3,5-Dichloroisonicotinic acid

Also known as: 3,5-Dichloro-4-pyridinecarboxylic acid, 3,5-Dichloropyridine-4-carboxylic acid, 4-Pyridinecarboxylic acid, 3,5-dichloro-, dichloroisonicotinic acid, 3,5-Dichloroisonicotinic acid, MFCD01861975, TIMTEC-BB SBB003624, RARECHEM AL BE 0919

3,5-Dichloroisonicotinic acid (CAS 13958-93-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H3Cl2NO2 and a molecular weight of 191.999 g/mol. Key properties include a melting point of 230 °C (dec.)(lit.), a boiling point of 383.0±37.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 185.4±26.5 °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 Aug 21, 2026.

CAS No.: 13958-93-5
Jingsj CID: J-1477049-1
Molecular Formula: C₆H₃Cl₂NO₂
Molecular Weight: 191.999 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	230 °C (dec.)(lit.)
Boiling Point	383.0±37.0 °C at 760 mmHg
Density	1.6±0.1 g/cm3
Flash Point	185.4±26.5 °C
Exact Mass	190.954086
PSA	50.19000
LogP	1.34
Vapor Pressure	0.0±0.9 mmHg at 25°C
Refractive Index	1.606

GHS Safety & Compliance

IrritantSignal word: Warning

H315 — Causes skin irritation
H319 — Causes serious eye irritation
H335 — May cause respiratory irritation

Frequently Asked Questions

What is the CAS number of 3,5-Dichloroisonicotinic acid?

The CAS number of 3,5-Dichloroisonicotinic acid is 13958-93-5.

What are the molecular formula and molecular weight of 3,5-Dichloroisonicotinic acid?

3,5-Dichloroisonicotinic acid has molecular formula C6H3Cl2NO2 and molecular weight 191.999 g/mol.

Is 3,5-Dichloroisonicotinic acid hazardous?

3,5-Dichloroisonicotinic 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 3,5-Dichloroisonicotinic acid?

For 3,5-Dichloroisonicotinic acid, Upstream Products: Carbon dioxide, 3,5-Dichloropyridine, Dichloromethane; Downstream Products: 3,5-Dichloro-4-(chloromethyl)pyridine, 3,5-Dichloropyridine, 3,5-Dichloroisonicotinamide.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "3,5-Dichloroisonicotinic acid (CAS 13958-93-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1477049-1 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.