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Dimethyl Isophthalate
Molecular formula£ºC8H10O4
Molecular Weight£º194.19
CAS Number£º1459-93-4
Applications: One of the principal uses of Dimethyl
Isophthalate is as an intermediate in the 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.
It is used primarily to improve the clarity and strenghth of PET
carbonated drink bottles.
Another significant applicant area is in engineering plasti¡£
Specifications£º
| Properties | Values |
| Appearance | White, flake solid |
| Purity, % min | ¡Ý99£¨HPLC£© |
| Melting Point (¡ãC) | 67¡«69 |
| Acid content£¨C8H10O4),% | ¡Ü0.1 |
| Moisture (wt %) max | ¡Ü0.5(w/w) |
| Saponification value | 575¡À3mgKOH/g |
Packaging: 25 kg, in plastic lined polybag ¡¡
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