Background and overview[1]
Boron trifluoride methanol complex is an adduct formed by the three silicone coating additives boron fluoride and methanol. It is often used as a boron trifluoride methanol solution. Boron trifluoride is a suffocating, irritating, odorless, colorless gas that produces white smoke in the atmosphere. Boron trifluoride is soluble in cold water and concentrated sulfuric acid, and reacts with water to form monohydrate or dihydrate. Boron trifluoride is one of the strongest Lewis acids and can combine with hydrogen fluoride, ammonia, ethers, alcohols, amines, phosphines, etc. to form adducts.
Apply[2-3]
Application 1,
CN201410244115.5 discloses a synthesis method of fluorine-containing polyether polyol, which uses boron trifluoride methanol and ethylene glycol as the initiator system, and adopts a living controlled polymerization method to synthesize fluorine-containing polyether with controllable molecular weight. Polyol. The synthesis method of the fluorine-containing polyether polyol of the present invention is effective. Since the synthesis process uses boron trifluoride methanol and ethylene glycol as the initiating system, the cationic polymerization reaction rate is reduced, reflecting the characteristics of living polymerization, and effectively controlling Molecular weight of fluoropolyether polyols.
Application 2,
CN201910289634.6 discloses a rapid detection method that can simultaneously measure fatty acids and squalene in vegetable oil. It includes the following steps: prepare a sample, weigh the sample, add sodium hydroxide methanol solution, reflux in a water bath, until the oil When the drops disappear, cool to room temperature, add boron trifluoride methanol solution, boil, cool to room temperature, add n-heptane, boil, cool to room temperature, add saturated sodium chloride solution, let it stand, absorb the supernatant, and add an appropriate amount of sodium chloride solution. Prepare a sample using sodium sulfate in water; prepare a standard working solution; perform instrumental analysis of the sample. Analyze and detect the sample of step (1) using gas chromatography to obtain a sample chromatogram to detect fatty acids and silane squalene; qualitative analysis of the sample Quantitative analysis. The detection method of the present invention does not need to be limited to the content of free fatty acids in vegetable oils and fats, and has a wide range of applications. It can be used for rapid detection of batches of vegetable oils and fats samples, and will greatly improve the detection efficiency of the two types of nutrients, fatty acids and squalene in vegetable oils and fats. .
References
[1] Dictionary of Inorganic Compounds
[2]CN201410244115.5 Synthesis method of fluorine-containing polyether polyol
[3]CN201910289634.6 Rapid detection method of fatty acids and squalene in vegetable oils
