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Buffered Oxide Etchants

Ammonium Fluoride Etching Mixture (17567)

AFW 68-20(48)-12 MOS Puranal

General Information

  • Grade
    • SemEG

Physical Properties

  • Boiling Point/Range
    • > 100 °C (1,013 hPa)
  • Color
    • Colorless
  • Density
    • 1.110 g/cm3 (20 °C)
  • Flashpoint
    • Not applicable
  • Melting Point/Range
    • No data available
  • Odor
    • Odorless
  • pH
    • Acidic
  • Physical Form
    • Liquid
  • Solubility in Water
    • Completely miscible

Safety Information

  • Chemical Stability
    • Stable under normal conditions.
  • Corrosivity
    • Corrosive to metals
  • Ignition Temperature
    • Not applicable
  • Incompatible Materials
    • Corrosive in contact with metals, Contact with strong acids liberates hydrogen fluoride, Glass and silicate-containing materials are attacked
  • Thermal Decomposition
    • No decomposition if used as directed.

International Transportation

  • Chemical Class
    • 8
  • Harmonized System Code
    • 38249996
  • Packing Group
    • II
  • UN Number
    • 3264

General Information

  • Grade
    • SemEG

Physical Properties

  • Boiling Point/Range
    • > 100 °C (1,013 hPa)
  • Color
    • Colorless
  • Density
    • 1.110 g/cm3 (20 °C)
  • Flashpoint
    • Not applicable
  • Melting Point/Range
    • No data available
  • Odor
    • Odorless
  • pH
    • Acidic
  • Physical Form
    • Liquid
  • Solubility in Water
    • Completely miscible

Safety Information

  • Chemical Stability
    • Stable under normal conditions.
  • Corrosivity
    • Corrosive to metals
  • Ignition Temperature
    • Not applicable
  • Incompatible Materials
    • Corrosive in contact with metals, Contact with strong acids liberates hydrogen fluoride, Glass and silicate-containing materials are attacked
  • Thermal Decomposition
    • No decomposition if used as directed.

International Transportation

  • Chemical Class
    • 8
  • Harmonized System Code
    • 38249996
  • Packing Group
    • II
  • UN Number
    • 3264
  • Grade : SemEG
  • Melting Point/Range : No data available
  • Solubility in Water : Completely miscible
  • Boiling Point/Range : > 100 °C (1,013 hPa)
  • Color : Colorless
  • Physical Form : Liquid
  • Flashpoint : Not applicable
  • Density : 1.110 g/cm3 (20 °C)
  • pH : Acidic
  • Odor : Odorless
  • Thermal Decomposition : No decomposition if used as directed.
  • Ignition Temperature : Not applicable
  • Incompatible Materials : Corrosive in contact with metals, Contact with strong acids liberates hydrogen fluoride, Glass and silicate-containing materials are attacked
  • Corrosivity : Corrosive to metals
  • Chemical Stability : Stable under normal conditions.
  • Chemical Class : 8
  • UN Number : 3264
  • Harmonized System Code : 38249996
  • Packing Group : II
Property
Value
particlecl.acc.to NAS 1638
Max. 2
ammonium fluoride (NH4F)
26.4 - 28.4 %
assay hydrofluoric acid (HF)
9.3 - 10.3 %
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