3,4-Dichloro-1,2,5-thiadiazole
We are a manufacturer based in China, specializing in high-quality 3,4-Dichloro-1,2,5-thiadiazole for industrial clients worldwide. Technical support and custom formulation available.
Category：Pharmaceutical Materials | Brand：MT
Introduction
CAS Number: 5728-20-1
Molecular Formula: C2Cl2N2S
Molecular Weight: 155.01 g/mol
Appearance: Colorless transparent liquid
Melting Point: 82-83 °C
Boiling Point: 158 °C
Density: 1.648 g/mL (or 1.737 g/cm³)
Usage: Intermediate for cardiovascular drugs such as timolol.
| Property | Details |
|---|---|
| Chemical Name | 3.4-Dichloro-1.2.5-thiadiazole |
| Synonyms | DCTD; 4.5-Dichloro-2.1.3-thiadiazole; 3.4-Dichlor-1.2.5-Thiadiazol |
| CAS Number | 5728-20-1 |
| EINECS Number | 227-232-7 |
| Molecular Formula | C₂Cl₂N₂S |
| Molecular Weight | 155.01 g/mol |
| Physical State | Colorless to pale yellow liquid |
| Melting Point | 82–83 °C |
| Boiling Point | 158 °C (101.32 kPa) |
| Density | 1.648 g/cm³ (25 °C) |
| Solubility | Insoluble in water; soluble in organic solvents like ethanol, DMF |
| Applications | – Pharmaceuticals: Key intermediate in synthesizing β-blockers (e.g., Timolol). – Agrochemicals: Used in herbicides and pesticides. – Materials Science: Employed in organic electronics and polymers. |
| Health & Safety | – Toxicity: Irritant to eyes, skin, and respiratory system. – Handling: Requires proper ventilation and protective gear. – Regulatory Compliance: Classified as a hazardous material (UN2810) under transport regulations. |
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