1-bromopropane having low acidity

Abstract

The present invention provides a method comprising, mixing at least one phenol with a 1-bromopropane product mixture to form a phenol-containing 1-bromopropane product mixture, and obtaining the phenol-containing 1-bromopropane product mixture The purified 1-bromopropane product is recovered from the mixture. The present invention also provides a process for the preparation of a 1-bromopropane product mixture from 1-propanol and hydrogen bromide, characterized in that at least one phenol is mixed with the 1-bromopropane product mixture to form a A 1-bromopropane product mixture of phenol, and a purified 1-bromopropane product recovered from the phenol-containing 1-bromopropane product mixture.

Description

technical field

[0001] The present invention relates to 1-bromopropane products having a reduced tendency to form acids during storage, and to methods of producing such products. Background technique

[0002] 1-Bromopropane (also known as n-propyl bromide or propyl bromide) can be used as a degreasing agent, especially for degreasing metal parts, and in cleaning solutions in circuit board production. In these applications, the presence of certain impurities in the 1-bromopropane is undesirable because these impurities have detrimental effects on the substrate with which the 1-bromopropane comes into contact. At the time of manufacture, the starting 1-bromopropane product mixture contained impurities including 2-bromopropane (isopropyl bromide), 1,2-dibromopropane, monobromoethylketone, 1-propanol, propionaldehyde, One or more of propionic acid, water and hydrogen bromide (HBr). Some of these impurities degrade over time to produce acids such as HBr and propionic acid. The...

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