2-Chloro-5-methylnicotinic acid
Also known as: 2-Chloro-5-methylpyridine-3-carboxylic acid, 2-Chloro-5-methyl-3-pyridinecarboxylic acid, 3-Pyridinecarboxylic acid, 2-chloro-5-methyl-, 2-Chloro-5-methylnicotinic acid, 2-Chloro-5-methylpyridin-3-ylcarboxylic acid
2-Chloro-5-methylnicotinic acid (CAS 66909-30-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H6ClNO2 and a molecular weight of 171.581 g/mol. Key properties include a melting point of 49-50°C, a boiling point of 331.2±37.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 154.1±26.5 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 66909-30-6
- Jingsj CID
- J-1500114-6
- Molecular Formula
- C7H6ClNO2
- Molecular Weight
- 171.581 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 49-50°C |
|---|---|
| Boiling Point | 331.2±37.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 154.1±26.5 °C |
| Exact Mass | 171.008713 |
| PSA | 50.19000 |
| LogP | 0.83 |
| Vapor Pressure | 0.0±0.8 mmHg at 25°C |
| Refractive Index | 1.579 |
| Storage Conditions | 2-8°C |
GHS Safety & Compliance
- H302 — Harmful if swallowed
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 2-Chloro-5-methylnicotinic acid?
The CAS number of 2-Chloro-5-methylnicotinic acid is 66909-30-6.
What are the molecular formula and molecular weight of 2-Chloro-5-methylnicotinic acid?
2-Chloro-5-methylnicotinic acid has molecular formula C7H6ClNO2 and molecular weight 171.581 g/mol.
Is 2-Chloro-5-methylnicotinic acid hazardous?
2-Chloro-5-methylnicotinic acid has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.
What are the upstream and downstream products of 2-Chloro-5-methylnicotinic acid?
For 2-Chloro-5-methylnicotinic acid, Upstream Products: Methyl 2-chloro-5-methylnicotinate, Carbon dioxide, 2-Chloro-5-methylpyridine; Downstream Products: Methyl 2-chloro-5-methylnicotinate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2-Chloro-5-methylnicotinic acid (CAS 66909-30-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1500114-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.