2790-09-2

Basic information

• Product Name: 4,6-Dimethylisophthalic Acid
• Synonyms: 1,3-Benzenedicarboxylic acid, 4,6-dimethyl-;4,6-dimethylbenzene-1,3-dicarboxylic acid
• CAS NO: 2790-09-2
• Molecular Formula: C₁₀H₁₀O₄
• Molecular Weight: 194.184
• Mol File: 2790-09-2.mol

Chemical Properties

• Melting Point: 298°C(lit.)
• Boiling Point: 290.62°C (rough estimate)
• Flash Point: 225.5°C
• Appearance: /
• Density: 1.2534 (rough estimate)
• Vapor Pressure: 5.21E-08mmHg at 25°C
• Refractive Index: 1.5430 (estimate)
• Solubility: slightly sol. in Methanol
• CAS DataBase Reference: 4,6-Dimethylisophthalic Acid(CAS DataBase Reference)
• NIST Chemistry Reference: 4,6-Dimethylisophthalic Acid(2790-09-2)
• EPA Substance Registry System: 4,6-Dimethylisophthalic Acid(2790-09-2)

Safety Data

• Hazardous Substances Data: 2790-09-2(Hazardous Substances Data)

Usage

Uses

Used in Polymer and Resin Production:
4,6-Dimethylisophthalic Acid is utilized as a monomer for the synthesis of high-performance polymers and resins, such as polyesters and polyamides. Its incorporation enhances the properties of these materials, contributing to their broad application in different sectors.
Used in Pharmaceutical Synthesis:
In the pharmaceutical industry, 4,6-Dimethylisophthalic Acid serves as a key building block for the development of various pharmaceuticals. Its chemical structure allows for the creation of compounds with specific therapeutic properties, addressing a range of health concerns.
Used in Agrochemical Development:
Similarly, in agrochemicals, 4,6-Dimethylisophthalic Acid is employed in the synthesis of compounds designed to improve crop protection and yield. Its role in formulating effective agrochemicals is crucial for agricultural advancements.
Used in Plastics Industry:
4,6-Dimethylisophthalic Acid is used in the plastics industry to produce materials with enhanced characteristics, such as improved strength and durability, which are essential for various consumer and industrial products.
Used in Textile Industry:
Within the textile industry, 4,6-Dimethylisophthalic Acid is applied to develop high-quality fibers and fabrics. Its use results in textiles with superior properties, such as increased resistance to wear and enhanced comfort for consumers.
Overall, 4,6-Dimethylisophthalic Acid's applications cut across multiple industries, underscoring its significance as a foundational chemical in material science and technology.

InChI:InChI=1/C10H10O4/c1-5-3-6(2)8(10(13)14)4-7(5)9(11)12/h3-4H,1-2H3,(H,11,12)(H,13,14)

Upstream product

• 95-93-2 1,2,4,5-tetramethylbenzene 
• 528-90-5 2,4,5-trimethylbenzoic acid 
• 17309-31-8 1,3-dicyano-4,6-dimethylbenzene 
• 7697-37-2 nitric acid 
• 412035-54-2 (2,4,5-trimethyl-phenyl)-glyoxylic acid 
• 1585-15-5 4,6-bis(chloromethyl)-m-xylene 
• 541-41-3 chloroformic acid ethyl ester 

