19438-61-0

Basic information

• Product Name: 4-Methylphthalic anhydride
• Synonyms: 1,3-Isobenzofurandione, 5-methyl-;5-Methyl-2-benzofuran-1,3-dione;5-methyl-3-isobenzofurandione;4-METHYLPHTHALIC ANHYDRIDE;4-Methylphalic Anhydride;4-METHYLPHTHALIC ANHYDRIDE 95+%;Resorcinol dibenzoate;5-METHYLISOBENZOFURAN-1,3-DIONE
• CAS NO: 19438-61-0
• Molecular Formula: C₉H₆O₃
• Molecular Weight: 162.14
• EINECS: 243-073-6
• Product Categories: Diels-Alder Adducts;Phthalic Acids, Esters and Derivatives;Organics;Anhydride Monomers;Monomers;Polymer Science
• Mol File: 19438-61-0.mol

Chemical Properties

• Melting Point: 90-92 °C(lit.)
• Boiling Point: 295 °C(lit.)
• Flash Point: 156.333 °C
• Appearance: White to yellow-orange/Flakes or Crystalline Powder
• Density: 1.2599 (rough estimate)
• Vapor Pressure: 0.00157mmHg at 25°C
• Refractive Index: 1.5380 (estimate)
• Storage Temp.: under inert gas (nitrogen or Argon) at 2-8°C
• Water Solubility: insoluble
• CAS DataBase Reference: 4-Methylphthalic anhydride(CAS DataBase Reference)
• NIST Chemistry Reference: 4-Methylphthalic anhydride(19438-61-0)
• EPA Substance Registry System: 4-Methylphthalic anhydride(19438-61-0)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26-37/39-36-36/37/39
• WGK Germany: 3
• Hazardous Substances Data: 19438-61-0(Hazardous Substances Data)

Usage

Chemical Properties

white to yellow-orange flakes or

InChI:InChI=1/C9H6O3/c1-5-2-3-6-7(4-5)9(11)12-8(6)10/h2-4H,1H3

Upstream product

• 106-43-4 para-chlorotoluene 
• 108-88-3 toluene 
• 1694-82-2 cis-3a,4,7,7a-tetrahydro-5-methyl-1,3-isobenzofurandione 
• 19438-59-6 4-Methyl-Δ¹-tetrahydrophthalic anhydride 
• 7726-95-6 bromine 
• 64-19-7 acetic acid 
• 3425-89-6 4-methyl-1,2,3,6-tetrahydrophthalic anhydride 
• 5999-20-2 4,5-dimethylphthalic anhydride 
• 4316-23-8 4-methylphthalic acid 

Downstream Products

• 5229-62-9 5-Methyl-2-(4-fluor-naphthoyl-⁽¹⁾)-benzoesaeure 
• 20116-65-8 dimethyl 4-methylphthalate 
• 1443427-29-9 N-benzyl-1,1,3,3,5-pentamethylisoindoline 
• 58293-99-5 2-(4-(dimethylamino)-2-hydroxybenzoyl)-4-methylbenzoic acid 
• 54120-64-8 5-methylphthalide 
• 72985-23-0 6-methylisobenzofuran-1(3H)-one 
• 220361-01-3 3-(3-ethoxy-4-methoxyphenyl)-3-(5-methyl-1,3-dioxoisoindolin-2-yl)propanoic acid 
• 58230-64-1 N-(4-nitro-o-tolyl)-4-methylphthalimide 
• 42760-52-1 4-Methyl-5-nitro-phthalic acid 
• 1098083-48-7 5-bromo-4-methylphthalic acid 
• 167992-81-6 dimethyl 4-methyl-5-nitro-phthalate 
• 70945-54-9 1,4-Bis-(2-dimethylamino-ethylamino)-6-methyl-anthraquinone 
• 1827-14-1 5-Methyl-2-<4-fluor-naphthyl-(1)-methyl>-benzoesaeure 
• 3837-38-5 2,6-dimethylanthracene-9,10-dione 

Related news

Experiment, correlation and molecular simulation for solubility of 4-Methylphthalic anhydride (cas 19438-61-0) in different organic solvents from T = (278.15 to 318.15) K08/17/2019

