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3,6-Dichloropyridazine-4-carboxylic acid

Also known as: 3,6-Dichloro-4-pyridazinecarboxylic acid, 4-Carboxy-3,6-dichloropyridazine, 4-Pyridazinecarboxylic acid, 3,6-dichloro-

3,6-Dichloropyridazine-4-carboxylic acid (CAS 51149-08-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C5H2Cl2N2O2 and a molecular weight of 192.988 g/mol. Key properties include a melting point of 142 °C (dec.)(lit.), a boiling point of 424.8±40.0 °C at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 210.7±27.3 °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.
51149-08-7
Jingsj CID
J-7521-8
Molecular Formula
C5H2Cl2N2O2
Molecular Weight
192.988 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point142 °C (dec.)(lit.)
Boiling Point424.8±40.0 °C at 760 mmHg
Density1.7±0.1 g/cm3
Flash Point210.7±27.3 °C
Exact Mass191.949326
PSA63.08000
LogP1.04
Vapor Pressure0.0±1.1 mmHg at 25°C
Refractive Index1.614

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Customs & Trade Information

HS Code2933990090
Summary2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. 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 3,6-Dichloropyridazine-4-carboxylic acid?

The CAS number of 3,6-Dichloropyridazine-4-carboxylic acid is 51149-08-7.

What are the molecular formula and molecular weight of 3,6-Dichloropyridazine-4-carboxylic acid?

3,6-Dichloropyridazine-4-carboxylic acid has molecular formula C5H2Cl2N2O2 and molecular weight 192.988 g/mol.

Is 3,6-Dichloropyridazine-4-carboxylic acid hazardous?

3,6-Dichloropyridazine-4-carboxylic 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 3,6-Dichloropyridazine-4-carboxylic acid?

For 3,6-Dichloropyridazine-4-carboxylic acid, Upstream Products: 3,6-Dichloro-4-methylpyridazine, Citraconic anhydride, 4-Methylpyridazine-3,6-diol; Downstream Products: 6-Chloro-3-hydroxypyridazine-4-carboxylic acid, methyl 3,6-dichloropyridazine-4-carboxylate, Ethyl 3,6-dichloropyridazine-4-carboxylate.

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

Last updated:

How to cite: Jingsj. "3,6-Dichloropyridazine-4-carboxylic acid (CAS 51149-08-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-7521-8 (accessed 2026-11-09).

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