Isophthalic acid CAS 121-91-5
Isophthalic acid is a colorless crystal crystallized from water or ethanol. Slightly soluble in water, insoluble in benzene, toluene and petroleum ether, soluble in methanol, ethanol, acetone and glacial acetic acid. Isophthalic acid has a certain risk, with powder or particles mixed with air, dust explosion may occur.
| Item | Specification |
| Melting point | 341-343 °C (lit.) |
| Boiling point | 214.32°C (rough estimate) |
| Density | 1,54 g/cm3 |
| Vapor pressure | 0Pa at 25℃ |
| Refractive Index | 1.5100 (estimate) |
| pKa | 3.54(at 25℃) |
| Water solubility | 0.01 g/100 mL (25 ºC) |
Isophthalic acid is mainly used in the production of unsaturated polyester resin, PET copolymer tree finger and alkyd resin. In addition, isophthalic acid as raw material can also be used to prepare polyisophthalic acid allyl ester (DAIP) resin, which is widely used in the manufacture of precision and complex high-temperature insulating parts and impregnated laminates. Preparation of diethyl isophthalate (DEIP) as a special Chemicalbook solvent in the production of toluene diisocyanate; Preparation of polybenzimidazole used as an adhesive for aluminum alloy, stainless steel and other metal materials, metal honeycomb structure, polyimide film, silicon wafer and other materials; Diisooctyl isophthalate, a colorless oil liquid plasticizer with good compatibility with PVC, nitrocellulose, polystyrene and other resins, was prepared.
25kg/drum or according to customer requirements.
Isophthalic acid CAS 121-91-5
Isophthalic acid CAS 121-91-5
