Pharmaceutical Materials

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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