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Fluorwasserstoffsäure R-R 50% CZ 500ml Glutenfreie Produkte Environmental research: Use in sampleHydrofluoric Acid 50% pct. Technical information about chemical reagents: Chemical formula: HF CAS number: 7664 39 3 EC number: 231 634 8 Synonyms: Hydrogen fluoride, Hydrofluoric acid Species: pure Purity: 50. 0 1. 0%. Examples of professional applications in various industries: Glass industry: Etching, frosting and cleaning of glass surfaces and removal of silica deposits. Metal processing: Surface preparation for soldering, etching of metals and