Purification method for high-purity organic solvent normal propyl alcohol

A technology of organic solvent and purification method, applied in the field of purification of high-purity organic solvent n-propanol, can solve the problems of difficult removal, no published patent documents, low amount of impurities, etc., to reduce energy consumption, save manpower, and operate stably Effect
CN102746115AInactive Publication Date: 2012-10-24天津康科德医药化工有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
天津康科德医药化工有限公司
Publication Date
2012-10-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a purification method for high-purity organic solvent normal propyl alcohol. The method includes steps: subjecting raw normal propyl alcohol to removal of high ultraviolet absorption impurities by the aid of activated carbon, utilizing desiccants such as anhydrous calcium sulfate or calcium hydride for drying and dehydration, rectifying, filtering and packaging to obtain the high-purity organic solvent normal propyl alcohol. By the purification method for the high-purity organic solvent normal propyl alcohol, chromatographic-grade normal propyl alcohol products with the purity higher than 99.8% can be obtained, the yield is higher than 95%, the acceptance rate is higher than 93%, and application requirements of users in aspects of scientific researches, subject studies and the like of the high-purity organic solvent (HPLC) normal propyl alcohol can be met. In addition, compared with conventional methods, the purification method for the high-purity organic solvent normal propyl alcohol is high in product purity, simple and convenient to operate and stable in product quality and can be used for large-scale production.
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Description

technical field

[0001] The invention belongs to the technical field of chemical industry and relates to a method for purifying an organic solvent, in particular to a method for purifying a high-purity organic solvent n-propanol. Background technique

[0002] N-propanol is mainly used as a solvent and cleaning agent for vegetable oils, natural rubber, resins and cellulose, as a raw material in organic synthesis, as a standard in chromatographic analysis and as a high-purity reagent in scientific research experiments. The conventional n-propanol reagent has a n-propanol content of about 99.1%, and the main impurities are water and allyl alcohol. This kind of n-propanol cannot meet the needs of users of high-purity organic solvent n-propanol, and must be further purified so that its various technical indicators reach the standards of chromatographic grade before it can be used.

[0003] At present, there are few domestic reports on the purification methods of chromatographic n...

Claims

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