1-Bromobutane CAS 109-65-9
Factory Supply 1-Bromobutane CAS 109-65-9 with Best Price
- Appearance: Colorless liquid
- Assay: 99. 0%min
- Stock: In stock
- Sample: Available
- Zhishang Chemical: 1-Bromobutane Supplement
1-Bromobutane: The Complete Guide
Index of 1-Bromobutane Contents
1-Bromobutane for Sale
Basic Info of 1-Bromobutane
Bromobutane; butyl bromide; 1 bromo butane; N-BUTYL BROMIDE; 1-bromo-butan
Pesticide intermediates; Pharmaceutical raw materials; Organic raw materials
What is 1-Bromobutane?
1-Bromobutane is a natural bromine substance with the chemical formula CH3 (CH2) 3Br. It is a colorless fluid, although the unclean example is light yellow. It is generally utilized as a resource of butyl in organic synthesis.
1-Bromobutane is inappropriate with solid bases and also oxidants.
Bromobutane, also known as 1-bromobutane, is an important fine chemical product, mainly used as an alkylating agent in organic synthesis; Intermediate; organophosphine compound tributylphosphine, phase transfer catalyst and surfactant tetra-n-butylammonium bromide. It is also used as a solvent, an extractant for rare elements, a raw material for the synthesis of pesticides, medicines, dyes, and spices, and as a refrigerant and solvent.
- 1-Bromobutane is made use of as an alkylating representative and also in the prep work of organometallic substances, such as n-butyl lithium.
- 1-Bromobutane reacts with magnesium to prepare Grignard reagent, which is made use of to form carbon bond.
- 1-Bromobutane can be utilized as a derivative reagent of multiple practical teams (amino, carboxyl and phenolic hydroxyl) of amino acids to enhance the hydrophobicity and also alkalinity of amino acids. It can likewise be used as an internal criterion for the metrology of 1 – as well as 2-bromopropane in human urine by headspace gas chromatography.
- 1-Bromobutane is an intermediate in between the fungicides dimethylphenol and pyrimethamine.
- 1-Bromobutane is utilized as a rare component extraction representative, an alkylating representative and also a basic material for natural synthesis, and also can likewise be made use of as a raw material for medication, dyes and scents.
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Application of 1-Bromobutane
Butyl-terminated allyl polyoxyethylene ether has oil solubility, high temperature resistance, acid and alkali resistance, foam suppression, etc. All have improved capabilities and have unique features. Butyl-terminated allyl polyoxyethylene ether can be used not only in the oil for high-speed spinning of chemical fibers, but also as an additive in high-temperature-resistant lubricating oil or heat-conducting oil; it can also be used in strongly alkaline detergent formulations In addition, it is an excellent cell opener and silicone foam stabilizer in the polyurethane industry.
CN200910102019.6 provides a method for preparing butyl-terminated allyl polyoxyethylene ether. During the reaction process, water is removed as a by-product, so as to promote the sufficient reaction of polyether and alkali to generate alkoxide. The alkoxide and bromobutane are fully reacted in the autoclave to obtain the corresponding end-capped polyether, which has the advantages of fast reaction speed, no pollution and high end-capping efficiency.
In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme. As an alkoxide reagent, react with allyl polyoxyethylene ether to generate allyl polyoxyethylene alkoxide, and then react with bromobutane as an end capping agent to prepare butyl end capped allyl polyoxyethylene ether ; The alkoxide reagent adopts any one of solid potassium hydroxide or sodium hydroxide or a mixture thereof; and the molar ratio of allyl polyoxyethylene ether to the alkoxide reagent is 1: 1 to 1.5. In the present invention, bromobutane is reasonably selected as the end-capping agent, and the utilization rate is high.
Preparation of 1-Bromobutane
The existing synthesis technology of bromobutane mainly includes n-butanol and sodium bromide sulfuric acid method, n-butanol and hydrobromic acid sulfuric acid method, n-butanol and hydrobromic acid solid acid catalysis method, n-butanol and bromine sulfurization method. and so on.
Hydrobromic acid and n-butanol react in the presence of a catalyst to produce 1-bromobutane. Since hydrobromic acid is a by-product of mass production of aryl bromide flame retardants, it is economically reasonable and has been a research hotspot in recent years. Sulfuric acid as a catalyst will produce a large amount of dilute sulfuric acid in the production process, and the post-processing is relatively troublesome; the solid acid catalysis method is easily affected by the failure of the catalyst, resulting in unstable product yield, and the complex synthesis and regeneration process of the catalyst affects the promotion of this process.
Chinese invention patent CN102826954 discloses a “preparation method of bromoalkane”, which is mixed according to the molar ratio of n-butanol and hydrobromic acid of 1:5, heated to a reflux state, and continuously and uniformly added dropwise and the gas outlet speed is adjusted to make the liquid The amount of dripping and the amount of steaming out are corresponding to keep the kettle liquid stable.
However, this method has a long reaction time, needs 6-12 hours, and has a large amount of hydrobromic acid and a low utilization rate.