4-Phenylethynylphthalic Anhydride , >98.0%(HPLC) , 119389-05-8

CAS NO.：119389-05-8

Empirical Formula: C16H8O3

Molecular Weight: 248.23

MDL number: MFCD10574892

EINECS: 601-604-2

PRODUCT Properties

• Melting point: 152 °C
• Boiling point: 466.9±28.0 °C(Predicted)
• Density: 1.38±0.1 g/cm3(Predicted)
• storage temp.: Inert atmosphere,Room Temperature
• Water Solubility: Practically insoluble in water
• form: powder to crystal
• color: White to Yellow to Green
• InChI: InChI=1S/C16H8O3/c17-15-13-9-8-12(10-14(13)16(18)19-15)7-6-11-4-2-1-3-5-11/h1-5,8-10H
• InChIKey: UPGRRPUXXWPEMV-UHFFFAOYSA-N
• SMILES: C1(=O)C2=C(C=C(C#CC3=CC=CC=C3)C=C2)C(=O)O1
• EPA Substance Registry System: 1,3-Isobenzofurandione, 5-(phenylethynyl)- (119389-05-8)

Description and Uses

4-Phenylethynylphthalic anhydride (PEPA) is a phthalic anhydride derivative with a phenylethynyl substituent in the 4-position.PEPA is commonly used as a reactive capping agent for polyimide synthesis and aromatic oligo-polyimides. Fluorinated aromatic oligoimides terminated with a phenylethynyl substituent melt completely in the range of 250-350 °C to form a low viscosity liquid. The melt viscosity of oligoimides increases with increasing molecular weight. After thermal curing at 371 °C, the thermoset polyimide resins produced show good thermal and mechanical properties. They showed a high glass transition temperature (Tg) of 300 °C, a flexural strength of 135.5 MPa, a flexural modulus of 3.1 GPa, a tensile strength of 65.7 MPa, and an elongation at break of 3.9%.

Safety

• Symbol(GHS): GHS07
• Signal word: Warning
• Hazard statements: H315-H319
• Precautionary statements: P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313
• Risk Statements: 36/37/38
• Safety Statements: 26-36/37/39
• HS Code: 29173990