Mucochloric acid
Agrochemicals 2025-03-02
Mucochloric Acid
Chemical Name: (Z)-2,3-Dichloro-4-oxo-2-butenoic acid
Synonyms: 3,4-Dichloro-5-hydroxy-2(5H)-furanone; Dichloromalealdehydic acid
CAS Number: 87-56-9
Molecular Formula: C₄H₂Cl₂O₃
Molecular Weight: 168.96 g/mol
Physical & Chemical Properties
| Property | Value |
|---|---|
| Appearance | Yellow to brown crystalline powder |
| Melting Point | 125-127°C (decomposes) |
| Solubility | Soluble in hot water, ethanol, ether |
| pKa | ~1.5 (strong organic acid) |
| Stability | Hygroscopic; decomposes in light |
Hazard & Safety Information (GHS)
Danger Symbols:
☠️ Toxic (T)
⚠️ Corrosive (C)
Hazard Codes:
• H302: Harmful if swallowed
• H314: Causes severe skin burns/eye damage
• H317: May cause allergic skin reaction
• H411: Toxic to aquatic life
Protective Measures:
• P280: Wear gloves/face protection
• P301+P330+P331: IF SWALLOWED: Rinse mouth, do NOT induce vomiting
• P305+P351+P338: Eye contact: Rinse cautiously
Chemical Behavior
• Reacts with bases → salts
• Forms anhydride at high temps
• Light-sensitive (store in amber bottles)
• Decomposes to release HCl gas when heated
Applications
✔ Intermediate for pharmaceuticals
✔ Synthesis of heterocyclic compounds
✔ Laboratory reagent
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