In this work, the solubility of 4-methylphthalic anhydride in eight organic solvents (methyl acetate, acetone, acetonitrile, toluene, butyl acetate, carbon tetrachloride, cyclohexane, n-heptane) was studied experimentally by the isothermal saturation method at temperatures from (278.15 to 318.15...detailed

Relevant articles and documents

METHOD FOR PRODUCING CARBOXYLIC ACID ANHYDRIDE, METHOD FOR PRODUCING CARBOXYLIC IMIDE, AND METHOD FOR MANUFACTURING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER

A method for producing a carboxylic acid anhydride includes heating a composition containing a specific compound in a solvent to yield the carboxylic acid anhydride. The solvent is an aprotic polar solvent having a boiling point of 50° C. or more.

Dual fluorescent N-Aryl-2,3-naphthalimides: Applications in ratiometric DNA detection and white organic light-emitting devices

A ten element matrix of 5- and 6-substituted-(2,3)-naphthalimides was prepared for the appropriate placement of substituents necessary to promote dual fluorescence (DF). As prescribed by our balanced seesaw photophysical model this matrix yielded nine new DF dyes out of a possible ten compounds. From this set of nine DF dyes, 4-fluoronaphthalic amide (37) was selected as a probe for ratiometric detection of DNA and demonstration of panchromatic emission.

Method of preparing photosensitive resin composition

A 6,6′-dialkyl-3,3′,4,4′-biphenyltetracarboxylic dianhydride is prepared by brominating a 4-alkylphthalic anhydride at its 5-position, and coupling the bromination product in the presence of a nickel catalyst; A photosensitive resin composition containing a polyimide precursor having repetitive units of general formula (7) is applied onto a substrate, exposed to i-line, developed and heated to form a polyimide relief pattern. wherein Y is a divalent organic group, R7and R8are OH or a monovalent organic group, R9and R10are a monovalent hydrocarbon group, R11, R12and R13are a monovalent hydrocarbon group, a and b are an integer of 0 to 2, c is an integer of 0 to 4, and m is an integer of 0 to 3.

Process for the preparation of isobenzofurandiones

Isobenzofurandiones are obtained in particularly advantageous manner by the dehydrogenation of tetrahydroisobenzofurandiones in the presence of catalysts at elevated temperature by a process in which distilled tetrahydro-isobenzofurandiones are heated to temperatures of between 120° and 300° C. in the presence of supported palladium and/or platinum catalysts and in the presence of maleic acid derivatives in a trickle-phase or liquid-phase procedure, the temperature in the liquid-phase procedure being increased at a rate of 0.6° to 3° C. per minute above 80° to 110° C.

Process for producing substituted phthalic acid compounds

A process for producing a substituted phthalic acid which comprises heating a substituted tetrahydrophthalic acid compound having a substituent in at least one of the 3-, 4-, 5- and 6-positions in the presence of sulfur to dehydrogenate it, and heat-treating the product in the presence of water optionally together with an organic solvent. As required, the heat-treated product is dehydrocyclized to form a substituted phthalic acid anhydride.

CATALYTIC CONVERSIONS OF METHYLTETRAHYDROPHTHALIC ANHYDRIDE.

Methyltetrahydrophthalic anhydride (MTHPA) and mixtures of its isomers are among the widely used intermediates for production of polyester and epoxy resins. Information on methods of production of MHHPA and MPA (methylpthalic anhydride) is confined to a few patents. The possibility of obtaining them from MTHPA by hydrogenation and dehydrogenation respectively is of interest. Experimental evidence shows that alumina-palladium catalyst with a palladium content of 5. 0 mass % has the highest activity and selectivity in synthesis of 4-MPA. The yield of 4-MPA under the optimal conditions found is 60-61% on the converted feed, with 100% conversion. Alumina-palladium catalyst with a palladium content of 3. 0 mass % has the highest activity and selectivity in synthesis of 4-MHHPA. Under the optimal conditions found the yield of 4-MHHPA is 75-80% on the converted feed, with 100% conversion.