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Home > Encyclopedia > Tetrahydrophthalic Anhydride

Tetrahydrophthalic Anhydride

Tetrahydrophthalic Anhydride structure
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Description

white flaky solid

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Basic Attributes

  • 85-43-8

  • C8H8O3

  • 152.147

  • 152.047

  • 43.37

  • 0.6522

  • 201-605-4

  • KMOUUZVZFBCRAM-UHFFFAOYSA-N

  • 3

  • 0

  • 0

Characteristics

  • White crystal powder

  • 1,375 g/cm3

  • 101-102°C

  • 195°C 5mm

  • 157°C

  • 1.529

  • Solubility in water: reaction

  • Treasury ventilation low temperature drying, and oxidants, amine stored separately

  • Vapour pressure, Pa at 20°C: 1

  • Relative vapour density (air = 1): 5.3

Safety Information

  • III

  • 8

  • 2698

  • R41

  • S26; S36/37/39

  • GW5775000

  • Xn

  • Separated from food and feedstuffs. Dry. Well closed.

  • P261, P272, P273, P280, P285, P302+P352, P304+P341, P305+P351+P338, P310, P321, P333+P313, P342+P311, P363, P501

  • H317

Usage

1,2,3,6-Tetrahydrophthalic anhydride (tetrahydrophthalic anhydride for short, △4) is an intermediate for the preparation of the insecticide tetramethrin and the fungicide captan. It can also be used to prepare alkyd resins. , Unsaturated polyester resin, plasticizer and curing agent, etc.

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Production Methods

The maleic anhydride was added to the reaction kettle, heated to the total melting, stirring by adding solvent benzene, stirring and stirring, stirring and heating to 100-110 ℃, through the addition reaction of butadiene 18-22h, the reaction After the end of the solvent benzene distilled, cooled by the condenser after the recycling cycle, the reaction solution by suction, drying that was finished.

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