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Benzyl Chloride

CAS Number:100‑44‑7

Synonyms:Benzyl chloride; α‑Chlorotoluene; Chloromethylbenzene

Chemical Formula:C₇H₇Cl

Molecular Weight: 126.58 g/mol

Product Introduction

A colorless to slightly yellow lachrymatory liquid with a pungent odor. A reactive electrophile used for benzylation, synthesis of benzyl esters, benzyl ethers, and quaternary ammonium salts .

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Physical & Chemical Properties

Property	Value
Appearance	Colorless to pale-yellow liquid
Odor	Pungent, lachrymatory
Density @ 25 °C	~1.10 g/mL
Melting Point	~–39 °C
Boiling Point	~179 °C
Vapor Pressure @ 20 °C	~1 mm Hg
Refractive Index	~1.5415
Flash Point	~67 °C (CC)
NFPA (H-F-R)	3‑2‑1

Applications

Benzylation reagent:for protecting alcohols/amines, quaternary salts
Synthetic intermediate:benzyl esters, phenylacetic acid, plasticizers, surfactants

Safety & Handling

Highly toxic and irritating (lachrymator), probable carcinogen (IARC 2A). OSHA PEL: 1 ppm; acute toxicity (oral LD₅₀ ~440 mg/kg). Use PPE, fume hood, gas monitoring; store sealed, cool, in dark. Keep away from acids, metals, oxidizers; incompatible with water.