455830

Ammonium hydrogen difluoride

99.999% trace metals basis

• Synonyme(s) : Ammonium bifluoride, Etching powder
• Formule linéaire : NH₄HF₂
• Numéro CAS: 1341-49-7
• Poids moléculaire : 57.04
• Numéro CE : 215-676-4
• Numéro MDL: MFCD00012018
• Code UNSPSC : 12352302
• eCl@ss : 38050109
• ID de substance PubChem : 24869086
• Nomenclature NACRES : NA.23

Propriétés

• Pureté: 99.999% trace metals basis
• Forme: crystalline
• Impuretés: ≤15.0 ppm Trace Metal Analysis
• Pf: 125 °C (lit.)
• Chaîne SMILES: N.F.F
• InChI: 1S/2FH.H3N/h2*1H;1H3
• Clé InChI: KVBCYCWRDBDGBG-UHFFFAOYSA-N

Description

Description générale

Ammonium hydrogen difluoride is a white crystalline solid commonly used as an etchant, especially in the semiconductor industry. It has excellent selectivity in etching silicon oxides and metal silicides, making it useful in the manufacturing of semiconductors and microelectronic devices. It can also be used as a fluorinating agent.

Application

Used for the preparation of ammonium aminosilylfluorides and complex metal fluorides. Employed in a new hydrothermal synthesis of complex flourides NaHoF₄ and NaEuF₄; these interesting compounds have the fluorite structure and are important for solid-state lasers as well as for photoluminescence and magnetic characteristics

Informations sur la sécurité

• Pictogrammes: GHS06,GHS05
• Mention d'avertissement: Danger
• Mentions de danger: H301,H314
• Conseils de prudence: P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 - P363
• Classification des risques: Acute Tox. 3 Oral - Eye Dam. 1 - Skin Corr. 1B
• Code de la classe de stockage: 6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable
• Équipement de protection individuelle: Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges