Isonicotinic anhydride
异烟酸酐
Also known as: 4-Pyridinecarboxylic acid anhydride, Bis(4-pyridinecarboxylic)anhydride, pyridine-4-carbonyl pyridine-4-carboxylate, NSC 139658, MFCD00062784
Isonicotinic anhydride (CAS 7082-71-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C12H8N2O3 and a molecular weight of 228.20400 g/mol. It is also known as 4-Pyridinecarboxylic acid anhydride, Bis(4-pyridinecarboxylic)anhydride and pyridine-4-carbonyl pyridine-4-carboxylate. Key properties include a melting point of 133ºC, a boiling point of 412.3ºC at 760 mmHg, a density of 1.317g/cm3 and a flash point of 203.1ºC. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 7082-71-5
- Jingsj CID
- J-27387-7
- Molecular Formula
- C12H8N2O3
- Chinese Name
- 异烟酸酐
- Molecular Weight
- 228.20400 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 133ºC |
|---|---|
| Boiling Point | 412.3ºC at 760 mmHg |
| Density | 1.317g/cm3 |
| Flash Point | 203.1ºC |
| Exact Mass | 228.05300 |
| PSA | 69.15000 |
| LogP | 1.47380 |
| Appearance | Crystalline Powder | Off-white to beige-brownish |
| Refractive Index | 1.599 |
| Storage Conditions | 2-8°C |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2933399090 |
|---|---|
| Summary | 2933399090. other compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure. 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 Isonicotinic anhydride?
The CAS number of Isonicotinic anhydride is 7082-71-5.
What are the molecular formula and molecular weight of Isonicotinic anhydride?
Isonicotinic anhydride has molecular formula C12H8N2O3 and molecular weight 228.20400 g/mol.
Is Isonicotinic anhydride hazardous?
Isonicotinic anhydride has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of Isonicotinic anhydride?
For Isonicotinic anhydride, Upstream Products: Isonicotinic acid, Isonicotinoyl chloride; Downstream Products: Isonicotinamide.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Isonicotinic anhydride (CAS 7082-71-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-27387-7 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.