2021-21-8

Basic information

• Product Name: 1,2,3,6-tetrahydro-N-methylphthalimide
• Synonyms: 1,2,3,6-tetrahydro-N-methylphthalimide;2-Methyl-3a,4,7,7a-tetrahydro-2H-isoindole-1,3-dione;3a,4,7,7a-Tetrahydro-2-methyl-1H-isoindole-1,3(2H)-dione;4-Cyclohexene-1,2-dicarboximide, N-methyl-;Einecs 217-965-0;N-Methyl-4-cyclohexene-1,2-dicarboximide;Phthalimide, 1,2,3,6-tetrahydro-N-methyl-
• CAS NO: 2021-21-8
• Molecular Formula: C₉H₁₁NO₂
• Molecular Weight: 165.18914
• EINECS: 217-965-0
• Mol File: 2021-21-8.mol
• Article Data: 2

Chemical Properties

• Boiling Point: 293.03°C (rough estimate)
• Flash Point: 139.2°C
• Appearance: /
• Density: 1.1603 (rough estimate)
• Vapor Pressure: 0.00101mmHg at 25°C
• Refractive Index: 1.5270 (estimate)
• CAS DataBase Reference: 1,2,3,6-tetrahydro-N-methylphthalimide(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2,3,6-tetrahydro-N-methylphthalimide(2021-21-8)
• EPA Substance Registry System: 1,2,3,6-tetrahydro-N-methylphthalimide(2021-21-8)

Safety Data

• Hazardous Substances Data: 2021-21-8(Hazardous Substances Data)

Usage

Chemical structure

A phthalimide ring with a methyl and a tetrahydro substitution.

Common use

Reactive diluent in the production of epoxy resins.

Function in epoxy resins

Reduces viscosity and improves processing properties.

Additional use

Curing agent for epoxy resins, participating in cross-linking reaction.

Other applications

Synthesis of pharmaceuticals and agrochemicals.

Safety precautions

May cause irritation to skin, eyes, and respiratory system.

Hazardous nature

Potentially harmful if ingested or inhaled in large amounts.

InChI:InChI=1/C9H11NO2/c1-10-8(11)6-4-2-3-5-7(6)9(10)12/h2-3,6-7H,4-5H2,1H3

Upstream product

• 74-89-5 methylamine 
• 85-43-8 1,2,3,6-Tetrahydrophthalic anhydride 
• 930-88-1 N-methylmaleimide 
• 106-99-0 buta-1,3-diene 

Downstream Products

• 550-44-7 N-methylphthalimide 

Relevant articles and documents

Solvent-free Diels-Alder reaction in a closed batch system

Solvent-free Diels-Alder reactions were carried out by heating a mixture of a volatile diene, such as 1,3-butadiene, isoprene, or 2,3-dimethyl-1,3- butadiene, and a dienophile, such as methyl vinyl ketone, methyl acrylate, or maleic anhydride, in a closed batch reactor. High yields of Diels-Alder products were obtained without using solvents and catalysts within a short reaction time in most of the reactions. In particular, several reactions of dienophiles with 1,3-butadiene, which is known as a diene with low reactivity because of its gaseous form, also proceeded with high yields of Diels-Alder products in the closed batch reactor under conditions pressured by the reactant vapor. Solvent-free reactions provided high yields compared to reactions in solvent since the reaction heat directly resulted in increasing the reaction temperature and pressure. Energy in the exothermic reaction was used effectively in the closed batch system under solvent-free conditions.