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如何区分萘丸与樟脑制品。去年５月，国家经贸委和卫生部联合发出萘丸（卫生球）有害、停止产销的通知、萘丸与樟脑制品虽都是白色挥发性晶体，但两者有质的区别。①气味上：萘丸具有强烈煤焦油气味；纯樟脑制品具有较强的清香味和清凉感。②用水按比重法测定：萘丸比水重...
How to distinguish between naphthalene pills and camphor products. In May last year, the State Economic and Trade Commission and the Ministry of Health jointly issued a naphtha pill (sanitary ball) that was harmful and stopped production and sales. Naphthol and camphor products were white volatile crystals, but the two were qualitatively different. 1 Odor: Naphthalene pellets have a strong coal tar odor; pure camphor products have a strong fragrance and refreshing sensation. 2 water by specific gravity method: naphthalene pill is heavier than water...