Hydrogen Chloride HCl CAS No.: 7647-01-0 EINECS No.: 231-595-7 UN No.: UN1050 Purity: 99.9%, 99.999% Dot Class: 2.3 Appearance: Colorless Grade Standard: Electronic Grade, Refrigerant Grade Material: Most hydrogen chloride is used in the production of hydrochloric acid. It is also an important reagent in other industrial chemical transformations. Semiconductor: In the semiconductor industry, it is used to both etch semiconductor crystals and to purify silicon via trichlorosilane (SiHCl3). Laboratory: In the laboratory, anhydrous forms of the gas are particularly useful for generating chloride-based Lewis acids, which must be absolutely dry for their Lewis sites to function. - -
