Sulfur burps are burps that have a rotten egg smell. They occur when you have too much hydrogen sulfide gas in your digestive tract. Infrequent sulfur burps are typically harmless. They may be the ...

一般使用2到4倍量即可。 Table2.Cleavage of Ethers with BBr3.S(CH3)2Complex a) Reaction run at 83°C. b) GLC yield. C) Isoated yield. General Procedure for the Cleavage of Ethers with Boron Trihalide-Methyl ...

School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China ...

Boron is an extremely valuable mineral and it is used in many products from cookware and medicine to nuclear waste storage and space exploration. Boron compounds are mainly used in borosilicate glass ...

Hydrogen sulfide is used in the manufacture of pulp and paper (digesting agent), in tanneries and in sulfide ores. Most man made hydrogen sulfide is produced as a by-product of industry, rather than ...