Appearance: White powder to grey/black crystals ; Grey crystals or black lumps with characteristic odour
HCl – Chlorane, Hydrogen chloride
Other names: Hydrochloric acid, M, Uriatic acidHydronium chloride, Chlorhydric Acid, Hydrochloric acid gas, HCl, Anhydrous hydrogen chloride, Hydrochloric acid, anhydrous, Aqueous hydrogen chloride, [Note: Often used in an aqueous solution.]
Appearance: Colorless, transparent liquid, fumes in air if concentrated ; Colorless gas ; Colourless compressed liquefied gas with pungent odour ; Colorless to slightly yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.]
Products:
C2H2 – Acetylene, Ethyne
Other names: Ethine, HC#CH, [CH(CH)]CH#CH, Vinylene, C2H2, Acetylen, Narcylen, [Note: A compressed gas used in the welding & cutting of metals.]
Appearance: Colorless gas ; Colourless gas dissolved in acetone under pressure ; Colorless gas with a faint, ethereal odor. [Note: Commercial grade has a garlic-like odor. Shipped under pressure dissolved in acetone.]