455830

Ammonium hydrogen difluoride

99.999% trace metals basis

• 동의어(들): Ammonium bifluoride, Etching powder
• Linear Formula: NH₄HF₂
• CAS Number: 1341-49-7
• Molecular Weight: 57.04
• EC Number: 215-676-4
• MDL number: MFCD00012018
• UNSPSC 코드: 12352302
• eCl@ss: 38050109
• PubChem Substance ID: 24869086
• NACRES: NA.23

속성

• 분석: 99.999% trace metals basis
• 형태: crystalline
• 불순물: ≤15.0 ppm Trace Metal Analysis
• mp: 125 °C (lit.)
• SMILES string: N.F.F
• InChI: 1S/2FH.H3N/h2*1H;1H3
• InChI key: KVBCYCWRDBDGBG-UHFFFAOYSA-N

설명

일반 설명

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.

애플리케이션

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

안전성 정보

• 픽토그램: GHS06,GHS05
• 신호어: Danger
• 유해 및 위험 성명서: H301,H314
• 예방조치 성명서: P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 - P363
• Hazard Classifications: Acute Tox. 3 Oral - Eye Dam. 1 - Skin Corr. 1B
• Storage Class Code: 6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
• WGK: WGK 1
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable
• 개인 보호 장비: Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges