Name | diphenyl isophthalate |
Synonyms | Diphenylm-phthalate diphenyl-3-phthalate Diphenyl Isophtalate Diphenylisophthalate DIPHENYL ISOPHTHALATE diphenyl isophthalate Diphenyl 1,3-phthalate ISOPHTHALIC ACID DIPHENYL ESTER diphenyl benzene-1,3-dicarboxylate ISOPHTHALIC ACID, BIS-PHENYL ESTER diphenyl benzene-1,2-dicarboxylate 1,3-BENZENE DICARBOXYLIC ACID DIPHENYL ESTER |
CAS | 744-45-6 |
EINECS | 212-014-6 |
InChI | InChI=1/C20H14O4/c21-19(23-17-10-3-1-4-11-17)15-8-7-9-16(14-15)20(22)24-18-12-5-2-6-13-18/h1-14H |
Molecular Formula | C20H14O4 |
Molar Mass | 318.32 |
Density | 1,2 g/cm3 |
Melting Point | 136-138 °C (lit.) |
Boling Point | 275 °C (10 mmHg) |
Flash Point | 223 °C |
Water Solubility | insoluble |
Vapor Presure | 4.32E-10mmHg at 25°C |
Appearance | powder to crystal |
Color | White to Almost white |
Storage Condition | Sealed in dry,Room Temperature |
Refractive Index | 1.5400 (estimate) |
MDL | MFCD00046051 |
Physical and Chemical Properties | White crystals. Melting point 141-142 °c. Soluble in ethanol and acetone, insoluble in water. |
Safety Description | 24/25 - Avoid contact with skin and eyes. |
WGK Germany | 3 |
HS Code | 29173990 |
white crystals. Soluble in ethanol, acetone.
dimethyl isophthalate was used as raw material to carry out transesterification reaction with phenol under the catalysis of n-butyl titanate, then distilled under reduced pressure, and M-xylene was added for recrystallization, and finally obtained by separation and drying.
It can be used as a raw material for aromatic heterocyclic polymers (such as polybenzimidazole, polybenzothiazole and other high temperature resistant polymers), and can also be used as a toughening agent for polyamide engineering plastics.
The bag is packed in a woven bag with a 50kg inner plastic bag. Store in a cool, dry, ventilated warehouse. Keep away from fire and heat source. Strictly moisture-proof and waterproof. Light loading and light unloading during handling to prevent package breakage.
NIST chemical information | information provided by: webbook.nist.gov (external link) |
EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
Application | used in organic synthesis, is one of the monomers of PBT heat-resistant polymer. It is also used as a plasticizer for nylon-based resins. It can be used as the raw material of aromatic heterocyclic polymers (such as polybenzimidazole, polybenzothiazole and other high temperature resistant polymers), and can also be used as a toughening agent for polyamide engineering plastics. |
production method | with dimethyl isophthalate as raw material, with phenol under the catalysis of butyl titanate, transesterification reaction was carried out, and then after reduced pressure distillation, M-xylene was added and recrystallized. Finally, it was obtained by separation and drying. |