Study on the reaction of new reagent3 - p - methylphenylazo - 4 , 5 - dihydroxyl - 2 , 7 - naphthalene disulfonic acid with strontium and its application 萘二磺酸与锶显色反应的研究及其应用
Aromatic rings can be joined at a pair of adjacent carbons to yield compounds such as naphthalene , anthracene and chrysene < uk >芳环能在一对相邻碳上结合,生成萘、葸和等化合物。 < / uk >
Color reaction of 2 - 4 - chloro - 2 - phosphophenylazo - 7 - 2 , 4 - dichlorophenylazo - 1 , 8 - dihydroxy - 3 , 6 - naphthalene sulfonic acid with bismuth and its application 萘二磺酸与铋的显色反应研究及应用
In the summer , many people would put camphor or naphthalene balls in the cabinet to keep the insects out of the clothes 夏天的时候,许多人把樟脑或臭丸(卫生球)放入衣柜里,以防上昆虫的蛀蚀。
Therefore , using camphor is safer than using naphthalene balls . but of course , camphor is more expansive than naphthalene balls 因此,使用樟脑比使用臭丸更为安全。但价钱方面,樟脑比臭丸较贵。
Coal chemical producer in china , offering metallurgical and foundry coke , benzene and derivatives , naphthalene , asphalt , and anthracene oil -生产氯乙酸,对氨基苯乙酮,氯乙酸母液,盐酸等,包括公司简介产品介绍等
Producer of chemicals derived from coal tar , located in china . products include derivatives of naphthalene , anthracene , phenanthrene , and fluorene -生产销售乙醛酸乙二醛醇脂- 12草酸等有机化工品,包括公司简介产品介绍等
Soil quality - gas chromatographic determination of the content of volatile aromatic hydrocarbons , naphthalene and volatile halogenated hydrocarbons - purge - and - trap method with thermal desorption iso 15009 : 2002 土壤质量.挥发性芳烃萘和挥发性卤代烃含量的气相色