4-Chloromethylbenzoic acid CAS Number: 1642-81-5
Pharmaceutical Materials 2025-03-03
Molecular Formula: C8H7ClO2
Molecular Weight: 170.59 g/mol
Appearance: White powder
Melting Point: 201-202°C
Boiling Point: 317.7°C at 760 mmHg
Flash Point: 145.9°C
Density: Not specified but predictable
Usage: It is widely used as an intermediate in the synthesis of organic compounds and chemicals.
4-Chloromethylbenzoic acid, with the CAS number 1642-81-5, is a significant chemical compound utilized predominantly as an intermediate in the pharmaceutical and dye industries. This aromatic carboxylic acid features a chloromethyl group substituted on the benzene ring, imparting unique reactivity and properties. It exists as needle-like crystals, exhibiting solubility in ethers, hot ethanol, and hot water. The compound is typically prepared through a two-step process involving oxidation of p-xylene followed by chlorination.
| Property Category | Specific Property |
|---|---|
| Physical Properties | |
| Molecular Formula | C8H7ClO2 |
| Molecular Weight | 170.59 g/mol |
| Appearance | Needle-like crystals |
| Melting Point | 201-205 °C |
| Boiling Point | 317.7 ± 25.0 °C at 760 mmHg |
| Density | 1.3 ± 0.1 g/cm³ |
| Solubility | Soluble in ethers, hot ethanol, and hot water |
| Chemical Properties | |
| Refractive Index | 1.577 |
| Flash Point | 145.9 ± 23.2 °C |
| Stability | Stable under normal conditions, avoid contact with oxides, moisture, and bases |
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