Molybdenum: Understanding This Key Element
Around 1779, the Swedish chemist Carl W. Scheele noticed that a soft black mineral was often confused with graphite and galena—what we now call molybdenite (MoS₂). In 1778 he had already determined that this mineral was neither lead nor graphite but a sulfur-bearing ore of a “new metal.” ...
危险品化学品经营许可证（带存储）