Ammonium Fluoride(NH4F)
FORMULA: NH4F Molecular weight: 37.04
H.S Code: 2826.1100 CAS No.: 125125-01-8
Properties:
White needle crystal. Easy to moisture absorption. Soluble in cold water, slightly soluble in alcohol. Heat decomposition for ammonia and currently. In hot water into ammonia and ammonium currently. Its become acidic aqueous solution. Can corrode glass. The relative density of 1.015. Toxic, half of the lethal dose (rats, celiac) 32 mG/kG. Corrosive.
Usage:
Usage:
Used as glass, metal surface etching agent of chemical polishing agent, disinfectant, antiseptic, the wine of fiber, and can also be used to extract mordant rare elements, etc. [ preparation or the source ] with ammonia and then by hydrofluoric acid concentration crystal or [ mixed and ammonium sulfate and carefully heating. [ other ] ChaoXie easily, can rise. Aqueous ammonia evaporation in coming to become acidic.
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mp
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98°C
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bp
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65°C/760mmHg
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density
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1.11 g/mL at 20 °C
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storage temp.
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Store at RT.
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solubility
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H2O: 1 M at 20 °C, clear, colorless
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Water Solubility
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soluble
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Sensitive
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Hygroscopic
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Merck
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14,522
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Stability:
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Stable. Incompatible with strong oxidizing agents, water, most common metals, strong bases, strong acids. Attacks glass.
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CAS Data Base Reference
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12125-01-8(CAS Data Base Reference)
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EPA Substance Registry System
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Ammonium fluoride ((NH4)F)(12125-01-8)
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Specification:
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Item
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Excellent grade
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Grade I
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NH4F,%,≥
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96.0
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96.0
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Loss on Drying,%,≤
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1.5
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3.0
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Burning residua,%,≤
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0.1
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0.2
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Sulfate (as SO4ˉ) ,%≤
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0.1
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0.1
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(NH4)2SiF6,%, ≤
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0.6
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1.0
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