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Buffered Oxide Etchants

Ammonium Fluoride Etching Mixture (17995)

AEW 33-33-33-Puranal (AMS 5)

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Physical Properties

  • pH
    • Acidic
  • Odor
    • Vinegar-Like
  • Melting Point/Range
    • No data available
  • Color
    • Colorless
  • Flashpoint
    • Not applicable
  • Physical Form
    • Liquid
  • Boiling Point/Range
    • > 100 °C (1,013 hPa)

Safety Information

  • Corrosivity
    • Corrosive to metals
  • Chemical Stability
    • Stable under normal conditions.
  • Incompatible Materials
    • Glass and silicate-containing materials are attacked, Contact with strong acids liberates hydrogen fluoride, Corrosive in contact with metal
  • Ignition Temperature
    • Not applicable

International Transportation

  • Packing Group
    • II
  • Chemical Class
    • 8
  • UN Number
    • 1760
  • Harmonized System Code
    • 38249996

Physical Properties

  • pH
    • Acidic
  • Odor
    • Vinegar-Like
  • Melting Point/Range
    • No data available
  • Color
    • Colorless
  • Flashpoint
    • Not applicable
  • Physical Form
    • Liquid
  • Boiling Point/Range
    • > 100 °C (1,013 hPa)

Safety Information

  • Corrosivity
    • Corrosive to metals
  • Chemical Stability
    • Stable under normal conditions.
  • Incompatible Materials
    • Glass and silicate-containing materials are attacked, Contact with strong acids liberates hydrogen fluoride, Corrosive in contact with metal
  • Ignition Temperature
    • Not applicable

International Transportation

  • Packing Group
    • II
  • Chemical Class
    • 8
  • UN Number
    • 1760
  • Harmonized System Code
    • 38249996
  • pH : Acidic
  • Odor : Vinegar-Like
  • Melting Point/Range : No data available
  • Color : Colorless
  • Flashpoint : Not applicable
  • Physical Form : Liquid
  • Boiling Point/Range : > 100 °C (1,013 hPa)
  • Corrosivity : Corrosive to metals
  • Chemical Stability : Stable under normal conditions.
  • Incompatible Materials : Glass and silicate-containing materials are attacked, Contact with strong acids liberates hydrogen fluoride, Corrosive in contact with metal
  • Ignition Temperature : Not applicable
  • Packing Group : II
  • Chemical Class : 8
  • UN Number : 1760
  • Harmonized System Code : 38249996
Property
Value
ammonium fluoride (NH4F)
13.0 - 15.0 %
acetic acid (CH3COOH)
32.2 - 34.2 %
residue on ignition (SO4)
Max. 20 ppm
arsenic (As)
Max. 0.1 ppm
calcium (Ca)
Max. 0.5 ppm
cadmium (Cd)
Max. 0.1 ppm
cobalt (Co)
Max. 0.1 ppm
copper (Cu)
Max. 0.1 ppm
iron (Fe)
Max. 1 ppm
potassium (K)
Max. 0.1 ppm
lithium (Li)
Max. 0.1 ppm
magnesium (Mg)
Max. 0.2 ppm
manganese (Mn)
Max. 0.1 ppm
sodium (Na)
Max. 0.5 ppm
nickel (Ni)
Max. 0.1 ppm
lead (Pb)
Max. 0.1 ppm
strontium (Sr)
Max. 0.1 ppm
zinc (Zn)
Max. 0.1 ppm
chloride (Cl)
Max. 4 ppm
phosphate (PO4)
Max. 1 ppm
sulfate (SO4)
Max. 5 ppm