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Mucochloric acid

Also known as: 3,4-Dichloro-5-hydroxy-2(5H)-furanone, 2,3-Dichloro-4-oxo-2-butenoic acid, (Z)-2,3-Dichloro-4-oxo-2-butenoic acid, (2Z)-2,3-Dichloro-4-oxo-2-butenoic acid, 2,3-Dichloro-4-oxobut-2-enoic acid, Dichloromalealdehyde acid, 3,4-Dichloro-5-hydroxyfuran-2(5H)-one, aldehydodichloromaleicacid

Mucochloric acid (CAS 87-56-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H2Cl2O3 and a molecular weight of 168.963 g/mol. Key properties include a melting point of 125-128 °C(lit.), a boiling point of 271.0±40.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 117.7±27.3 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed, H314 — Causes severe skin burns and eye damage and H317 — May cause an allergic skin reaction. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
87-56-9
Jingsj CID
J-1331169-8
Molecular Formula
C4H2Cl2O3
Molecular Weight
168.963 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point125-128 °C(lit.)
Boiling Point271.0±40.0 °C at 760 mmHg
Density1.6±0.1 g/cm3
Flash Point117.7±27.3 °C
Exact Mass167.938095
PSA54.37000
LogP0.19
Vapor Pressure0.0±1.2 mmHg at 25°C
Refractive Index1.532
Additional PropertySOLUBLE IN HOT WATER

GHS Safety & Compliance

Corrosion / Acute ToxicitySignal word: Danger
  • H301 — Toxic if swallowed
  • H314 — Causes severe skin burns and eye damage
  • H317 — May cause an allergic skin reaction

Customs & Trade Information

HS Code29183000

Frequently Asked Questions

What is the CAS number of Mucochloric acid?

The CAS number of Mucochloric acid is 87-56-9.

What are the molecular formula and molecular weight of Mucochloric acid?

Mucochloric acid has molecular formula C4H2Cl2O3 and molecular weight 168.963 g/mol.

Is Mucochloric acid hazardous?

Mucochloric acid has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H314 — Causes severe skin burns and eye damage; H317 — May cause an allergic skin reaction.

What are the upstream and downstream products of Mucochloric acid?

For Mucochloric acid, Upstream Products: Furfural, 2-Furoic acid, 3,4-Dichloro-2(5H)-furanone; Downstream Products: 2-Amino-5-chloropyrimidine, 4,5-Dichloro-2-methyl-3(2H)-pyridazinone, 4,5-Dichloro-3(2H)-pyridazinone.

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

Last updated:

How to cite: Jingsj. "Mucochloric acid (CAS 87-56-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1331169-8 (accessed 2026-11-09).

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