Dichloroacetic acid
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Category：Agrochemicals Own Brand：MT /MOQ:100KG /From China/ B2B only.
Introduction
Dichloroacetic Acid (DCA)
Chemical Name: Dichloroacetic acid
Synonyms: DCA; Dichloroethanoic acid
CAS Number: 79-43-6
Molecular Formula: C₂H₂Cl₂O₂
Molecular Weight: 128.94 g/mol
Physical & Chemical Properties
| Property | Value |
|---|---|
| Appearance | Colorless to light yellow liquid |
| Odor | Pungent, acrid |
| Melting Point | 9-11°C (48-52°F) |
| Boiling Point | 194°C (381°F) |
| Density | 1.563 g/cm³ (25°C) |
| pKa | 1.35 (strong acid) |
| Solubility | Miscible with water, ethanol, ether |
| Vapor Pressure | 0.08 mmHg (20°C) |
| Refractive Index | 1.465 (20°C) |
Hazard & Safety Information (GHS)
Danger Symbols:
☠️ Corrosive (C)
⚠️ Health Hazard
Hazard Codes:
• H314: Causes severe skin burns and eye damage
• H335: May cause respiratory irritation
• H411: Toxic to aquatic life with long-lasting effects
Protective Measures:
• P280: Wear gloves/eye protection/face protection
• P303+P361+P353: IF ON SKIN: Rinse immediately
• P305+P351+P338: IF IN EYES: Rinse cautiously
Handling & Storage
• Store in corrosion-resistant containers (glass/PTFE)
• Keep in cool, well-ventilated area away from bases
• Handle with chemical-resistant gloves (nitrile/neoprene)
• Use fume hood for concentrated solutions
Chemical Behavior
• Stronger acid than acetic acid (pKa 1.35 vs 4.76)
• Reacts violently with bases, oxidizing agents
• Decomposes at high temps → phosgene, HCl
• Hygroscopic (absorbs moisture from air)
Applications
✔ Pharmaceutical intermediate
✔ Chemical peeling agent (dermatology)
✔ Laboratory reagent
✔ Former use in wastewater treatment
Disclaimer:
The above content is for reference and communication only among industry insiders, and does not guarantee its accuracy or completeness. According to relevant laws and regulations and the regulations of this website, units or individuals who purchase related items should obtain valid qualifications and qualification conditions.
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