4-Phenylethynylphthalic anhydride
Also known as: 4-Phenylethynylphthalic anhydride, 5-(2-phenylethynyl)-2-benzofuran-1,3-dione, 5-(Phenylethynyl)isobenzofuran-1,3-dione, 5-(Phenylethynyl)-2-benzofuran-1,3-dione, 4-PEPA
4-Phenylethynylphthalic anhydride (CAS 119389-05-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C16H8O3 and a molecular weight of 248.233 g/mol. Key properties include a melting point of 152ºC, a boiling point of 466.9±28.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 235.4±21.2 °C. It is listed by 1 supplier; request a quote for pricing. Record last updated Aug 21, 2026.
- CAS No.
- 119389-05-8
- Jingsj CID
- J-732-9
- Molecular Formula
- C16H8O3
- Molecular Weight
- 248.233 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
Made to Order | - | - | CN China |
Physicochemical Properties
| Melting Point | 152ºC |
|---|---|
| Boiling Point | 466.9±28.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 235.4±21.2 °C |
| Exact Mass | 248.047348 |
| PSA | 43.37000 |
| LogP | 4.16 |
| Vapor Pressure | 0.0±1.2 mmHg at 25°C |
| Refractive Index | 1.679 |
Customs & Trade Information
| HS Code | 2932999099 |
|---|---|
| Summary | 2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 4-Phenylethynylphthalic anhydride?
The CAS number of 4-Phenylethynylphthalic anhydride is 119389-05-8.
What are the molecular formula and molecular weight of 4-Phenylethynylphthalic anhydride?
4-Phenylethynylphthalic anhydride has molecular formula C16H8O3 and molecular weight 248.233 g/mol.
Which suppliers offer 4-Phenylethynylphthalic anhydride?
1 supplier(s) listed; request a quote for pricing.
What are the upstream and downstream products of 4-Phenylethynylphthalic anhydride?
For 4-Phenylethynylphthalic anhydride, Upstream Products: 4-PHENYLETHYNYLPHTHALIC DIMETHYL ESTER, 4-Bromophthalic anhydride, Phenylacetylene.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Phenylethynylphthalic anhydride (CAS 119389-05-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-732-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.