29811-04-9

Basic information

• Product Name: 1,2,3,6-tetrahydro-4-(4-methylpent-3-enyl)phthalic anhydride
• Synonyms: 1,2,3,6-tetrahydro-4-(4-methylpent-3-enyl)phthalic anhydride;1,3-Isobenzofurandione, 3a,4,7,7a-tetrahydro-5-(4-methyl-3-pentenyl)-;4-(4-Methyl-3-pentenyl)-4-cyclohexene-1,2-dicarboxylic anhydride;5-(4-Methyl-3-pentenyl)-4-cyclohexene-1,2-dicarboxylic anhydride
• CAS NO: 29811-04-9
• Molecular Formula: C₁₄H₁₈O₃
• Molecular Weight: 234.29092
• EINECS: 249-870-5
• Mol File: 29811-04-9.mol
• Article Data: 6

Chemical Properties

• Boiling Point: 372.6°Cat760mmHg
• Flash Point: 173°C
• Appearance: /
• Density: 1.099g/cm³
• Vapor Pressure: 9.54E-06mmHg at 25°C
• Refractive Index: 1.514
• CAS DataBase Reference: 1,2,3,6-tetrahydro-4-(4-methylpent-3-enyl)phthalic anhydride(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2,3,6-tetrahydro-4-(4-methylpent-3-enyl)phthalic anhydride(29811-04-9)
• EPA Substance Registry System: 1,2,3,6-tetrahydro-4-(4-methylpent-3-enyl)phthalic anhydride(29811-04-9)

Safety Data

• Hazardous Substances Data: 29811-04-9(Hazardous Substances Data)

Usage

General Description

1,2,3,6-tetrahydro-4-(4-methylpent-3-enyl)phthalic anhydride is a chemical compound that is commonly known as tetrahydrophthalic anhydride. It is a cyclic anhydride of tetrahydrophthalic acid and is used as a curing agent in the production of epoxy resins. It is also used in the production of polyester resins, alkyd resins, and as a hardener for coatings. 1,2,3,6-tetrahydro-4-(4-methylpent-3-enyl)phthalic anhydride has a strong odor and can cause irritation to the skin, eyes, and respiratory system upon direct contact or inhalation. It is important to handle and store this chemical with care to prevent any potential health hazards.

InChI:InChI=1/C14H18O3/c1-9(2)4-3-5-10-6-7-11-12(8-10)14(16)17-13(11)15/h4,6,11-12H,3,5,7-8H2,1-2H3

Upstream product

• 108-31-6 maleic anhydride 
• 123-35-3 7-methyl-3-methene-1,6-octadiene 

Downstream Products

• 65094-68-0 (+/-)-5,5-dimethyl-1,2,3,4,5,6,7,8-octahydro-naphthalene-2r,3c-dicarboxylic acid-anhydride 
• 107152-19-2 (+/-)-4-(4-methyl-pent-3-enyl)-cyclohex-4-ene-1r,2c-dicarboxylic acid dimethyl ester 
• 107821-52-3 (+/-)-4-(4-methyl-pent-3-enyl)-cyclohex-4-ene-1r,2c-dicarboxylic acid 

Relevant articles and documents

Study on the synthesis of bio-based epoxy curing agent derived from myrcene and castor oil and the properties of the cured products

Two novel bio-based epoxy curing agents derived from myrcene (MMY) and castor oil (CMMY) were prepared, respectively. Their chemical structures were confirmed by Fourier transform infrared spectrometry (FTIR) and 1H nuclear magnetic resonance (1HNMR). The two curing agents were used to cure a commercial epoxy resin (E-51). The MMY-cured epoxy resin had very poor toughness while the CMMY-cured epoxy resin had low strength, so the two curing agents were mixed at different weight ratios to form new curing agents for the E-51 epoxy resin. The tensile strength, impact strength, dynamic mechanical properties, thermal stability, micro-morphology of fracture surfaces and gel content of the cured epoxies were all investigated. The curing behaviors of the cured epoxies were studied by differential scanning calorimetry (DSC). Results show that the elongation at break is increased and the tensile strength and glass transition temperature are decreased with increasing weight ratio of CMMY, while the impact strength is increased gradually. The initial degradation temperatures of all the cured epoxy resins were above 367 °C. The gel contents of the epoxy resins cured with the mixed curing agents were above 87%. The activation energies for the systems with MMY and CMMY were 75.90 and 67.69 kJ mol?1, respectively.

Preparation method of terpenyl plasticizer

The invention provides a preparation method of a terpenyl plasticizer. The preparation method comprises the following steps: by taking 4-(4-methyl-3-pentenyl)-4-cyclohexene-1,2-anhydride and isooctanol as raw materials, adding a catalyst and a water-carrying agent, and performing an esterification reaction for a certain period of time at a certain temperature; after the reaction, reclaiming the water-carrying agent cyclohexane and isooctanol through reduced pressure distillation; and separating out the catalyst to obtain the terpenyl plasticizer. The molar ratio of 4-(4-methyl-3-pentenyl)-4-cyclohexene-1,2-anhydride to isooctanol is (1:3.0)-(1:4.0). The prepared terpenyl plasticizer has the advantages of excellent performance and environmental friendliness.

Surfactants and Solvents Containing Diels-Alder Adducts

Surfactants and solvents containing derivatized adducts formed from Diels-Alder reactions of terpenes and unsaturated carboxylic acids or their derivatives are disclosed. Processes for making and derivatizing the Diels-Alder adducts are also disclosed.