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| Chemical Structure | Methyltetrahydrophthalic Anhydride (MTHPA) is a cyclic dicarboxylic anhydride, and its chemical structure is derived from tetrahydrophthalic acid with the addition of a methyl group. |
| Uses | Methyltetrahydrophthalic Anhydride (MTHPA) is commonly used as a curing agent for epoxy resins. It contributes to the cross-linking process, enhancing the strength, durability, and thermal resistance of the cured epoxy. |
| Characteristics | MTHPA imparts unique resistance to UV radiation and atmospheric agents due to its cycloaliphatic structure. It exhibits outstanding mechanical and electrical properties and excellent color retention. |
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Flammability and Explosibility |
Nonflammable |
| Isomeric SMILES | CC1=CCC2C(C1)C(=O)OC2=O |
| XLogP3-AA | 0.7 |
| Complexity | 278 |
InChI:InChI=1/C9H10O3/c1-5-2-3-6-7(4-5)9(11)12-8(6)10/h2-3,5-7H,4H2,1H3
Acid anhydrides are low-molecular-weight chemicals known to cause respiratory irritancy and allergy. Skin allergy has on rare occasions been reported. 2 workers contracted hives and itching on uncovered skin after 2 months exposure to methyltetrahydrophthalic anhydride (MTHPA) and methylhexahydrophthalic anhydride (MHHPA), to which they had airborne exposure.
One hundred and forty four current and 26 former workers in a plant producing barrels for rocket guns from an epoxy resin containing methyltetrahydrophthalic anhydride (MTHPA; time weighted average air concentration up to 150 micrograms/m3) were studied.. …
maleic anhydride
isoprene
4-methyl-1,2,3,6-tetrahydrophthalic anhydride
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for 0.0833333h; stereoselective reaction; Microwave irradiation; Sealed tube;
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99% |
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With methyltrioxorhenium(VII); In acetone; for 0.333333h; Ambient temperature;
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95% |
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With silica-supported ionic liquid [1-methyl-3-(triethoxysilylpropyl)imidazolium ][Ga3Cl10]; at 25 ℃; for 3h; Ionic liquid;
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93% |
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In toluene; at 155 ℃; for 0.0833333h; Microwave irradiation;
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92% |
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In o-xylene; at 25 ℃; for 72h; Sealed tube; Inert atmosphere; Sonication;
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65% |
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aluminium trichloride; In carbon dioxide; benzene; at 32.9 ℃; under 55879.4 Torr; Mechanism; supercritical conditions; 0 -> 1.0 min; other pressure: 7.85 MPa
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aluminium trichloride; In carbon dioxide; benzene; at 32.9 ℃; for 0.0166667h; under 55879.4 Torr; supercritical conditions;
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In 1,4-dioxane; at 30 ℃; Yield given;
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In 1,4-dioxane; at 30 ℃; Rate constant; Kinetics;
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In xylene; at 25 ℃; kinetic isotope effects;
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In nitrobenzene; at 28 ℃; Kinetics;
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In carbon dioxide; at 60 ℃; under 76000 Torr; Kinetics;
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In neat (no solvent); at 30 ℃; for 1h; Green chemistry;
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93.4 %Chromat. |
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With N-[2-(D-glucopyranosyl)ethyl]-N,N,N-trimethylammonium bistriflamide; at 20 ℃; for 1h; diastereoselective reaction; Inert atmosphere; Green chemistry;
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99 %Chromat. |
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In tetrahydrofuran; at 20 ℃; for 2h;
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In dichloromethane; at 20 ℃; for 5h; diastereoselective reaction;
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isoprene
4-methyl-1,2,3,6-tetrahydrophthalic anhydride
| Conditions | Yield |
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(+/-)-4-methyl-cyclohex-4-ene-1r,2t-dicarbonitrile
maleic anhydride
isoprene
cis-3a,4,7,7a-tetrahydro-5-methyl-1,3-isobenzofurandione
(+/-)-4c-methyl-cyclohexane-1r,2t-dicarboxylic acid-anhydride
(+/-)-4t-methyl-cyclohexane-1r,2t-dicarboxylic acid-anhydride
(+/-)-4t-methyl-cyclohexane-1r,2c-dicarboxylic acid-anhydride
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CAS:120-74-1
Molecular Formula:C<sub>8</sub>H<sub>10</sub>O<sub>2</sub>
Molecular Weight:138.16
CAS:935-79-5
Molecular Formula:C<sub>8</sub>H<sub>8</sub> O<sub>3</sub>
Molecular Weight:152.15
CAS:1450933-18-2
Molecular Formula:C25H15Br
Molecular Weight:395.3
