environ. |
phosphorus A nonmetallic element used to manufacture phosphoric acid, in phosphor bronzes, incendiaries, pyrotechnics, matches, and rat poisons; the white or yellow allotrope is a soft waxy solid, soluble in carbon disulfide, insoluble in water and alcohol, and is poisonous and self-igniting in air; the red allotrope is an amorphous powder, insoluble in all solvents and is nonpoisonous; the black allotrope comprises lustrous crystals similar to graphite, and is insoluble in most solvents (用于制造磷酸的非金属元素,在磷青铜、燃烧弹、烟火制造、比赛和鼠毒物中存在;呈白色或黄色(同素异构体),是一种软的、蜡状的固体,可溶解于二硫化碳,不能溶于水和酒精,有毒性,可在空气中自燃;红色同素异构体是一种无定形的粉末,不能溶于任何溶剂并且是无毒性的;黑同素异构体包括发光泽的水晶,与石墨相似,并且不能溶于大多数溶剂。) |