Safety in use of alkalis in science experiments 使用浓硫酸的安全措施使用硷的安全措施
Method : the polysaccharide was extracted by phenol - sulphoacid method 方法采用苯酚浓硫酸法提取多糖。
An accident involving splash of concentrated sulphuric acid onto the eyes 一宗涉及浓硫酸溅入眼睛的意外
Study on decomposition mechanism of rare earth concentrate by concentrated sulfuric acid 包头稀土精矿浓硫酸焙烧反应机理研究
Production of manganous sulfate by curing process with pyrite , pyrolusite and concentrated sulfuric acid 两矿加浓硫酸熟化法生产硫酸锰
Producing of manganese sulfate by using two minerals ripened by sulfate acid iron pyrite and manganeseore 硫铁矿和锰矿浓硫酸熟化法生产硫酸锰
The russian telilong - concentrated sulfuric - acid circulation technique of cleaning for russian - made supercritical once - through boilers 加浓硫酸循环工艺法清洗俄制超临界直流锅炉
Yellow - brown powder . it is insoluble in water . it is soluble in sodium sulfide solution with a yellow - orange colour , slightly soluble in concentrated sulfuric acid 黄棕色均匀粉末,不溶于水，溶于硫化钠溶液中呈黄光橙色，微溶于浓硫酸。
The test solution is placed in a test tube , and a small amount of alpha - naphthol added ; concentrated sulfuric acid is then trickled slowly down the side of the tube 在试管中放入待检测的溶液，加入少量的萘酚，接着把浓硫酸沿着试管壁缓缓滴入试管。
N - cyclohexylmaleimide was synthesized by dehydration and ring closure of n - cyclohexylmalemic acid in the presence of a catalyst consisting of a mixture of sulfuric acid and triethylamine 摘要用浓硫酸和三乙胺共催化环己基马来酰胺酸脱水关环合成环己基马来酰亚胺。
