455830

Ammonium hydrogen difluoride

99.999% trace metals basis

• Sinonimo/i: Ammonium bifluoride, Etching powder
• Formula condensata: NH₄HF₂
• Numero CAS: 1341-49-7
• Peso molecolare: 57.04
• Numero CE: 215-676-4
• Numero MDL: MFCD00012018
• Codice UNSPSC: 12352302
• eCl@ss: 38050109
• ID PubChem: 24869086
• NACRES: NA.23

Proprietà

• Grado: for analytical purposes
• Livello qualitativo: 100
• Saggio: 99.999% trace metals basis
• Stato: crystalline
• Impurezze: ≤15.0 ppm Trace Metal Analysis
• Punto di fusione: 125 °C (lit.)
• Stringa SMILE: N.F.F
• InChI: 1S/2FH.H3N/h2*1H;1H3; KVBCYCWRDBDGBG-UHFFFAOYSA-N

Descrizione

Descrizione generale

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.

Applicazioni

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

Informazioni sulla sicurezza

• Pittogrammi: GHS06,GHS05
• Avvertenze: Danger
• Indicazioni di pericolo: H301,H314
• Consigli di prudenza: P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 - P363
• Classi di pericolo: Acute Tox. 3 Oral - Eye Dam. 1 - Skin Corr. 1B
• Codice della classe di stoccaggio: 6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
• Classe di pericolosità dell'acqua (WGK): WGK 1
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable
• Dispositivi di protezione individuale: Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges