3,4-Pyridinedicarboxylic acid
Also known as: Cinchomeronic acid, Pyridine-3,4-dicarboxylic acid, 3,4-dicarboxypyridine, Chinchomeronic acid
3,4-Pyridinedicarboxylic acid (CAS 490-11-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H5NO4 and a molecular weight of 167.119 g/mol. Key properties include a melting point of 262 °C (dec.)(lit.), a boiling point of 528.8±35.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 273.6±25.9 °C. 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.
- 490-11-9
- Jingsj CID
- J-11570-4
- Molecular Formula
- C7H5NO4
- Molecular Weight
- 167.119 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 262 °C (dec.)(lit.) |
|---|---|
| Boiling Point | 528.8±35.0 °C at 760 mmHg |
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 273.6±25.9 °C |
| Exact Mass | 167.021851 |
| PSA | 87.49000 |
| LogP | -0.80 |
| Vapor Pressure | 0.0±1.5 mmHg at 25°C |
| Refractive Index | 1.628 |
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 3,4-Pyridinedicarboxylic acid?
The CAS number of 3,4-Pyridinedicarboxylic acid is 490-11-9.
What are the molecular formula and molecular weight of 3,4-Pyridinedicarboxylic acid?
3,4-Pyridinedicarboxylic acid has molecular formula C7H5NO4 and molecular weight 167.119 g/mol.
Is 3,4-Pyridinedicarboxylic acid hazardous?
3,4-Pyridinedicarboxylic acid 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 3,4-Pyridinedicarboxylic acid?
For 3,4-Pyridinedicarboxylic acid, Upstream Products: Nicotinic acid, Carbon dioxide, Isonicotinic acid; Downstream Products: Nicotinic acid, Isonicotinic acid, Nicotinamide.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3,4-Pyridinedicarboxylic acid (CAS 490-11-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-11570-4 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.