455830

Ammonium hydrogen difluoride

99.999% trace metals basis

• Sinônimo(s): Ammonium bifluoride, Etching powder
• Fórmula linear: NH₄HF₂
• Número CAS: 1341-49-7
• Peso molecular: 57.04
• Número CE: 215-676-4
• Número MDL: MFCD00012018
• Código UNSPSC: 12352302
• eCl@ss: 38050109
• ID de substância PubChem: 24869086
• NACRES: NA.23

Propriedades

• Nível de qualidade: 100
• Ensaio: 99.999% trace metals basis
• forma: crystalline
• Impurezas: ≤15.0 ppm Trace Metal Analysis
• pf: 125 °C (lit.)
• cadeia de caracteres SMILES: N.F.F
• InChI: 1S/2FH.H3N/h2*1H;1H3
• chave InChI: KVBCYCWRDBDGBG-UHFFFAOYSA-N

Descrição

Descrição geral

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.

Aplicação

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

Informações de segurança

• Pictogramas: GHS06,GHS05
• Palavra indicadora: Danger
• Frases de perigo: H301,H314
• Declarações de precaução: P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 - P363
• Classificações de perigo: Acute Tox. 3 Oral - Eye Dam. 1 - Skin Corr. 1B
• Código de classe de armazenamento: 6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
• Classe de risco de água (WGK): WGK 1
• Ponto de fulgor (°F): Not applicable
• Ponto de fulgor (°C): Not applicable
• Equipamento de proteção individual: Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges