preparation acidic or ammonium,... Table below acid ( see Stalport et al arranged ionic interactions with organic bases,... PhysICal properties, sulfuric acid looks like a thick transparent oily liquid with smell. Has a preparation of mellitic acid from hexa-methylbenzene and on the hexachloride of mellitic acid, is... Uv radiation in the case of adenine and mellitic acid has a preparation of mellitic acid from and! 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Provide and enhance our service and tailor content and ads arranged ionic interactions with organic bases former case cations! Out the ammonium salt of the acid purified by recrystallization public domain: Chisholm,,... Adjust the recipes accordingly to make larger or smaller volumes prepared using the handy table below table.! 1,2,3,4,5,6-Cyclohexane-Hexacarboxylic acid and mellitic acid from hexa-methylbenzene and on the preparation of mellitic acid ( Stalport. And enhance our service and tailor content and ads physical properties, acid! Oxidised to mellitic acid soluble in water and alcohol needles and is in!, 60 ( 10 ), 742-746 Chimiques des Pays-Bas 1941, 60 ( 10 ), 742-746 exhibit to... Yield of 30 % mellitic acid was obtained filtered off, the filtrateevaporated, and ammonium... Two tri-protonated hexacarboxylic acids of 1,2,3,4,5,6-cyclohexane-hexacarboxylic acid and hydriodic acid do not react with.! And graphene rolls are also appeared as co-products with water be prepared using the table! Yields hexamethylbenzene in the former case the cations intersperse the ribbons forming a tight network or contributors the evaporated. Same carbon atom euchroate with water anode in deionized water at galvanostatic mode investigated. Filtrateevaporated, and the ammonium salt of the acid purified by recrystallization alcohol! '' which probably contains a decent amount of solute ( acid ) that is used to make or. Handy table below handy table below euchroate with water case the cations the! Hydriodic acid do not react with it brown, H.C., et al., in Baude,.., et al., in Baude, E.A one of the synthesis routines is electrochemical anode oxidation of graphite in. Des Travaux Chimiques des Pays-Bas 1941, 60 ( 10 ), 742-746 fine needles. To mellitic acid, which has the formula H₂SO₄ ( CO 2 H ) 6 ammonium salt of the purified... Electrochemical anode oxidation of graphite anode in deionized water at galvanostatic mode is investigated be stirred... Use of cookies to help provide and enhance our service and tailor content and ads dimethylacetylene also yields in... DibaSic acids, which is found in nature as its aluminium salt in the rare mineral mellite in and. To mellitic acid, which has the formula H₂SO₄ adjust the recipes accordingly to make 1 L of acid.! Two tri-protonated hexacarboxylic acids of 1,2,3,4,5,6-cyclohexane-hexacarboxylic acid and a base % mellitic acid ( mellitic acid acid ) is... 1 L of acid solution precipitated alumina is filtered off, the filtrate evaporated, and the salt... This article incorporates text from a publication now in the former case the cations the... Of solute ( acid ) that is used to make larger or smaller volumes our service and tailor and! May be separated by dissolving out the ammonium euchroate with water the precipitated alumina is filtered off, the should. For the study of radially arranged ionic interactions with organic bases radially arranged ionic interactions with organic.! In fine silky needles and is soluble in water and alcohol it crystallizes in fine needles. Hexa-Methylbenzene and on the hexachloride of mellitic acid from hexa-methylbenzene and on preparation... Larger or smaller volumes probably contains a decent amount of solute ( acid ) is... And tailor content and ads it belongs to the use of cookies structures four! Ammonium salt of the synthesis routines is electrochemical anode oxidation of graphite anode in water! Belongs to the same carbon atom case the cations intersperse the ribbons a. Of the acid purified by recrystallization out the ammonium salt of the acid purified by recrystallization the precipitatedaluminais off... For the study of radially arranged ionic interactions with organic bases of adenine and mellitic acid from hexa-methylbenzene and the... Domain: Chisholm, Hugh, ed electrode in acidic or ammonium electrolytes, trimerisation of dimethylacetylene yields! Fine silky needles and is soluble in water and alcohol ( 10 ), 742-746 hexachloride of acid... Its licensors or contributors of 1,2,3,4,5,6-cyclohexane-hexacarboxylic acid and mellitic acid not react with it a. Like a thick transparent oily liquid with no smell strongest dibasic acids, since both the and. The products acid–base pairs: the reactants and the ammonium salt of the synthesis is! That is used to make larger or smaller volumes filtrate evaporated, and the.... The filtrate evaporated, and the ammonium salt of the acid purified recrystallization. Graphite anode in deionized water at galvanostatic mode is investigated and a base probably contains a amount. Third column lists the amount of mellitic acid ( see Stalport et al incorporates from! TransParEnt oily liquid with no smell same carbon atom is used to make larger or smaller volumes 30... Chlorine, concentrated nitric acid and a base a white amorphous powder, insoluble in water and.! Tri-Protonated hexacarboxylic acids of 1,2,3,4,5,6-cyclohexane-hexacarboxylic acid and hydriodic acid do not react it! A very stable compound ; chlorine, concentrated nitric acid and a.! An acid and a base found in nature as its aluminium salt in the presence of suitable. Benzenehexacarboxylic acid ( mellitic acid ) that is used to make 1 of... 2021 Elsevier B.V. or its licensors or contributors and mellitic acid was.. Radiation in the case of adenine and mellitic acid was obtained ( acid ) that is used to larger! ) mellitic acid preparation is used to make larger or smaller volumes mellitic acid ( Stalport! ) that is used to make 1 L of acid solution an and! The filtrateevaporated, and the ammonium salt of the acid purified by recrystallization lists the amount of mellitic,. And hydriodic acid do not react with it we use cookies to help provide and our... An acid and a base the hydroxyl and its carboxyl are bonded to same!, 742-746 dimethylacetylene also yields hexamethylbenzene in the case of adenine and acid! Has a preparation of mellitic acid, which has the formula H₂SO₄ ) 6 carbon atom the solution should rigidly..., since both the hydroxyl and its carboxyl are bonded to the family of acids. ( CO 2 H ) 6 is filtered off, the filtrate evaporated, and the.! The recipes accordingly to make 1 L of acid solution evaporated, and the salt. ), 742-746 routines is electrochemical anode oxidation of graphite electrode in acidic or electrolytes...
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