Downstream Products

• 46725-45-5 dimethyl 4,6-dimethylbenzene-1,3-dicarboxylate 
• 1231764-51-4 C₃₈H₃₂N₂O₂ 
• 366798-30-3 4,6-bis-(2,5-dichloro-benzoyl)-isophthalic acid 
• 57878-28-1 1,5-dibenzoyl-2,4-dimethyl-benzene 
• 52497-38-8 (4,6-dibenzoyl)isophthalic acid 
• 855643-47-9 4,6-bis-dibromomethyl-isophthaloyl bromide 
• 100193-31-5 dimethyl 4,6-dimethyl-5-nitroisophthalate 
• 140410-15-7 5,7,14,16-Tetrakis(acetoxymethyl)-2,11-ditosyl-2,11-diaza<3.3>metacyclophan 
• 140410-13-5 5,7,14,16-tetrakis(ethoxycarbonyl)-2,11-bis(4-tolylsulfonyl)-2,11-diaza<3.3>metacyclophane 
• 140410-08-8 4,6-Bis(brommethyl)benzol-1,3-dicarbonsaeure-diethylester 
• 140410-09-9 4,6-Dimethylbenzol-1,3-dicarbonsaeure-diethylester 
• 133043-80-8 5,7,14,16-tetrakis(bromomethyl)-2,11-bis(4-tolylsulfonyl)-2,11-diaza<3.3>metacyclophane 
• 133043-81-9 5,7,14,16-Tetrakis(mercaptomethyl)-2,11-bis(p-tolylsulfonyl)-2,11-diaza<3.3>metacyclophan 
• 133071-04-2 20,29,44,47-Tetrakis-(4-toluolsulfonyl)-2,11,32,41-tetrathia-20,29,44,47-tetraaza<3.3>(1,3)(1,3)<3.3>(4,6)(1,3)<3.3>(4,6)(1,3)<3.3>(4,6)(4,6)benzeno<4>phan 

Relevant articles and documents

Inclusion complex containing epoxy resin composition for semiconductor encapsulation

The invention is an epoxy resin composition for sealing a semiconductor, including (A) an epoxy resin and (B) a clathrate complex. The clathrate complex is one of (b1) an aromatic carboxylic acid compound, and (b2) at least one imidazole compound represented by formula (II): wherein R2 represents a hydrogen atom, C1-C10 alkyl group, phenyl group, benzyl group or cyanoethyl group, and R3 to R5 represent a hydrogen atom, nitro group, halogen atom, C1-C20 alkyl group, phenyl group, benzyl group, hydroxymethyl group or C1-C20 acyl group. The composition has improved storage stability, retains flowability when sealing, and achieves an effective curing rate applicable for sealing delicate semiconductors.

The complex synergy of water in the metal/bromide autoxidation of hydrocarbons caused by benzylic bromide formation

One of the most active and selective catalysts in homogeneous liquid phase oxidation using molecular oxygen (O2) is a mixture of cobalt, manganese and bromide salts in acetic acid. It has been used to produce hundreds of different carboxylic acids in high yield and purity including the commercial production of terephthalic acid from p-xylene. Water is normally a by-product in these reactions and it is shown here that its concentration is an important reaction variable. In anhydrous acetic acid, with reagents with sufficiently strong electron-withdrawing substitutents (toluene, 4-carboxytoluene, 4-chlorotoluene), all of the active bromide becomes inactive via benzylic bromide formation. The Co/Mn/ Br catalyst is therefore converted to a Co/Mn catalyst which is dubbed 'catalyst failure' because of its undesirable characteristics of lower activity, decreased selectivity especially towards over-oxidation and color formation. For 4-chlorotoluene, increasing the water concentration to 5 weight % initially decreases the rate of reaction but eventually is more active and selective because the oxidation and hydrolysis of the benzylic bromide allows for sufficient active catalytic bromide. It is shown that benzylic bromides do not 'promote' the reaction and that both oxidation and solvolysis of the benzylic bromide occurs during autoxidation. During polymethylbenzene oxidation, benzylic bromide formation occurs only with the most reactive methyl group. The complex factors during metal/bromide autoxidation -some favored by increased water concentration and others detrimental - are outlined.

From Fourfold Functionalized Cyclophanes to Tube-Shaped Molecules

A series of fourfold functionalized 2,11-dithia- and 2,11-diazacyclophanes 15-17 and 18-22, resp., is prepared by using a new multistep-strategy starting from 7 of m-xylene, respectively.The cyclophanes are used to construct tube-shaped molecules of