Name： DMIP;Dimethyl isophthalate
Brief：

Synonyms:Dimethyl 1,3-benzenedicarboxylate; Isophthalic acid dimethyl ester

Description:White, flaked solid
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    Information：

CAS:1459-93-4

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Product              Chemical Name                             Dimethyl Isophthalate
Identification    Chemical Abstracts Registry No. 1459-93-4
Molecular Formula                         C10H10O4
Molecular Weight                           194
Property                   Specification
Specifications
Purity, wt %                          99.5 minimum
Acidity, as acetic acid, %             0.01
Moisture (K-F), %                         0.10

Typical Properties
Property                     Value
Physical State                                White, flaked solid
Flash Point, C.O.C., °F                 345
Melting Point, °C                           67 – 68
Boiling Point, °C
@ 10 mm Hg                                   156
Specific Gravity                             1.1477 @ 85° C (molten)
Vapor Pressure                             93.7 mm Hg @ 208°C
Vapor Density                                6.8
Viscosity, Brookfield, cps Spindle No. 1, 30 rpm
70°C                4.9
85°C                3.1
100°C              2.5

 
Solubility           Soluble in most organic solvents
Properties         Insoluble in H2O
Applications     One of the principal uses of Dimethyl Isophthalate is as an intermediate inthe synthesis of polyesters. In order to obtain the structural strength needed in fibers and films the polyester must be of high molecular weight. The most efficient route to these high molecular weights is through transesterification of methyl ester with a glycol. A specially purified methyl ester is needed in this application.
Isophthalate may be incorporated as the sole acid moiety in polyester fibers and films. However, it is often used in combination with other acid moieties to provide properties not available with the homopolymer.
 

 

 

 
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