Citrazinic acid
Also known as: 2,6-Dihydroxyisonicotinic acid, 2,6-Dihydroxypyridine-4-carboxylic acid, 2,6-Dihydroxy-4-pyridinecarboxylic acid, 1,2-Dihydro-6-hydroxy-2-oxo-4-pyridinecarboxylic acid, 6-Hydroxy-2-oxo-1,2-dihydropyridine-4-carboxylic acid, 2,6-Dihydroxy-4-pyridinecarboxylic acid
Citrazinic acid (CAS 99-11-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H5NO4 and a molecular weight of 155.11 g/mol. Key properties include a melting point of >300 °C(lit.), a boiling point of 630.3±55.0 °C at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 335.0±31.5 °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.
- 99-11-6
- Jingsj CID
- J-45441-1
- Molecular Formula
- C6H5NO4
- Molecular Weight
- 155.11 g/mol
- Category
- Organic Acids
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | >300 °C(lit.) |
|---|---|
| Boiling Point | 630.3±55.0 °C at 760 mmHg |
| Density | 1.7±0.1 g/cm3 |
| Flash Point | 335.0±31.5 °C |
| Exact Mass | 155.021851 |
| PSA | 90.65000 |
| LogP | -1.50 |
| Vapor Pressure | 0.0±1.9 mmHg at 25°C |
| Refractive Index | 1.686 |
| Additional Property | practically insoluble |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Activity & Biological Data
| Additional Information | [1]. Stagi L, et al. Anomalous Optical Properties of Citrazinic Acid under Extreme pH Conditions. ACS Omega. 2020 May 5;5(19):10958-10964. |
|---|
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 Citrazinic acid?
The CAS number of Citrazinic acid is 99-11-6.
What are the molecular formula and molecular weight of Citrazinic acid?
Citrazinic acid has molecular formula C6H5NO4 and molecular weight 155.11 g/mol.
Is Citrazinic acid hazardous?
Citrazinic 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 Citrazinic acid?
For Citrazinic acid, Upstream Products: Isonicotinic acid, 2-hydroxypropane-1,2,3-tricarboxamide, 2,6-Dichloropyridine-4-carboxylic acid; Downstream Products: 2,6-Dimethylisonicotinonitrile, 4-Pyridinemethanol, tert-Butyl (2,6-dichloropyridin-4-yl)carbamate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Citrazinic acid (CAS 99-11-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-45441-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.