Diphenyl isophthalate CAS 744-45-6

Diphenyl isophthalate

【Chemical Name】 Diphenyl isophthalate

【Other Name】 Isophthalic acid diphenyl ester; Diphenyl 1,3-phthalate; DPIP

【CAS No.】 744-45-6

【Molecular Formula】 C20H14O4

【Molecular Weight】 318.32 g/mol

【Product properties】 White to off-white crystalline powder. Melting point: 136–142°C. Soluble in ethanol and acetone; insoluble in water. Purity ≥99.0%.

【Storage】 Store in a cool, dry, well‑ventilated area. Keep container tightly sealed, away from moisture and direct sunlight.

【Packing】  25 kg drums for commercial supply.

【Application】 Key monomer for high‑performance polymers (PBT, polybenzimidazole, polybenzoxazole). Used as a plasticizer for nylon resins and a toughening agent for engineering plastics. Also applied in specialty coatings and adhesives.

【Product Specification】 Purity: ≥99.0% (GC).