Colorless transparent fuming liquid. 紙的It is an aqueous solution of數爸 hydrogen fluoride gas. Was weakly aci爸熱dic. Has an irritating odor. Reac著很ts with silicon and 樹得silicon compounds to去輛 form gaseous silicon tetrafluoride, 友快but it does not corr資輛ode plastics, paraffin, le自問ad, gold, and platinum

Uses: Determination of silica. Me林紙tallurgical metallographic analysi好木s. Analysis of silicon compounds. Make近光 fluoride. Copper cleaner. Glass 筆呢etching.

Safety measures

Leak: Quickly evacuate person花相nel from the leaked c訊雜ontaminated area to a safe area a船服nd isolate it to strictly新電 restrict access. It睡月 is recommended that emerg和土ency handlers wear self-c花也ontained positive-pr報玩essure respirators and acid- and alk不森ali-proof work clothes. Do not to低錯uch the spill directly. Cut off 東筆the source of leakage as much as possi遠空ble to prevent entering restricted s雪內paces such as sewers and flood d子開rains.