CAS number：109-65-9
molecular formula：C4H9Br
molecular weight：137.02
EINECS number：203-691-9

English synonyms

N-BUTYL BROMIDE;BUTYL BROMIDE;1-Brombutan;1-bromo-butan;1-BROMOBUTANE;1-BroMobutane, Reagent;1-BroMobutane, 98+%, 98+%;1-bromobutane/ butyl bromide

Related categories

Organic solvents;Organic building blocks;Halogenated hydrocarbons;Organic bromides;Gas chromatography standards (color scale);Organic synthesis;Biochemical reagents;Organic chemical raw materials;Other biochemical reagents;Intermediates;PharmaceuticalIntermediates;Organics;Alkanes;Organic raw materials; Halides; Pesticide Intermediates; Other Fungicides; Fungicide Intermediates; Alkane; Standards; Analytical Standards; Chemical Products-Organic Chemicals; Organic Intermediates; Fluorides; Alkyl; Catalyst Corrosion Inhibitors; Chemicals; ALKYLBROMIDE; Bromine Compounds; AlkylBromides; Monofunctional&alpha, omega-BifunctionalAlkanes;

Introduction

Bromobutane is an important fine chemical product, mainly used as an alkylating agent in organic synthesis; it is an intermediate of the fungicides dimethylphenol and pyrimethamine; the organic phosphine compound tributylphosphine, phase transfer Catalyst and Surfactant Tetra-n-butylammonium bromide. It is also used as a solvent, an extractant for rare elements, as a raw material for the synthesis of pesticides, medicines, dyes, and spices, and as a refrigerant and solvent.

Chemical properties

This product is colorless, transparent and aromatic liquid, m.p.-112℃, b.p.100～104℃, n20D 1.4390, relative density 1.276, f.p.75℉(23℃), insoluble in water, soluble in organic compounds such as alcohol, ether and chloroform solvent.

Use

●  1-Bromobutane is an intermediate between the fungicides dimethylphenol and pyrimethamine.

●  It is used in the synthesis of the anesthetic tetracaine hydrochloride, and in the production of dyes and fragrances.

●  It can be used as a rare element extraction agent, an alkylating agent and a raw material for organic synthesis. It can also be used as a raw material for medicine, dyes and spices.

●  It is used as extractant for rare elements, alkylating agent and raw material for organic synthesis. It can also be used as a raw material for medicine, dyes and spices. It is used as an intermediate for medicine, dyes and pesticides. and spices.

Production method

●  It is obtained by reacting n-butanol with bromine in the presence of red phosphorus; or by reacting n-butanol with hydrobromic acid in the presence of sulfuric acid. n-Butanol is mixed with hydrobromic acid, sulfuric acid is added dropwise, heated under reflux for 1.5 hours, distilled to obtain crude bromobutane, washed with water to pH 6-7, and dehydrated with anhydrous calcium chloride.

●  The preparation method is as follows: stirring n-butanol, sodium bromide, water and sulfuric acid evenly, heating under reflux for 3 hours, steaming out crude bromobutane, washing with water, treating with cold concentrated sulfuric acid, and performing distillation to obtain the finished product. Reaction equation: CH3CH2CH2CH2OH+NaBr+H2SO4→CH3CH2CH2CH2Br+Na2SO4+H2O

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