Pyridine-3,5-dicarboxylic acid
Also known as: Dinicotinic acid, 3,5-Pyridinedicarboxylic acid, 5-Carboxynicotinic acid, 3,5-Pyridinedicarboxylate, 5-Pyridinedicarboxylic acid
Pyridine-3,5-dicarboxylic acid (CAS 499-81-0) 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 167.12 g/mol. Key properties include a melting point of >300 °C(lit.), a boiling point of 463.7±30.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 234.3±24.6 °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 Nov 3, 2026.
- CAS No.
- 499-81-0
- Jingsj CID
- J-18634-5
- Molecular Formula
- C7H5NO4
- Molecular Weight
- 167.12 g/mol
- Category
- Pharma Intermediates
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | >300 °C(lit.) |
|---|---|
| Boiling Point | 463.7±30.0 °C at 760 mmHg |
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 234.3±24.6 °C |
| Exact Mass | 167.021851 |
| PSA | 87.49000 |
| LogP | -0.34 |
| Vapor Pressure | 0.0±1.2 mmHg at 25°C |
| Refractive Index | 1.628 |
| Additional Property | insoluble |
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 Pyridine-3,5-dicarboxylic acid?
The CAS number of Pyridine-3,5-dicarboxylic acid is 499-81-0.
What are the molecular formula and molecular weight of Pyridine-3,5-dicarboxylic acid?
Pyridine-3,5-dicarboxylic acid has molecular formula C7H5NO4 and molecular weight 167.12 g/mol.
Is Pyridine-3,5-dicarboxylic acid hazardous?
Pyridine-3,5-dicarboxylic 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 Pyridine-3,5-dicarboxylic acid?
For Pyridine-3,5-dicarboxylic acid, Upstream Products: 3,5-Dimethylpyridine, Nicotinic acid, iodomethane; Downstream Products: Methyl 5-aminonicotinate, 5-((tert-Butoxycarbonyl)amino)nicotinic acid, 3,5-Bis(chloromethyl)pyridine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Pyridine-3,5-dicarboxylic acid (CAS 499-81-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-18634-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.