Home | Daivat LifeSciences

Benzoyl Chloride

CAS Number: 98‑88‑4

Synonyms: Benzoyl chloride; Benzoic acid chloride; α‑Chlorobenzaldehyde; Benzenecarbonyl chloride

Chemical Formula:C₇H₅ClO

Product Introduction

Colorless to slightly yellow, fuming liquid with a sharp, pungent odor. It’s a reactive acyl chloride used extensively in acylation (e.g., benzoylation), and as a precursor for benzoyl peroxide, benzophenones, dyes, fragrance chemicals, pharmaceuticals, and resins

Get Quote

Physical & Chemical Properties

Property	Value
Appearance	Colorless to pale yellow liquid (fuming in moist air)
Density @ 20 °C	1.21 g/cm³
Melting Point	~–1 °C
Boiling Point	~197–198 °C @ 101 kPa
Flash Point	~72 °C (HFP)
Vapor Pressure @ 20 °C	≈1 mm Hg (≈0.13 kPa)
Refractive Index (n₂₀ᴅ)	~1.553–1.554
Solubility	Reacts with water, alcohols, amines; soluble in ethers, chloroform
Molecular Weight	140.57 g/mol

Applications

Acylation reagent:Used to benzoylate alcohols, phenols, amines via Schotten–Baumann reactions.
Intermediate:Precursor to benzoyl peroxide (initiator), benzophenones, dyes, fragrances, pharmaceuticals.
Specialty uses:Employed in resin production, photographic chemicals, and was even historically used as a tear-inducing agent.